2003 & BEYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICAL Overview

Transcription

1 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Overview ORGNIZTION The Light Duty C/K Full Size Trucks went through a major electrical system change in This change was called a Mid Cycle Enhancement. This document will be updated only to reflect a major subsystem change until the next platform major electrical redesign. This document is believed to be correct until the next platform major design change. This document is organized as follows: Systems Operation How it works Component Locator Where it is Connectors & Pinouts What it looks like, and finally, Subsystem Schematics Detailed wiring and electrical schematic information. WHT S NEW FOR THE LIGHT DUTY C/K FULL SIZE TRUCKS MNUL Detailed System Operation Instructions are provided for PTO and Fast Idle operation. lso included is information on Trailer Wiring, Exterior Lighting and the Passlock interface. This section has been expanded to have diagrams integral to the text rather than reference a separate section for graphics. Component Locator Pages have been included to show the location of major electronic modules on both the Pickup / Cabchassis and the Utility vehicle. n cronym an bbreviation list used in the Electrical Component Legend, Ground Zone, and Electrical Schematic sections is included. Connector Detail and Location Illustrations are provided for many interfaces. Terminal, Cable Seal, and mating connector information have been added where appropriate. Detailed Electrical Schematics are provided for most subsystems. New LLY 6.6L engine information is added for diesel engines sold after 1/01/04. See LLY ECM Connector and Location Drawings, Engine Controls, and Transmission Schematics. The LLY 6.6L engine ECM is new for The connectors changed from a 3-way to a 2-way. Connector pin-outs and location are included in the connector section. Schematics for the ECM and affected subsystems are not included in this document. n expanded LED Turn Signal page is included in the pplication Notes. SPECIL INTEREST TO UPFITTERS MID EC provides a convenient in-cab location for interfacing with the vehicle & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 (continued on next page)

2 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (Overview continued from previous page) Navigation The Table of Contents and Index items are linked to the actual page. Click on the item of interest and you ll go to the corresponding page. You can return with the previous page arrow in the upper center of the screen. Other links embedded in the document are hi-lighted in blue. Viewing The size (%) control is located in the lower left corner of the screen. Click the down arrow and select fit in window (62%) or actual size (100%) for most viewing applications. You can zoom in schematic detail by selecting a larger percentage. Printing Specific pages can be printed out. e careful to select a print range or current page or all 315 pages will try to print out. Information provided is believed to be accurate at the time of publication. GM reserves the right to change the information at any time & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

3 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Index PGE i SYSTEM OPERTION INSTRUCTIONS Power Take Off (PTO) / Fast Idle...-1 OUTLINE PTO Overview PTO Information...-2 C. PTO Preset Mode (Factory Default Setting)...-6 D. PTO Variable Mode...-8 E. High Idle Procedure for 20HD & 30 Series Trucks with 8.1L (L18) Gas Engine...-9 F. High Idle Procedure for 20HD & 30 Series Trucks with 6.6L (L) Diesel Engine G. Fast Idle Switch Installation on 8.1L (L18) Gas Engine & 6.6L (L) Diesel Engine H. PTO Programming Guide Trailer Wiring Light Duty Trailer Wiring Heavy Duty Trailer Wiring Trailer rake Jumper Harness C/K Utility and Cab-Chassis Light Duty to Heavy Duty Trailer Wiring Conversion Way to 4-Way Trailer dapter Camper/Fifth-Wheel Trailer Wiring Exterior Lighting ROOF MOUNTED ECON / WRECKER PCKGE / EMERGENCY LIGHT Roof-Mounted eacon Lamp (RPO 5G4 & TRW) Emergency Vehicle Lamp (SEO 5X) ody uilder Emergency Lamp (SEO 5Y0)...-2 COMINED STOP / TURN TIL LMP CONVERSION Rear Chassis Wiring Harness Connector & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04

4 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL PGE ii SYSTEM OPERTION INSTRUCTIONS (Continued) SNOWPLOW PREP PCKGE (VYU) LIGHTING PROVISION Passlock Interface for Remote Start / Stop pplication Notes LED Turn Signals Remote HVC Compressor Operation ELECTRICL COMPONENT LOCTIONS Electrical Components Legend (Truck and Utility)...-1 Power Distribution Centers...-4 Underhood EC...-4 Mid EC...-8 Mid EC Location...-9 Left EC Right EC Ground Zones CONNECTOR ND PIN-OUT ILLUSTRTIONS SEO Connector in Mid EC Connector C-8...C-1 Trailer rake Control Wiring Harness Connector in Mid EC Connector C-...C-2 Upfitter Connector in Mid EC no # designation...c-3 Mid EC Connectors Location...C-4 LLY ( 04-05) Engine Control Module (ECM) Connector C-1...C-5 Connector C-2...C- Connector C-3...C-9 Location...C-11 LLY ( 06) Engine Control Module (ECM) Connector C-1...C-12 Connector C-2...C-15 Location...C-1 L Engine Control Module (ECM) Connector C-1...C & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

5 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL PGE iii CONNECTOR ND PIN-OUT ILLUSTRTIONS (Continued) L Engine Control Module (ECM) Connector C-2...C-20 Powertrain Control Module (PCM) Connector C-1...C-22 Connector C-2...C-24 Engine Control Module (ECM) / Powertrain Control Module (PCM) Location...C-26 Power Take Off (PTO) Relay Connector...C-2 Relay Location...C-28 Switch Connector...C-29 Switch Connector Location...C-30 Interface Connector...C-31 Interface Connector Location...C-32 Rear Lamps Junction lock Connector Rear Chassis Harness C-1...C-33 Junction lock Connector Left Tail Lamp C-2...C-34 Junction lock Connector License Plate C-3...C-35 Junction lock Connector Right Tail Lamp C-4...C-36 Rear Lamps Junction lock Location...C-3 Trailer Connector...C-38 Trailer Connector Location...C-39 SUSYSTEM ELECTRICL SCHEMTICS Power Distribution: Gas...D-1 Diesel...D-20 Ground Distribution...D-35 uxiliary attery...d-52 Engine Controls: L18 8.1L Gas...D-53 GEN 3 PCM...D-65 LU3 4.3L V6...D-81 L 6.6L Diesel...D-93 LLY 6.6L Diesel...D & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

6 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL PGE iv SUSYSTEM ELECTRICL SCHEMTICS (Continued) Electronic Throttle Control...D-118 Fuel Sender/Pump: Gas (03/43/53/06)...D-122 Gas (L59)...D-124 Gas (906/36)...D-125 Diesel...D-12 Power Take Off Provisions (L18/L)...D-128 LCT Transmission (L18/L/M4)...D-130 LCT Transmission (L18/LLY/M4)...D-132 Starting and Charging: Gas...D-134 Starting and Charging: Diesel-Dual Gen...D-13 Cruise Control...D-139 Serial Data: Data Link Connector (DLC)...D-140 Serial Data Link (Class II)...D-141 Instrument Panel Cluster...D-145 Headlamps: Non Z5...D-14 Z5...D-149 mbient Light / Solar Sensor...D-151 Daytime Running Lamps (Domestic/Middle East)...D-152 Front Fog Lamp...D-153 Exterior Lighting: Domestic / Middle East...D-154 Wrecker Package (SEO)...D-164 Roof Mounted eacon...d-165 Emergency Light...D-166 Wrecker Light ar SW (SEO)...D-16 ackup Lamps...D-168 Interior Lighting (Pickup)...D-10 Cargo Lamp SW (Pickup)...D & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

7 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL PGE v SUSYSTEM ELECTRICL SCHEMTICS (Continued) Dimming Control: w/o Y91...D-14 w/ Y91...D-16 Compartment Lamps...D-18 Trailer and Camper Wiring...D-19 Power Door Locks: ase (w/o DDM/PDM)...D-182 Uplevel (w/ DDM/PDM)...D-18 Theft Deterrent Content...D-191 rake Trans Shift Interlock (TSI)...D-194 Seats (Driver and Passenger)...D-195 Mobile Radio...D-205 Truck ody Computer 2.2 (TC): ase (w/o DDM/PDM)...D-206 Uplevel (w/ DDM/PDM)...D-210 Driver Door Module...D-214 Passenger Door Module...D & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

8 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL System Operating Instructions Power Take Off (PTO) OUTLINE. PTO Overview. PTO Information PTO Control Switch C. PTO Preset Mode D. PTO Variable Mode E. High Idle Procedure for 20HD & 30 Series Trucks with 8.1L (L18) Gas Engine F. High Idle Procedure for 20HD & 30 Series Trucks with 6.6L (L) Diesel Engine G. Fast Idle Switch Installation on 8.1L (L18) Gas & 6.6L (L) Diesel Engine H. PTO Programming Guide PGE & eyond Light Duty C/K Full-Size Truck Electrical

9 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Take Off (PTO). PTO OVERVIEW PGE -2 Power Take Off (PTO) provisions have been provided as standard content on the C/K 3600 Cab-Chassis trucks with the 8.1L (L18) gas engine and 6.6L Duramax Diesel (L) engine. These provisions are included in two forced RPO s, M1F and PTO. The M1F and PTO options are not available on C/K 3600 Cab-Chassis trucks with the 6.0L (LQ4) engine. M1F and PTO are not available options on C/K 20HD and 30 models. High Idle High Idle is available when a PTO device is not utilized but increased engine speed is required. The Preset and Variable Mode controls operate in the same manner as the PTO controls. Wiring provisions for in-cab PTO Control Switch is provided in most of the Light Duty Trucks with the 8.1L (L18) gas or 6.6L (L) diesel engines only. Fast Idle Fast Idle provides an elevated engine speed control to one setting. It is not to be used if any type of hydraulic application is intended. Fast Idle requires hardwiring into the powertrain control module and the use of a momentary type switch. RPO M1F Option. PTO INFORMTION RPO M1F is a forced option, on C/K 3600 trucks with L18 or L engines, which provides PTO mounting space for transmission mounted PTO s. PTO mounting space is for the right hand side of the transmission. RPO M1F includes the following: Revised Underbody Structure (RH side) Unique Front Floor Cover Panel (RH side) contoured to allow for PTO mounting. RPO PTO Option RPO PTO is a forced option, on C/K 3600 trucks with L18 or L engines, which provides engine speed and PTO engagement controls & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

10 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (. PTO INFORMTION continued from previous page) RPO PTO includes the following: PTO control software is in the Powertrain Control Module (PCM) on the gas engine and in the Engine Control Module (ECM) on the diesel engine. Wiring provisions for in-cab PTO Control Switch Upfitter PTO Interface Connector which is located at the left side of the transmission. This connector provides access to PTO engage, feedback, engine shut down circuits as well as remote access to PTO SET switch. GM pproved PTO Kits Two North merican PTO suppliers, Chelsea uxiliary Power Products and Muncie Power Products offer the PTO installation kits. The kits are designed specifically for the C/K 3600 trucks. The PTO kits in addition to normal PTO content include plumbing, heat shields, PTO control switch and PTO interface wiring harness. oth PTO suppliers offer PTO kits to accommodate both the llison 1000 automatic transmission and the ZF 6-speed manual transmission. GM recommends that these kits be used for PTO installations on the C/K 3600 Cab-Chassis. PTO ccessory Kit GM Service Parts Organization offers a PTO ccessory Kit (Part Number ) that contains the PTO control switch and PTO interface wiring harness. The PTO accessory kit is required when PTO/High Idle speed control is desired but the PTO supplier kits are not utilized. The PTO accessory kit is available from your local GM dealer. The following parts are included in the PTO ccessory Kit: PTO control switch. Instruction sheet. PTO interface wiring harness. (Includes a mating connector to the PTO Interface Connector and approximately three feet of blunt cut wires) NOTE: The PTO accessory kit can only be installed on GM Light Duty Trucks with the 8.1L (L18) gas or 6.6L (L) diesel engines. Wiring provisions for in-cab PTO Control Switch is provided in most of the Light Duty Trucks with the 8.1L (L18) gas or 6.6L (L) diesel engines only. PGE & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

11 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (. PTO INFORMTION continued from previous page) PTO Control Switch PGE -4 The PTO option includes a provision for a dash mounted PTO control switch. This switch is supplied with the Chelsea and Muncie PTO kits mentioned above or it can be purchased as part of the PTO accessory kit. The PTO control switch has three positions: OFF ON SET (spring loaded) LED Indicator PTO Control Switch Typical Installation dditional PTO control is available if the vehicle is equipped with Cruise Control. The Cruise Control stalk controls the following PTO functions: PTO SET Speed PTO RESUME Speed 2003 & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

12 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (. PTO INFORMTION continued from previous page) PTO Interface Connector PGE -5 PTO interface connector is located on a bracket attached on the left-hand side of the transmission above the left-hand side PTO opening. The PTO interface connector provides access to the following circuits for remote PTO operation: PTO Engine Shut Down (Light lue) PTO Remote Enable Switch (Light Green). Ground (lack) PTO Feedback (Yellow) PTO Relay Switch Control (White) Cruise Control SET Switch Input (Dark lue) PTO Operating Speed Control Two PTO operating speed control modes are available with the 8.1L (L18) gas and 6.6L (L) diesel engines. The PCM/ECM may be programmed to one of the following modes: Preset Up to two preset PTO operating speeds. (requires Cruise Control) Variable llows variable PTO speeds while vehicle is stationary or moving. (requires Cruise Control) PTO Engagement PTO engagement is controlled through the use of the in-cab PTO Control Switch. When PTO engagement is desired, the user selects the ON position. The PCM/ECM then activates the PTO relay, once proper operating criteria are met. The fused PTO relay feed is accessible at the PTO Interface Connector discussed above. PTO Engine Shutdown Provisions are included in the PTO Interface Connector to allow for engine shut down while in the PTO operation mode. This feature requires the installation of a normally closed ground switch that when opened will shut down the engine. This feature can only be activated with a Tech II diagnostic tool. NOTE: PTO Schematics are provided in the System Electrical Schematics section of the manual & eyond Light Duty C/K Full-Size Truck Electrical

13 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL C. PTO PRESET MODE (FCTORY DEFULT SETTING) PGE -6 PTO Preset speed control mode is used for stationary applications. This mode provides a default standby speed of 800 or 8 rpm (depending on the engine/transmission combination) and two PTO control speeds: PTO Set Speed of 12 rpm, and PTO Resume Speed of 100 rpm. Please note that the standby speed (800/8 rpm) is not to be used as a PTO control speed. Vehicles that are not equipped with cruise control will not have the resume speed capability. PROGRMMLE FCTORY SETTING MINIMUM VLUE MXIMUM VLUE PRMETERS (RPM) (RPM) (RPM) PTO Max Engine Speed 2200 L L L-9 L-3100 uto/manual Normal engine idle will PTO Standby RPM L18-800/8 override if higher than 1300 L-800/800 requested PTO base idle PTO Set Speed 12 PTO Standby Speed PTO Max Engine Speed Setting PTO Resume Speed 100 PTO Set Speed PTO Max Engine Speed Setting PTO Max Engage Speed PTO Max Engine Speed Setting PTO Preset Mode Function Chart The following chart shows how to toggle between the two PTO speeds through the Cruise SET and RES switches. PRESENT PTO STTE PRESSING RESULTING PTO STTE PTO Standby Speed SET PTO Set Speed PTO Standby Speed RES PTO Resume Speed PTO Set Speed SET PTO Standby Speed PTO Set Speed RES PTO Resume Speed PTO Resume Speed* SET PTO Set Speed PTO Resume Speed RES PTO Standby Speed *On L18 Gasoline Engines, PTO Set must be selected prior to requesting PTO Resume Speed & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

14 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (C. PTO PRESET MODE continued from previous page) PTO Engage Conditions for PTO Preset Mode To engage the PTO, the following conditions must be met. Engine must be running. Transmission must be in PRK or NEUTRL. Park rake must be set for Manual Transmission only. Vehicle speed must be zero. rake or Clutch must not be depressed. PGE - Procedure for Engaging PTO with Manual Transmission 1. Set parking brake. 2. Shift the transmission into NEUTRL (N). 3. Turn the PTO switch to the ON position. The engine speed will increase to the PTO Standby Speed. The PTO is engaged when the LED on the PTO control switch changes from blinking to steady state. 4. Press either the SET or RESUME switch on the cruise control or turn the PTO switch to the SET position. The engine speed will jump to the PTO SET or RESUME speeds. Procedure for Engaging PTO with utomatic Transmission 1. Shift the transmission into Park (P). 2. Turn the PTO switch to the ON position. The engine speed will increase to the PTO Standby Speed. The PTO is engaged when the LED on the PTO control switch changes from blinking to steady state. 3. Press either the SET or RESUME switch on the cruise control or turn the PTO switch to the SET position. The engine speed will jump to the PTO SET or RESUME speeds. Torque Converter Clutch (TCC) lockup is not available in Neutral. TCC lockup is available in Park with engine RPM above 1100 RPM. NOTE: If any input from the brake pedal or clutch pedal is detected, PTO operation will be interrupted. For L18 gasoline engine, the standby speed will be again established only after a toggle of the control switch to the SET position. For the L diesel engine, the standby speed will be established with the release of the brake pedal or clutch pedal & eyond Light Duty C/K Full-Size Truck Electrical

15 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL D. PTO VRILE MODE PGE -8 PTO variable speed control mode can be used for both stationary and mobile applications. This mode allows PTO to be controlled in a fashion similar to which cruise control controls vehicle speed. The operator is able to hold an engine RPM (between 800 and 2200) with the SET switch on the cruise stalk or the PTO switch. The operator can tap up to increase engine speed in 100 rpm increments with the RESUME switch on the cruise stalk or tap down to decrease engine speed with either SET switch (on the cruise stalk or the PTO switch). Vehicles not equipped with cruise control will not have the tap up & tap down capability. PROGRMMLE FCTORY SETTING MINIMUM VLUE MXIMUM VLUE PRMETERS (RPM) (RPM) (RPM) PTO Max Engine Speed 2200 RPM L18-6 L L L-9 L-3100 UTO/MNUL L-600 PTO Standby RPM L18-800/8 Normal engine idle will 1300 L-800/800 override if higher than requested PTO ase Idle PTO Max Engage Speed PTO Max Engine Speed PTO - Variable Mode Function Chart SWITCH SET RESUME (w/cruise Only) Engine speed will decrease by 100-RPM decrements Engine speed will increase by 100-RPM increments and will maintain new engine speed value. and will maintain new engine speed value. PRESSED ONCE Engine speed can be decreased down to PTO Engine speed can be increased up to the PTO max standby RPM speed value, all further SET inputs engine speed value, all further RESUME inputs will will be ignored be ignored HELD Decelerates engine speed down to the PTO standby Increases engine speed up to the PTO max engine PTO standby speed value. speed value 2003 & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

16 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (D. PTO VRILE MODE continued from previous page) PTO Speed Control in Variable Mode (while Mobile): PGE Vehicle speed greater than 5 mph. 2. Foot off brake pedal (and/or off clutch for manual transmission). 3. Turn the PTO switch to the ON position. The engine speed will increase to the PTO Standby Speed. The PTO is engaged when the LED on the PTO control switch changes from blinking to steady state. 4. Obtain the desired engine speed with gas pedal and pressing SET on the PTO switch or the cruise stock. 5. The SET and RESUME switches can then be used to adjust the engine speed in 100-RPM increments. Using PTO Speed Control in Variable Mode (while Stationary): 1. Vehicle speed must be zero. 2. Foot off brake pedal and/or off clutch for manual transmission. 3. Turn the PTO switch to the ON position. The engine speed will increase to the PTO Standby Speed. The PTO is engaged when the LED on the PTO control switch changes from blinking to steady state. 4. Obtain the desired engine speed with gas pedal and pressing SET on the PTO switch or the cruise stock. 5. The SET and RESUME switches can then be used to adjust the engine speed in 100-RPM increments. NOTE: If any input from the brake pedal or clutch pedal is detected, PTO operation will be interrupted. PTO Variable mode may be re-enabled by pressing the RESUME switch. Engine speed will increase to the speed prior to disabling. E. HIGH IDLE PROCEDURE FOR 20HD & 30 SERIES TRUCKS WITH 8.1L (L18) GS INE High Idle can be obtained by using the 8-pin PTO connector behind the dash and the PTO accessory kit. The PTO connector can be found behind the passenger air bag defeat switch. It should be taped to the harness directly behind the passenger air bag defeat switch. Mount the PTO switch next to the passenger air bag defeat switch. The PTO interface wiring harness included with the PTO Kit is not needed unless a requirement for remote operation is desired. Connect the Tech 2 scan tool and reprogram the Powertrain Control Module (PCM). See the PTO Programming Guide section for instructions on how to reprogram the PCM & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

17 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (E. HIGH IDLE PROCEDURE continued from previous page) Remember to program to either the Preset PTO or Variable PTO Mode when using the PTO switch. The changes that need to be made are as follows: PTO Max Engine Speed 2200 RPM PTO Standby Speed 800 RPM PTO Set Speed 12 RPM PTO Resume Speed 100 RPM PTO Max Engage Speed 1000 RPM PTO Shutdown NO PTO Engage Relay NO PTO Feedback NO NOTE: If the reprogramming of the PCM is not performed, the High Idle function will not work. PGE -10 To engage the High Idle, put the truck in PRK or NEUTRL, set the Park rake (Manual Transmission only) and turn the switch to the ON position. Move the PTO switch to the SET position or press the SET switch on the cruise control if equipped. The SET input ramps up the engine speed to 12 RPM. y pressing the cruise control RES/CC switch the engine speed will increase to the PTO resume speed setting and any SET input will decrease the engine speed to the PTO set speed setting. If the truck does not have the cruise control option, only the PTO SET speed is available. The PTO/High Idle settings can only be changed with a Tech 2 scan tool. The Tech 2 scan tool can be purchased from GM by calling GM-TOOLS. The PTO accessory kit is available from your local GM dealer. If any problems should arise, check and clear any DTC s with a Tech 2 and make sure that the brake switch and tail lamps are functioning correctly. NOTE: In certain cases the PTO wiring and connector will not be installed behind the passenger side air bag switch. If this is the case, the system will need to be hardwired into the PCM and a switch or switches (no cruise control) will need to be used. Please call the Upfitter Integration Hotline at (800) for more information & eyond Light Duty C/K Full-Size Truck Electrical

18 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL F. HIGH IDLE PROCEDURE FOR 20HD & 30 SERIES TRUCKS WITH 6.6L (L) DIESEL INE PGE -11 High Idle can be obtained by using the 8-pin PTO connector behind the dash and the PTO accessory kit. The PTO connector can be found behind the passenger air bag defeat switch. It should be taped to the harness directly behind the passenger air bag defeat switch. Mount the PTO switch next to the passenger air bag defeat switch. The PTO interface wiring harness included with the PTO Kit is not needed unless a requirement for remote operation is desired. Connect the Tech 2 scan tool and reprogram the Engine Control Module (ECM). See the PTO Programming Guide section for instructions on how to reprogram the ECM. Remember to program to either the Preset PTO or Variable PTO Mode when using the PTO switch. When the PTO settings are initially read, the Tech 2 will show values of 635 rpm. Select the change options menu and continue with the programming of the ECM. The changes that need to be made are as follows: PTO Max Engine Speed 2200 RPM PTO Standby Speed 800 RPM PTO Set Speed 12 RPM PTO Resume Speed 100 RPM PTO Max Engage Speed 1000 RPM PTO Shutdown NO PTO Engage Relay NO PTO Feedback NO NOTE: If the reprogramming of the ECM is not performed, the High Idle function will not work. To engage the High Idle, put the truck in PRK or NEUTRL, set the Park rake (Manual Transmission only) and turn the switch to the ON position. Move the PTO switch to the SET position or press the SET switch on the cruise control if equipped. The SET input ramps up the engine speed to 12 RPM. y pressing the cruise control RES/CC switch the engine speed will increase to the PTO resume speed setting and any SET input will decrease the engine speed to the PTO set speed setting. If the truck does not have the cruise control option, only the PTO SET speed is available. The PTO/High Idle settings can only be changed with a Tech 2 scan tool. The Tech 2 scan tool can be purchased from GM by calling GM-TOOLS & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

19 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (F. HIGH IDLE PROCEDURE continued from previous page) The PTO accessory kit is available from your local GM dealer. If any problems should arise, check and clear any DTC s with a Tech 2 and make sure that the brake switch and tail lamps are functioning correctly. NOTE: In certain cases the PTO wiring and connector will not be installed behind the passenger side air bag switch. If this is the case, the system will need to be hardwired into the ECM and a switch or switches (no cruise control) will need to be used. Please call the Upfitter Integration Hotline at (800) for more information. G. FST IDLE SWITCH INSTLLTION ON 8.1L (L18) GS INE & 6.6L (L) DIESEL INE NOTE: The fast idle switch input pin is available on GM trucks with the 8.1L (L18) gas & 6.6L (L) Diesel Engines. NOTE: The use of the fast idle switch is not recommended if any type of hydraulic application is intended. PGE & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

20 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (G. FST IDLE SWITCH INSTLLTION continued from previous page) Procedure for Fast Idle Operation on 8.1 Liter (L18) Gas Engine PGE Reprogram the PCM using Tech 2. See the PTO Programming Guide section for instructions on how to get to the PTO programming screen. a. Reprogram to the Fast Idle Mode by pressing the Change Options Key and selecting PTO Fast Idle Mode. b. Scroll down and change the PTO Feedback and PTO Engage Relay settings to NO. c. If more than 12 RPM is required, change the PTO Standby Speed setting. 2. Follow the schematic above and hardwire into Pin 31 of the lue connector in the PCM/ECM. a. y momentarily grounding Pin 31 the engine idle will increase to the PTO Standby Speed Setting. b. Momentarily grounding Pin 31 again will cancel the fast idle operation and return the engine to base engine idle speed. Procedure for Fast Idle Operation on 6.6 Liter (L) Duramax Diesel Engine. Reprogram the ECM using the Tech 2. To get the Fast Idle Mode to show up on the Tech 2, select the 2003 Model year and then select the Medium Duty Truck option on the next screen. If any other year besides 2003 MY is selected, the Fast Idle option will not be available to use. Select the Engine and Transmission on the vehicle. The Fast Idle option will now be available for programming. Follow the instructions from steps 1 & 2 above to complete the programming and installation of the switch. Reference UI ulletin # 63, Fast Idle Procedure for L Engine for more complete instructions. NOTE: If any problems should arise, check and clear any DTC s with a Tech 2 and make sure that the brake switch and tail lamps are functioning correctly & eyond Light Duty C/K Full-Size Truck Electrical

21 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL H. PTO PROGRMMING GUIDE PGE -14 This section provides information on the procedure for programming the PCM/ECM for with the Tech 2 service diagnostic tool. 1. Connect the Tech 2 to the vehicle. 2. Select the Diagnostics option from the Main Menu. Main Menu F0: Diagnostics F1: Service Programming System F2: View Captured Data F3: F4: 3. Select the Model Year from the Vehicle ID menu. Vehicle ID (Model Year) (3) 2003 (2) 2002 (1) 2001 (Y) & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

22 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (H. PTO PROGRMMING GUIDE continued from previous page) 4. Select the LD Truck, MPV, Incomplete option from the Vehicle Identification menu. PGE -15 Vehicle Identification Passenger Car LD Truck, MPV, Incomplete Medium Duty Truck Saturn 5. Select the Powertrain Option from the System Selection Menu. System Selection 200* LD Truck, MPV, Incomplete F0: Powertrain F1: ody F2: Chassis F3: Diagnostic Circuit Check 2003 & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

23 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (H. PTO PROGRMMING GUIDE continued from previous page) 6. Select the Engine type from the Vehicle Identification menu. Vehicle Identification Select one of the following LT Duty Truck Engine types (1) V8 L Diesel (G) V8 L18 (G) V8 L18 30HD PGE -16. Select the Transmission type from the Vehicle Identification menu. Vehicle Identification Select one of the following Transmissions 5 Speed utomatic Trans (M4) 4 Speed utomatic Trans (MT1) Manual Trans (ML6) Other 2003 & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

24 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (H. PTO PROGRMMING GUIDE continued from previous page) 8. Select the Special Functions option from the Powertrain menu. PGE -1 Powertrain F0: F1: Data Display F2: Special Functions F3: Snapshot F4: 9. Select the PTO options from the Special Functions menu Special Features F5:... F6: Service ay Test F: PTO Options F8: Engine Shutdown F9: 2003 & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

25 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (H. PTO PROGRMMING GUIDE continued from previous page) 10. The Current PTO settings screen will be displayed. Press the Change Options key and then select the desired PTO Operating Mode. Refer to pages 4-6 for PTO mode information. PGE -18 PTO Option F0: Fast Idle F1: Preset PTO Speed Control F2: Variable PTO Speed Control F3: F4: 11. Scroll through the Current PTO settings, make any necessary changes and press the reprogram options key when done to complete the programming. The values shown below are the default settings. PTO Current PTO Settings PTO Option Current PTO Settings PTO Fast Idle Option PTO Max. Engine Speed PTO Standby Speed PTO Set Speed PTO Resume Speed PTO Max. Engine Speed PTO Engine Shutdown PTO Engage Relay PTO Feedback Preset 2200 RPM 800 RPM 12 RPM 100 RPM 1000 RPM No Yes Yes PTO Fast Idle Option PTO Max. Engine Speed PTO Standby Speed PTO Max. Engine Speed PTO Engine Shutdown PTO Engage Relay PTO Feedback Fast Idle 2200 RPM 12 RPM 1000 RPM No No No 2003 & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

26 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (H. PTO PROGRMMING GUIDE continued from previous page) 12.The Current PTO settings screen will again be displayed. Make sure that the changes made are shown on this screen. If settings did not change, repeat the procedure. If settings are correct, power down the tech 2 and disconnect from the vehicle. PGE -19 PTO Current PTO Settings PTO Option Current PTO Settings PTO Fast Idle Option PTO Max. Engine Speed PTO Standby Speed PTO Set Speed PTO Resume Speed PTO Max. Engine Speed PTO Engine Shutdown PTO Engage Relay PTO Feedback Preset 2200 RPM 800 RPM 12 RPM 100 RPM 1000 RPM No No No PTO Fast Idle Option PTO Max. Engine Speed PTO Standby Speed PTO Max. Engine Speed PTO Engine Shutdown PTO Engage Relay PTO Feedback Fast Idle 2200 RPM 12 RPM 1000 RPM No No No 2003 & eyond Light Duty C/K Full-Size Truck Electrical

27 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Trailer Wiring PGE -20 C/K trucks are available with three trailer wiring configurations: Light duty trailer wiring is standard equipment on all models. The wiring consists of six blunt cut wires located at the rear of the truck Heavy duty trailering equipment package (Option Z82) includes a -way universal trailer connector that is mounted to the trailering hitch platform. This option also provides an instrument panel jumper wiring harness for electric trailer brake controller and a -way to 4-way trailer adapter Camper/Fifth Wheel trailer wiring package (Option UY2) is available on all pickups. This option provides an 8-way wiring harness that is located under the front left edge of the pickup box and added -way sealed connector for the trailer harness. Light Duty Trailer Wiring Light duty trailer wiring consists of six blunt cut wires, which are located at the rear of the vehicle and tied to the frame. The six blunt cut wires consist of the following trailer circuits: Yellow: Left Stop/Turn Signal Dark Green: Right Stop/Turn Signal rown: Tail lamps White: Ground Light Green: ackup Lamps Light lue: Center High-Mounted Stop Lamp (CHMSL) Light duty trailer wiring can be upgraded to heavy duty trailer wiring with a conversion kit, which is available from a GM dealer. Information on the conversion to heavy duty trailer wiring is covered in the following pages & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

28 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (TRILER WIRING continued from previous page) Heavy Duty Trailer Wiring PGE -21 Heavy duty trailer wiring for C/K trucks is provided with the Z82 heavy duty trailer equipment package. This package includes a -way universal trailer tow connector (part #121913), which is mounted to the trailer platform hitch. The universal trailer tow connector contains the circuits provided in the light duty trailer harness with the addition of the following circuits: Red: attery Feed (12 gauge) Dark lue: Trailer rake (12 gauge) The White ground lead is upgraded from 16 to 10 gauge wire. There is also a Lt. lue one-pin CHMSL connector provided on pickup and cab-chassis trucks. This connector is tied to the trailer harness and located just forward of the trailer connector. This connector is available for use with a trailer, slide in camper or cap & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

29 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (TRILER WIRING continued from previous page) Trailer rake Jumper Harness PGE -22 The heavy duty trailering equipment package also includes a trailer brake jumper harness (part #185418) for an electric trailer brake controller. This jumper harness consists of approximately 8 feet of blunt cut wiring attached to a 6-way connector. The jumper harness interfaces with the TRLR receptacle (C) on the Mid ussed Electrical Center (MEC). The trailer battery ring terminal on Stud #2 is fused with 30 mp Maxi-Fuse. This circuit provides power to the MEC TRLR connector inside the cab. The trailer brake jumper harness can be purchased from a GM dealer. The trailer brake jumper harness contains the following circuits: - rown: Interior Park Lamp - Red: attery (Fused to 30 mps) C - Dark lue: Trailer rake (to -way trailer connector) D - Light lue: Trailer CHMSL (rake Switch) E - Not Used F - lack: Ground With the exception of the Dark lue trailer brake circuit (pin C), these above circuits are active and available on trucks that are not equipped with the heavy duty trailer wiring. To access these circuits, the upfitter/body builder can purchase the mating connector (part # ) from Pioneer, the distributor for Packard, by calling PCKRD. The C/K trucks are shipped from the assembly plant with the trailer attery Hot lead disconnected. To provide power to the trailer hot lead, the 40 mp Maxi-Fuse must be connected at the Stud #1 location in the Underhood EC. C/K Utility and Cab-Chassis Heavy duty trailer wiring is provided on C/K Utility, Cab Chassis and pickups equipped with the Manual Selectable Ride Option (ZX3) that do not have the Z82 package or trailer platform hitch. The trailer wiring will be tied back to the rear cross member. The trailer brake jumper harness is not included with the cab chassis models and must be purchased separately from a GM Dealer & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

30 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (TRILER WIRING continued from previous page) Light Duty to Heavy Duty Trailer Wiring Conversion PGE -23 Trucks equipped with light duty trailer wiring can be upgraded to heavy duty trailer wiring. wiring conversion kit (part # ) is available and can be purchased from a GM dealer. The conversion kit consists of an underbody harness (part # ) with a -way universal trailer tow connector and instruction sheet (part # ). The Trailer rake Jumper Harness is not included in the conversion kit. -Way to 4-Way Trailer dapter -way to 4-way trailer adapter (part # ) allows trucks with the heavy duty trailer wiring to be compatible with four-way trailer connectors. The -way to 4-way trailer adapter is included with the Z82 package. The -way to 4-way trailer adapter can be purchased from a GM dealer. Camper/Fifth-Wheel Trailer Wiring The Camper/Fifth Wheel trailer wiring is available as option UY2 on 10 /20/20HD/30 series pickup trucks. It includes additional 8-way wiring harness routed to the front of pickup box and added -way sealed connector for the trailer harness. t that point, approximately four feet of blunt cut wire is available which can be extended up to a camper by routing it between the pickup box and cab. There are two holes in the front of the pickup box provided for retaining clips to retain that wiring. The Camper/Fifth-Wheel harness utilizes the same circuitry as the heavy duty trailer wiring. CMPER/FIFTH-WHEEL TRILER WIRING (If equipped) 2003 & eyond Light Duty C/K Full-Size Truck Electrical

31 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting. ROOF-MOUNTED ECONS ND EMERGENCY LMPS PGE -24 ctivation of an in-cab switch provides power for an external lamp load through a relay. Consult your owners manual supplement for installation instructions. common switch is used in all cases. LMP SWITCH Three variations are available based on power requirements and relay and wiring location. Roof-Mounted eacon Lamp 30 circuit, Interior Relay, Wiring from relay ends with lunt Cuts in roof. Emergency Vehicle Lamp 40 circuit, Exterior Relay, Upfitter provides own wiring to relay. ody uilder Emergency Lamp 30 circuit, Under Hood Relay, Wiring from relay ends with lunt Cuts in back of cab & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

32 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (. ROOF-MOUNTED ECONS continued from previous page) Roof-Mounted eacon Lamp (RPO 5G4 & TRW) PGE -25 This Regular Production Option (RPO) includes wiring provisions for a roof-mounted beacon lamp. Power is controlled through an auxiliary lamp switch located in the dash, a relay mounted in the left -Pillar and wiring which is routed up along the Left Hand -pillar that terminates at the roof as coiled blunt cut wires. There are two blunt cut wires, one is rown (roof-mounted lamp power) and the other is lack (ground). The rown power wire is protected by the 30-mp SEO 2 fuse which is located in the Underhood Electrical Center. The maximum rated electrical load is 21-mps (2 watts). The added electrical equipment must not exceed 21-mps (2 watts). Running this accessory for long periods of time with the engine off may run the battery down and cause a no-start condition. The TRW option is included with the VYU Snowplow prep package. The 5G4 option is available if the snowplow prep package is not ordered, but a beacon lamp is needed. ROOF LMP HRNESS 2003 & eyond Light Duty C/K Full-Size Truck Electrical PILLR MOUNTED RELY (continued on next page)

33 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (. ROOF-MOUNTED ECONS continued from previous page) Emergency Vehicle Lamp (SEO 5X) PGE -26 This Specialty Equipment Option (SEO) includes wiring provisions for an emergency vehicle lamp. Power is controlled through an auxiliary lamp switch located in the dash and wired to a relay. The relay is mounted underhood on the passenger side upper dash panel. Wiring is to be completed from the relay to the additional electrical equipment. The maximum rated electrical load is 40-mps (480 watts). The added electrical equipment must not exceed 40-mps (480 watts). The auxiliary lamp switch with this option will operate at all times regardless of the ignition switch position. Running this accessory for long periods of time with the engine off may run the battery down and cause a no-start condition. ROOF LMP RELY 2003 & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

34 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (. ROOF-MOUNTED ECONS continued from previous page) ody uilder Emergency Lamp (SEO 5Y0) PGE -2 This Specialty Equipment Option (SEO) includes wiring provisions for a body builder installed emergency vehicle lamp. Power is controlled through an auxiliary lamp switch located in the dash, a relay mounted on the front of the dash and wiring which is routed along the frame rail under the back of the cab. There are two blunt cut wires, one is rown (roof-mounted lamp power) and the other is lack (ground). The rown power wire is protected by the 30-mp Stud 2 fuse which is located in the Underhood Electrical Center. The maximum rated electrical load is 21-mps (2 watts). The added electrical equipment must not exceed 21-mps (2 watts). The auxiliary lamp switch with this option will operate at all times regardless of the ignition switch position. Running this accessory for long periods of time with the engine off may run the battery down and cause a no-start condition. ODY UILDER WIRING UNDERHOOD LMP RELY 2003 & eyond Light Duty C/K Full-Size Truck Electrical

35 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL. COMINED STOP/TURN TIL LMP CONVERSION PGE -28 The C/K trucks tail lamp wiring was designed for separated function Stop and Turn lamps; therefore, the tail lamp feeds from the rear junction block cannot be used directly for combination stop/turn lamps. Feeds for combined stop/turn lamps are available off of the trailer wiring harness. The Left Stop/Turn Lamp feed can be accessed from the yellow wire (circuit 1618). The Right Stop/Turn Lamp feed can be accessed from the dark green wire (circuit 1619). When using these feeds, the upfitter must consider whether the truck will be used for towing. If so, the upfitter must ensure that the loads of the truck lamps combined with the trailer stop/turn lamps do not exceed the 10mpere capacity of the fuse. Load and splicing guidelines, can be found at the Upfitter Integration website ( in the Electrical Guidelines Manual. Rear Chassis Wiring Harness Connector If the upfitter prefers to interface directly with the chassis wiring connector, thus eliminating the Rear Junction lock. n in-line mating connector is available and can be obtained by ordering part number The chassis wiring harness mating connector can be purchased from a GM dealer or through Packard/Pioneer Electric Systems (1-800-PCKRD). C. SNOWPLOW PREP PCKGE (VYU) LIGHTING PROVISIONS The forward lamp wiring harnesses have a set of mating eight cavity connectors on both the left and right sides of the vehicle. The upfitter will be able to disconnect the in-line connectors to allow interfacing with the forward lamp circuits (Front Parklamp, Turn Signal and DRL). The Headlamp circuits must be accessed from the Headlamp connectors. See the Special pplications Section - Snowplow Prep for circuit function charts, connector face diagrams and connector parts lists. backup lamp power feed is provided at the rear of the vehicle through the Trailer Harness. The 10-mp TRLR /U fuse located in the Underhood Electrical Center protects this circuit. On vehicles with Light Duty Trailer Wiring this circuit can be accessed through the green wire. On vehicles with the Heavy Duty Trailering option, this circuit is located in pin of the Trailer Connector. NOTE: See Exterior lighting schematics in the Electrical Schematics section of the ody uilders Manual & eyond Light Duty C/K Full-Size Truck Electrical

36 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Passlock Interface For Remote Start/Stop PURPOSE PGE -29 The information below outlines a procedure to disable the Passlock Theft Deterrent for C/K trucks in which remote start/stop applications are required. This procedure is required because a remote start/stop system will not function with the current Passlock Theft Deterrent on 2003 and beyond C/K trucks. Note: The following information is intended to be used only in conjunction with the installation of a remote start/stop system and does not provide a procedure to install a remote start/stop system. CUSE If an attempt is made to start a vehicle by a means other than a key rotation in the ignition switch, the Truck ody Computer (TC) will interpret this start request as a vehicle theft and disable the fuel injectors. CORRECTION minor wiring modification may be made to allow the vehicle to be started remotely. This modification includes adding a switch to allow the customer to select ON to allow remote starting or OFF for normal Passlock Theft Deterrent operation. CUTION: When this modification is performed and the switch is set to the ON position, the theft deterrent feature will be disabled. When the theft deterrent is disabled the SECURITY telltale will light up indicating that the theft deterrent system is NOT functioning. PSSLOCK MODIFICTION Refer to appropriate GM service manuals and/or Upfitter Integration Electrical Guideline Manual for instruction on splicing and electrical connections. 1. Select a suitable ON/OFF switch (see note below), which will be used to enable/disable the Passlock Theft Deterrent system. Mount the switch in a location such that it is accessible to the driver and will not interfere with normal vehicle operation. NOTE: This is an extremely low current circuit (approx. m). It is very important that a high quality, low energy, fast acting switch be utilized for this application & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

37 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (continued from previous page) 2. Turn the ignition switch to the OFF position. 3. Locate the Truck ody Computer on the lower left side of the I/P below the steering column. Refer to the illustration below to locate the TC. 4. Locate the Yellow wire, Pin 6 on the rown Connector on the TC. Cut this wire and splice a 0.5mm (20 G) yellow wire to each end of the cut wire. Keep wire length to a minimum. Route modification wires clear of moving parts. Connect the yellow wires to the switch such that the contacts are OPEN when the switch is in the ON position and CLOSED when the switch is in the OFF position. 5. Turn modification switch to the OFF position. 6. Start vehicle and verify switch operation. If engine cranks but will not start recheck the switch position, wire connectors and modification wiring. Switch should be in the OFF position. To initiate Fail Enable mode: SWITCH OPERTION Start the engine with the ignition key. Turn modification switch to the ON position. The Security Telltale will light up indicating that the Passlock Theft Deterrent is inoperative. Once the security telltale has been on for at least five seconds the vehicle can be turned off and then remotely started. To disable Fail Enable mode: The Passlock Theft Deterrent system can be re-enabled by turning the modification switch to the OFF position. Please note that the ECM/PCM (Engine Control / Powertrain Control Module) will record Diagnostic Trouble Codes (DTC s) related to the security system when the modification switch is in the ON position. This is due to the way that the ECM/PCM interprets this condition. NOTICE ny condition which removes battery power from the ECM/PCM (e.g. dead battery, disconnected harness connectors, etc.) will prevent the vehicle from being restarted. If the engine exhibits a cranks but will not start symptom, check to make sure that the modification switch is in the OFF position. Please note that the ECM/PCM will record Diagnostic Trouble Codes (DTCs) related to the security system when the modification switch is in the ON position (circuit open). This is due to the way that the ECM/PCM interprets this condition. PGE & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

38 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (continued from previous page) Truck ody Computer PGE Fuse lock - Left I/P 2. Instrument Panel 3. Truck ody Computer 4. Truck ody Computer Harness 2003 & eyond Light Duty C/K Full-Size Truck Electrical (continued on next page)

39 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (continued from previous page) Truck ody Computer Connector (C-3) PGE -32 Connector Part Information Part Number Way F Micro-Pack 100 Series (ROWN) Pin Wire Color Circuit No. Function 6 YEL 1836 Security System Sensor Signal 2003 & eyond Light Duty C/K Full-Size Truck Electrical

40 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LED Turn Signals pplication Notes PGE -33 Replacing rear turn signal lights with LED s will result in a rapid flash rate. This FMVSS required lamp outage detection is due to the change in lamp current through the flasher module. Two alternatives are offered to change the flash rate. 1. GM offers a low current LED Flasher module for the C/K truck applications. Part Number is a LED flasher module. The module is available from GM Service parts through your dealer. The flasher is included as part of SEO option 8H9. The Turn Signal /Hazard Flasher Module is located in the Left EC (Fuse Center). This EC is located behind the knee bolster under the instrument panel. 2. Proper flash rate can also be obtained by placing an equivalent power resistor in parallel with the LED s. lternately the LED s can be placed across the lamp loads. These wires may be accessed at pins & G of the tail lamp assemblies. The supply side for the right is the dark blue wire (circuit 2115) and the light blue wire (circuit 2114) for the left. The black wire (circuit 1) is the ground for both. Splicing guidelines, can be found at the Upfitter Integration website ( in the Electrical Guidelines Manual. Note: See Exterior lighting schematics in the Electrical Schematics section of the ody uilders Manual. NOTE: The truck will not have Lamp (or in this case LED) outage detection. lthough the life of high quality LED s are substantially longer than the bulbs they replace, it is the upfitters responsibility for making this modification & eyond Light Duty C/K Full-Size Truck Electrical REVISED 05/ Flasher module (continued on next page)

41 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL (pplication Notes continued from previous page) PGE -34 Remote HVC Compressor Operation Certain applications require HVC operation from a rear-mounted box for cooling purposes. Examples are ambulances and pharmaceutical or organ delivery vehicles. The refrigerant line is tapped into an auxiliary cooler. The 2003 C/K does not support remote HVC compressor operation. In the past the /C compressor could be turned on with a simple switch. The PCM controls the compressor in the 2003 C/K. The PCM receives commands to turn on the compressor via a Class 2 command from the HVC controller & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

42 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Electrical Component Legend Pickup / Chassis-Cab PGE C 15. DDM TC DSM 3. RDIO 1. QS4 4. Not Used 18. RTD 5. Remote OnStar 19. RS EC/VSES 20. OS 12. SDM-G 21. TCM 8. UH-EC 22. L-EC 9. TREC 23. R-EC SIM 10. ECM/PCM 24. MID-EC HVC 25. MP 12. D/SDRS 26. RSE {43 or (53&Y91)} WER 2. EDU 14. PDM/RF Reference PROJECT 03 C/K EU Panel Set: 1 schematic sheet1 OJECT ID REVISION k33m_ref_modules $IVEDWORK/k33m_ref_modules 00 STGE X VERSION LST CHNGED Y 6:56:51 am 0 Friday, September 21, 2001 ORGNIZTION CKMC & eyond Light Duty C/K Full-Size Truck Electrical K33m_ref_modules_1

43 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Electrical Component Legend Utility PGE C 2. TC RDIO 4. Not Used 5. Remote OnStar 6. EC/VSES. SDM-G 8. UH-EC 9. TREC 10. PCM 11. HVC 12. D/SDRS 13. WER 14. PDM/RF DDM 16. DSM 1. QS4 18. RTD 19. RS/RR-HVC 20. OS 21. TCM 22. L-EC 23. R-EC SIM 24. MID-EC 25. MP 26. RSE 2. R-HE 28. CDX 1 15 Reference PROJECT 03 C/K EU Panel Set: 1 schematic sheet1 OJECT ID REVISION k33m_ref_modules $IVEDWORK/k33m_ref_modules 00 STGE X VERSION LST CHNGED Y 6:56:51 am 0 Friday, September 21, 2001 ORGNIZTION CKMC & eyond Light Duty C/K Full-Size Truck Electrical K33m_ref_modules_2

44 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Electrical Component Legend cronyms and bbreviations The following cronyms and bbreviations are used in the Electrical Component Legend, Ground Zone and Electrical schematic sections of this document. PGE -3 03/53/43 Pickup (Regular/Extended/Crew) 06 Utility (oth 06 & 906) 36 SUT (Sport Utility Truck) 06/906 Utility (Regular/Large) S ntilock rake System OS utomatic Occupant Sensor DG ccommodation Device Gateway D Digital udio roadcast DIC Driver Information Center DDM Driver Door Module DSM Driver Seat Module EP Electric djustable Pedals EC Electronic rake Controller ECC Electronic Climate Control ECM Engine Control Module EDU Electronic Driver Unit ETC Electronic Throttle Control EVO Electronically Variable Orifice FOH Fuel Operated Heater HE Heater Evaporator lower SM HSM Heated Seat Module HVC C PCM PDM PPS QS4 RF RP RS RSE RTD SDRS SDM TC TC TCM TPS TREC VSES EU MCE Heat Vent ir Condition Instrument Panel Cluster Powertrain Control Module Passenger Door Module Pedal Position Sensor Quadrasteer Remote Function ctuator Rear Parking id Rear Seat udio Rear Seat Entertainment Real Time Damping Satellite Digital udio Radio Services Sensing and Diagnostic Module Throttle ctuator Control Truck ody Controller Transmission Control Module Throttle Position Sensor Transfer Case Electronic Controller Vehicle Stability Enhancement System Electrical rchitecture Update Mid Cycle Enhancement 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04

45 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers: Underhood EC (Fuse Center) PGE & eyond Light Duty C/K Full-Size Truck Electrical

46 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers: Underhood EC (Fuse Center) PGE -5 Fuse # Name Rating Description #1 STUD 1 40 Trailer Wiring, utomatic Level Control (LC) Compressor Relay #2 MEC 1 SET C, RT DOOR C #3 LOWER 40 lower Motor #4 LEC 2 LOCKS Fuse, DDM Fuse, PDM Fuse, ECC Fuse, UX PWR 2 Fuse #5 STUD 2 30 Trailer Wiring, Emergency Vehicle Roof Lamp Relay #6 S 60 Electronic rake Control Module (ECM) # VSES/ECS 60 Not Used #8 IGN 40 Ignition Switch RUN, STRT, RUN/STRT/CCY, STRTER Relay #9 IGN 40 Ignition Switch RUN/CC, RUN/STRT #10 LEC 1 FLSH Fuse, TC 2 Fuse, TC 2 Fuse, TC 2C Fuse, LT DOORS Fuse #11 TRL PRK 15 Trailer Wiring #12 RR PRK 10 Exterior Lamps-Right Rear, Clearance Lamps-Right #13 LR PRK 10 Exterior Lamps-Left Rear, Clearance Lamps-Left #14 INTPRK 10 Power Takeoff (PTO) Switch, Inflatable Restraint I/P Module Disable Switch #15 STOP LP 25 Stop Lamp Switch #16 TC TT 10 ody Control Module (CM), PSS-Key Module #1 Not Used #18 SUNROOF 25 Not Used #19 SEO 2 30 Roof eacon Relay #20 4WS 15 Rear Wheel Steering Control Module, Evaporative Emission (EVP) Canister Vent Solenoid #21 RR HVC 30 Not Used #22 UX PWR 20 ccessory Power Outlets, uxiliary Power Outlets #23 PCM 1 15 Powertrain Control Module (PCM), Mass ir Flow (MFS) Sensor, Evaporative Emission (EVP) Canister Purge Solenoid, Fuel Composition Sensor, Secondary Fuel Pump Relay #24 ETC/ECM 15 Throttle ctuator Control (TC) #25 INJ 1 (Gas) 15 Fuel Injectors-Odd-Numbered, Ignition Coils-Odd-Numbered #25 ECMRPCV (Diesel) 15 Engine Control Module (ECM) #26 INJ 2 (Gas) 15 Fuel Injectors-Even-Numbered, Ignition Coils-Even-Numbered #26 EDU 15 Fuel Injector Control Module (FCIM) #2 IGN E 10 /C COMP Relay, Park/Neutral Position (PNP) Switch, Turn Signal/Multifunction Switch, Headlamp Leveling Components, Clutch Start Switch #28 RTD 30 Not Used #29 TRL /U 10 ody Control Module (CM), Trailer Wiring, ack-up larm #30 PCM (Gas) 20 Powertrain Control Module, F/PMP Relay #30 PCM (Diesel) 20 Engine Control Module (ECM), EDU Relay #31 O2 (Gas) 15 Heated Oxygen Sensors-Upstream (continued on next page) 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04

47 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers: Underhood EC (Fuse Center) (continued) Fuse # Name Rating Description #31 FUEL HT (Diesel) 15 Fuel Heater, Glow Plug Controller, Intake ir (I) Heater Relay, EGR System Components #32 /U LP 20 Park/Neutral Position (PNP) Switch #33 RR DEFOG 30 DEFOG Relay #34 O2 (Gas) 15 Heated Oxygen Sensors-Downstream #34 EMCI (Diesel) 15 IT/MF Sensor, Engine Control Module (ECM) #35 SIR 15 Inflatable Restraint Sensing and Diagnostic Module (SDM), Memory Seat Module-Passenger, Inside Rearview Mirror #36 FRT PRK 10 Park/Turn Signal Lamps-Front, Marker Lamps-Front #3 SEO IGN 10 DEFOG Relay, Instrument Panel Cluster (C) #38 TC IGN 1 10 ody Control Module (CM) #39 HI HDLP-LT 10 Headlamp-High eam-left #40 LH HID 20 Not Used #41 DRL 10 DRL Relay (Domestic), Daytime Running Lamps (Export) #42 Not Used #43 C/DIC 10 Instrument Panel Cluster (C) #44 HVC/ECS 10 HVC Control Module #45 CIG LTR 15 Cigar Lighter, Data Link Connector (DLC) #46 HI HDLP-RT 10 Headlamp-High eam-right #4 /C COMP 10 /C COMP Relay #48 Not Used #49 RR WPR 25 Not Used # RDIO 15 Entertainment System Components #51 SEO 1 15 Instrument Panel Cluster (C), Rear Fog Lamp Relay, Overhead Console, Roof eacon Switch #52 LO HDLP-LT 10 Headlamp-Low eam-left #53 TSI 10 Stop Lamp Switch #54 CRNK 10 Powertrain Control Module (PCM)-Gas, Engine Control Module (ECM)-Diesel #55 LO HDLP-RT 10 Headlamp-Low eam-right #56 FOG LP 15 FOG LP Relay #5 W/S WSH 15 W/S WSH Relay #58 INFO 15 Vehicle Communication Interface Module (VCIM), Rear Seat Entertainment (RSE) ssembly, Remote Playback Device-CD Player #59 RDIO MP 30 udio mplifier #60 RH HID 20 Not Used #61 HORN 15 Horn-Left, Horn-Right #62 EP 15 Not Used #63 TREC 30 Transfer Case Encoder Motor, Transfer Case Shift Control Module #64 S 15 Supplemental rake ssist PGE & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04

48 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers: Underhood Fuse lock PGE - (1) Fuse lock-underhood racket (2) I/P Harness (3) Radiator Support (4) Inline Connector C103 or C104-I/P Harness Side (5) Inline Connector C103 or C104-Forward Lamp Harness Side (6) LH attery Tray () Fuse lock-underhood racket (8) Fuse lock-underhood racket 2003 & eyond Light Duty C/K Full-Size Truck Electrical

49 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers : MID EC (Relay Center) PGE -8 The following connectors allow for easy access to vehicle functions. These are open connector positions on the Mid EC. SEO connector in Mid EC Connector C-8 Connector LK Cavity Wire Color Circuit No. Function Fuse Rating Orange 2340 Hot at all times 30 mp - SEO2 Fuse Not Used - C Pink 39 Hot Run/Start 10 mp - SEO IGN Fuse D Yellow 243 Hot ccy/run 10 mp - SEO CCY Fuse E Orange 4540 Hot at all times 15 mp - SEO 1 Fuse F lack 10 Ground SEO TRLR UPFIT Trailer rake Control wiring harness connector in Mid EC Connector C- Connector RN Cavity Wire Color Circuit No. Function rown 2409 Interior Park Lamp Feed Red 242 Hot at all times C Dark lue 4 Trailer rake Control Feed D Light lue 1620 Trailer CHMSL Feed E Not Used F Ground 10 Ground Upfitter Connector in Mid EC no # designation Connector CRM Cavity Wire Color Circuit No. Function Orange 4540 Hot at all times Not Used C Not Used D Dark Green 81 Primary Vehicle Speed Signal ll of the connectors and pin-outs are listed in the Connector and Pin-out section for the Mid EC & eyond Light Duty C/K Full-Size Truck Electrical

50 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers : MID EC (Relay Center) Location PGE & eyond Light Duty C/K Full-Size Truck Electrical

51 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers : Left EC (Fuse Center) PGE & eyond Light Duty C/K Full-Size Truck Electrical

52 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers : Left EC (Fuse Center) Fuse # Name Rating Description #1 IGN 3 10 Rear Wheel Steering Control Module #2 ECC 10 Not Used #3 DDM 15 Driver Door Module (DDM) #4 VEH STOP 15 Tail/Stop and Turn Signal Lamps-Rear, Throttle ctuator Control (TC) #5 IGN 0 10 Passlock Sensor, utomatic Transmission, Powertrain Control Module (PCM)-Gas, Engine Control Module (ECM)-Diesel #6 RR WPR6 15 Not Used # 4WD 15 Front xle ctuator, Transfer Case Shift Control Switch, uxiliary attery Relay #8 TC IGN 0 10 ody Control Module (CM) #9 CRUISE 10 Cruise Control Switch, Cruise Control Module, Steering Wheel Speed/Position Sensor, Power Takeoff (PTO) Switch #10 HVC 1 10 HVC Control Module, HVC ctuators #11 HTR/C 30 HVC Control Module #12 SEO CCY 10 Upfitter Provisions #13 VEH CHMSL 10 Center High Mounted Stop Lamp (CHMSL) #14 RKE 10 Stop Lamp Switch, Electronic rake Control Module (ECM), Clutch Start Switch #15 WS WPR 25 Windshield Wiper Motor Module #16 PDM 10 Front Passenger Door Module (FPDM) #1 TC 2 15 ody Control Module (CM) #18 TC 2C 15 ody Control Module (CM) #19 UX PWR 2 20 Not Used #20 TC CCY 10 ody Control Module (CM) #21 RT TRLR ST/TRN 10 Trailer Wiring #22 LT TRLR ST/TRN 10 Trailer Wiring #23 TC 2 15 ody Control Module (CM) #24 LOCKS 20 Door Lock/Unlock Relays #25 FLSH 25 Turn Signal/Hazard Flasher Module #26 RT TRN 10 Turn Signal Lamps-Right, Marker Lamps-Right, Front Passenger Door Module (FPDM), Instrument Panel Cluster (C) #2 LT TURN 10 Turn Signal Lamps-Left, Marker Lamps-Left, Driver Door Module (DDM), Instrument Panel Cluster (C) #28 LT DOORS (C) 25 Driver Door Module (DDM), Window Switch-LR PGE & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04

53 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers : Left EC (Fuse Center) PGE -12 (1) Fuse lock Connector (2) ody Control Module (CM) Connector (3) Splice Pack 205 (SP205) (4) Fuse lock (5) Data Link Connector (DLC) (6) LH Courtesy Lamp () LH Courtesy Lamp Socket (8) LH Support to Dash (9) Left Windshield Pillar Trim Panel 2003 & eyond Light Duty C/K Full-Size Truck Electrical

54 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution Centers : Right EC (Fuse Center) FIGURE Fuse lock Right I/P (c) PGE & eyond Light Duty C/K Full-Size Truck Electrical (1) Fuse lock-right I/P (2) Instrument Panel

55 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Zones Chassis-Cab PGE -14 GROUND ZONE 4 Type = CLEN PCM/ECM GND #1 PCM/ECM GND #2 PCM/ECM GND #3 PCM/ECM GND #4 TCM GND #1 TCM GND #2 NSU SWITCH MF SENSOR & IT LOW OIL SWITCH O2 SENSOR #1 O2 SENSOR #2 O2 SENSOR #3 O2 SENSOR #4 GROUND ZONE 10 Type = DIRTY DDM LF MINI-WEDGE DRIVER DR LOCK SW DOOR LOCK RELY LH CTSY LMP FRONT WER SW FRT PCT SENSOR/MTR TRNSFER CSE SW TREC MDL - GND #1 TREC MDL GND #2 FRONT WER MOTOR CLUSTER DT LINK CONN. U/H LMP HZRD SWITCH TSI SWITCH HEDLMP SW EP RELY LIGHT R SWITCH EMERGENCY LT RELY WRECKER PKG RELY GROUND ZONE 10 Type = DIRTY IR INLET MTR SM LOWER MTR RES SM FRONT LOWER MTR UX PWR OUTLET UX PWR OUTLET PTO SWITCH RH CTSY LMP CIGR LIGHTER HVC MDL CKLIGHT RF MINI-WEDGE UX PWR OUTLET PSIR DEFET SW GLOVE OX LMP ROOF MRKER LMPS SHTRY LMP UX PWR OUTLET POWER POINT FRT UX HVC MDL PSS LOCK SW O/H REDING LMPS ISRV MIRROR/COMPSS PDM GROUND ZONE 12 Type = DIRTY PSSER SET CHMSL RR DEFOG GRID CSE GROUND Type = CSE SPK/GLW PLUGS GLW PLUG CONTROLLER GP LT NK CNTL RLY COIL GP RT NK CNTL RLY COIL GROUND ZONE Type = DIRTY TT NEG (UX ND SEC) CSE GROUND Type = CSE MN XFER CSE SW GND ZONE 10 Circuit #10 GND ZONE 12 Circuit #12 CSE GROUND Type = CSE STRTER MTR GND ZONE RH INE UNDER HOOD GND GND ZONE 19 GND ZONE 4 RIGHT RER INE LOCK UNDER HOOD GND GND ZONE 9 GND ZONE 23 Circuit #2351 CSE RDIO GROUND ZONE 23 Type = CLEN OS MDL SDM MDL GND ZONE 5 INE LOCK GND ZONE 8 Circuit #5 CSE COLUMN CSE HORN CSE SDM nd RPO Gate RPO = L GROUND ZONE 5 Type = DIRTY (S5) GND ZONE 3 FRONT INE LOCK EVEN IGN COILS/DRIVER ODD IGN COILS/DRIVER COIL SM DRIVER CSE GROUND Type = CSE GENERTORS CSE GROUND Type = CSE KNOCK SENSOR 1 KNOCK SENSOR 2 CSE GROUND Type = CSE EDU (L) GND ZONE 6 INE LOCK GROUND ZONE 1 Type = DIRTY RH HORN LH HORN RH DRL LH DRL RH TURN/PRK LMP LH TURN/PRK LMP RH LOW EM LMP LH LOW EM LMP RH HIGH EM LMP LH HIGH EM LMP RH FOG LMP LH FOG LMP FRT WSHER PMP MTR RR WSHER PMP MTR LOW WSHER SWITCH PRIMRY TT NEG GND ZONE 1 Circuit #1 GND ZONE 21 Circuit #21 GND ZONE 21 Circuit #21 CSE TC CSE PRK RKE GND ZONE 18 Circuit #1851 GND ZONE 1 Circuit #1 GND ZONE 11 Circuit #11 GROUND ZONE 6 Type = DIRTY TTERY NEG GROUND ZONE 21 Type = DIRTY S PUMP FRT XLE SWITCH SM TRNSFER CSE LEVER SM GROUND ZONE 5 Type = DIRTY (S5) PRIMRY FUEL RELY RKE DIFFERENTIL SW IGN1 RELY LOW COOLNT SW EVEN IGN COILS/DRIVER ODD IGN COILS/DRIVER COIL SM DRIVER /C CLUTCH ETC MODULE PSI CYCLING SW PTO CONNECTOR UX TT SOLENOID (TP2) FLEX FUEL SENSOR HYDROOOST FLUID LVL SW RKE FLUID LVL SW nd RPO Gate RPO = L GROUND ZONE 21 Type = DIRTY PRIMRY FUEL PUMP SECONDRY FUEL PUMP GROUND ZONE 18 CLEN TOW/HUL & KEY IN SW HI-RES POS SENSOR RDIO GND FLSHER SM LF PWR DOOR LCK SW CDX MODULE DG CONN. ONSTR MODULE GND #1 ONSTR MODULE GND #2 C MODULE GND #2 HEDLMP SW GND #2 PSS LOCK SW CRUISE MODULE D/SDRS MODULE HVC MODULE DT LINK CONN. GND #2 TC GND #1 TC GND #2 OSE MP FOG LMP SW GROUND ZONE 11 Type = DIRTY DRIVER SET/DSM ROOF MTD ECON ROOF MTD ECON RLY GROUND ZONE 1 Type = DIRTY LH RR TURN LMP RH RR TURN LMP LH /U LMP RH /U LMP LH LICENSE LMP RH LICENSE LMP LH STOP LMP RH STOP LMP LH PRK LMP RH PRK LMP TRLR WIRING Ground Distribution PROJECT 03 C/K EU Panel Set: 1 schematic sheet1 OJECT ID k33m_gnd 212 $IVEDWORK/k33m_gnd 00 REVISION 00 STGE X VERSION LST CHNGED Y 2:59:43 pm 0 Thursday, May 2, 2002 ORGNIZTION CKMC & eyond Light Duty C/K Full-Size Truck Electrical K33m_gnd_01

56 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Zones Pickup PGE -15 GROUND ZONE 4 Type = CLEN PCM/ECM GND #1 PCM/ECM GND #2 PCM/ECM GND #3 PCM/ECM GND #4 TCM GND #1 TCM GND #2 NSU SWITCH MF SENSOR & IT LOW OIL SWITCH O2 SENSOR #1 O2 SENSOR #2 O2 SENSOR #3 O2 SENSOR #4 GROUND ZONE 10 Type = DIRTY DDM LF MINI-WEDGE DRIVER DR LOCK SW DOOR LOCK RELY LH CTSY LMP FRONT WER SW EMERGENCY LT RELY TRNSFER CSE SW TREC MDL - GND #1 TREC MDL GND #2 FRONT WER MOTOR CLUSTER DT LINK CONN. U/H LMP HZRD SWITCH TSI SWITCH HEDLMP SW EP RELY LIGHT R SWITCH EMERGENCY LT RELY GROUND ZONE 10 Type = DIRTY GROUND ZONE 10 MSR SWITCH Type = DIRTY FRT PCT SENSOR/MTR RF MINI-WEDGE SUNROOF RELY POWER SUNROOF ROOF MRKER LMPS FRT UX HVC MDL PSS LOCK SW C-PILLR DOME/RDG LMP (43) O/H REDING LMPS -PILLR DOME/RDG LMP (43) ISRV MIRROR/COMPSS PDM IR INLET MTR SM LOWER MTR RES SM FRONT LOWER MTR UX PWR OUTLET UX PWR OUTLET PTO SWITCH RH CTSY LMP CIGR LIGHTER HVC MDL CKLIGHT CIGR LIGHTER ILLUM UX PWR OUTLET PSIR DEFET SW GLOVE OX LMP QS4 SWITCH SHTRY LMP UX PWR OUTLET POWER POINT LR HTD SET SW (43) RR HTD SET SW (43) GROUND ZONE 12 Type = DIRTY PSSER SET RR MINI-WEDGE (43) RR PWR WDO SW (43) RR DOOR CTSY LMP (43) RR HTD SET (43) RP DIG. CONN. (36) RTD MDL (36) CHMSL (36) RP MDL (36) RR DEFOG GRID GROUND ZONE 26 Type = DIRTY RR DEFOG GRID (43) GROUND ZONE 1 Type = DIRTY HD TRLR WIRING RTD COMPRESSOR (36) LH RR TURN LMP RH RR TURN LMNP LH /U LMP RH /U LMP LH LICENSE LMP RH LICENSE LMP LH STOP LMP RH STOP LMP LH PRK LMP RH PRK LMP MSR RR SHOCK MSR LR SHOCK CSE GROUND Type = CSE SPK/GLW PLUGS GLW PLUG CONTROLLER GP LT NK CNTL RLY COIL GP RT NK CNTL RLY COIL GROUND ZONE Type = DIRTY TT NEG (UX ND SEC) CSE GROUND Type = CSE MN XFER CSE SW GND ZONE 10 Circuit #10 GND ZONE 12 Circuit #12 CSE GROUND Type = CSE STRTER MTR GND ZONE RH INE UNDER HOOD GND GND ZONE 19 GND ZONE 26 Circuit #26 GND ZONE 4 RIGHT RER INE LOCK UNDER HOOD GND GND ZONE 9 GND ZONE 23 Circuit #2351 CSE RDIO GROUND ZONE 23 Type = CLEN RTD MDL (36) OS MDL (36) SDM MDL RF MTD ECON (43) RF MTD ECON RLY (43) GND ZONE 1 Circuit #1 GND ZONE 5 GND ZONE 8 Circuit #5 GND ZONE 28 Circuit #2851 INE LOCK CSE COLUMN CSE HORN CSE SDM nd RPO Gate RPO = L GROUND ZONE 5 Type = DIRTY (S5) GROUND ZONE 6 Type = DIRTY GROUND ZONE 5 Type = DIRTY (S5) GND ZONE 3 FRONT INE LOCK EVEN IGN COILS/DRIVER ODD IGN COILS/DRIVER COIL SM DRIVER TTERY NEG QS4 MOTOR QS4 MODULE PRIMRY FUEL RELY RKE DIFFERENTIL SW IGN1 RELY LOW COOLNT SW EVEN IGN COILS/DRIVER ODD IGN COILS/DRIVER COIL SM DRIVER /C CLUTCH ETC MODULE PSI CYCLING SW PTO CONNECTOR UX TT SOLENOID (TP2) FLEX FUEL SENSOR CSE GROUND Type = CSE GENERTORS CSE GROUND Type = CSE KNOCK SENSOR 1 KNOCK SENSOR 2 CSE GROUND Type = CSE EDU (L) HYDROOOST FLUID LVL SW RKE FLUID LVL SW GND ZONE 6 nd RPO Gate RPO = L INE LOCK GROUND ZONE 1 Type = DIRTY RH HORN LH HORN RH DRL LH DRL RH TURN/PRK LMP LH TURN/PRK LMP RH LOW EM LMP LH LOW EM LMP RH HIGH EM LMP LH HIGH EM LMP RH FOG LMP LH FOG LMP FRT WSHER PMP MTR RR WSHER PMP MTR LOW WSHER SWITCH PRIMRY TT NEG LH POSITION LMP (EXP) RH POSITION LMP (EXP) GROUND ZONE 21 Type = DIRTY S PUMP FRT XLE SWITCH SM TRNSFER CSE LEVER SM PRIMRY FUEL PUMP SECONDRY FUEL PUMP GND ZONE 1 Circuit #1 GROUND ZONE 18 CLEN TOW/HUL & KEY IN SW HI-RES POS SENSOR RDIO GND FLSHER SM LF PWR DOOR LCK SW CDX MODULE VSES MODULE ONSTR MODULE GND #1 ONSTR MODULE GND #2 C MODULE GND #2 HEDLMP SW GND #2 PSS LOCK SW CRUISE MODULE D/SDRS MODULE HVC MODULE DT LINK CONN. GND #2 OSE MP TC GND #1 TC GND #2 DG CONN. TRLR WIRING TCS/VSES SWITCH RP DISLE SW (36) FRT FOG SW GND ZONE 21 Circuit #21 CSE TC CSE PRK RKE GND ZONE 18 Circuit #1851 GND ZONE 11 Circuit #11 GROUND ZONE 11 Type = DIRTY LR MINI-WEDGE (43) GND ZONE 16 Circuit #16 GROUND ZONE 16 Type = DIRTY LR PWR WDO SW (43) LR DR CTSY LMP (43) LR HTD SET (43) DRIVER SET/DSM ROOF MTD ECON ROOF MTD ECON RLY GND ZONE 15 Circuit #15 CKUP LRM EMERGENCY LT GROUND ZONE 15 Type = DIRTY MSR RF SHOCK MSR LF SHOCK GND ZONE 22 Circuit #22 Ground Distribution PROJECT 03 C/K EU Panel Set: 1 schematic sheet1 OJECT ID k33m_gnd 212 $IVEDWORK/k33m_gnd 00 REVISION 00 STGE X VERSION LST CHNGED Y 2:59:43 pm 0 Thursday, May 2, 2002 ORGNIZTION CKMC & eyond Light Duty C/K Full-Size Truck Electrical K33m_gnd_02

57 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Zones Utility PGE -16 GROUND ZONE 4 Type = CLEN PCM/ECM GND #1 PCM/ECM GND #2 PCM/ECM GND #3 PCM/ECM GND #4 TCM GND #1 TCM GND #2 NSU SWITCH MF SENSOR & IT LOW OIL SWITCH O2 SENSOR #1 O2 SENSOR #2 O2 SENSOR #3 O2 SENSOR #4 GROUND ZONE 10 Type = DIRTY DDM LF MINI-WEDGE DRIVER DR LOCK SW DOOR LOCK RELY LH CTSY LMP FRONT WER SW EMERGENCY LT RELY TRNSFER CSE SW TREC MDL - GND #1 TREC MDL GND #2 FRONT WER MOTOR CLUSTER DT LINK CONN. U/H LMP HZRD SWITCH TSI SWITCH HEDLMP SW EP RELY LIGHT R SWITCH EMERGENCY LT RELY GROUND ZONE 10 Type = DIRTY MSR SWITCH FRT PCT SENSOR/MTR -PILLR DOME LMP (-YE9) C-PILLR DOME LMP (-YE9) D-PILLR DOME LMP (-YE9) LH SUNSHDE ILLUM FRT UX HVC MDL RR PCT SENSOR/MTR RH SUNSHDE ILLUM C-PILLR DOME/RDG LMP (+YE9) O/H REDING LMPS -PILLR DOME/RDG LMP (+YE9) ISRV MIRROR/COMPSS PDM PSS LOCK SW RF MINI-WEDGE SUNROOF RELY POWER SUNROOF ROOF MRKER LMPS GROUND ZONE 10 Type = DIRTY IR INLET MTR SM LOWER MTR RES SM FRONT LOWER MTR UX PWR OUTLET UX PWR OUTLET PTO SWITCH RH CTSY LMP CIGR LIGHTER HVC MDL CKLIGHT CIGR LIGHTER ILLUM UX PWR OUTLET PSIR DEFET SW GLOVE OX LMP QS4 SWITCH NLOG CLOCK SHTRY LMP UX PWR OUTLET POWER POINT LR HTD SET SW RR HTD SET SW UM8 RDIO GROUND ZONE 12 Type = DIRTY PSSER SET RR MINI-WEDGE RR PWR WDO SW RR DOOR CTSY LMP RR HTD SET GROUND ZONE 14 Type = DIRTY RR UX MODE CT RR UX TEMP CT RR HVC MODULE GND #1 RR HVC MODULE GND #2 RR ECC MODULE SM RR HTR /C MDL SM RR UX HVC SM RR HVC MDL SM LIFT GLSS SW KEY CYL SW RR WER MMTR LH LIFT GTE JR SW RH LIFT GTE JR SW LIFT GTE WDO GRID (E52) CHMSL D-PILLR POWER POINT LH DOOR JR (ZW9) RP MODULE RP DIGNOSTIC CONN. RTD MODULE RH DOOR JR (ZW9) CSE GROUND Type = CSE SPK/GLW PLUGS GLW PLUG CONTROLLER GP LT NK CNTL RLY COIL GP RT NK CNTL RLY COIL GROUND ZONE Type = DIRTY TT NEG (UX ND SEC) CSE GROUND Type = CSE MN XFER CSE SW GND ZONE 10 Circuit #10 GND ZONE 12 Circuit #12 GND ZONE 14 Circuit #14 CSE GROUND Type = CSE STRTER MTR GND ZONE RH INE UNDER HOOD GND GND ZONE 19 GND ZONE 4 RIGHT RER INE LOCK UNDER HOOD GND GND ZONE 9 CSE RDIO GND ZONE 23 Circuit #2351 GROUND ZONE 23 Type = CLEN CRGO LOCK SW RTD MODULE OS MODULE SDM MODULE GND ZONE 28 Circuit #2851 GND ZONE 5 GND ZONE 8 Circuit #5 INE LOCK CSE COLUMN CSE HORN CSE SDM RPO = L GROUND ZONE 5 Type = DIRTY (S5) GROUND ZONE 6 Type = DIRTY GROUND ZONE 5 Type = DIRTY (S5) GND ZONE 3 FRONT INE nd RPO Gate LOCK EVEN IGN COILS/DRIVER ODD IGN COILS/DRIVER COIL SM DRIVER TTERY NEG QS4 MOTOR QS4 MODULE CSE GROUND Type = CSE GENERTORS CSE GROUND Type = CSE KNOCK SENSOR 1 KNOCK SENSOR 2 CSE GROUND Type = CSE EDU (L) PRIMRY FUEL RELY RKE DIFFERENTIL SW IGN1 RELY LOW COOLNT SW EVEN IGN COILS/DRIVER ODD IGN COILS/DRIVER COIL SM DRIVER /C CLUTCH ETC MODULE PSI CYCLING SW PTO CONNECTOR UX TT SOLENOID (TP2) FLEX FUEL SENSOR HYDROOOST FLUID LVL SW RKE FLUID LVL SW GND ZONE 6 nd RPO Gate RPO = L INE LOCK GROUND ZONE 1 Type = DIRTY RH HORN LH HORN RH DRL LH DRL RH TURN/PRK LMP LH TURN/PRK LMP RH LOW EM LMP LH LOW EM LMP RH HIGH EM LMP LH HIGH EM LMP RH FOG LMP LH FOG LMP FRT WSHER PMP MTR RR WSHER PMP MTR LOW WSHER SWITCH PRIMRY TT NEG GROUND ZONE 21 Type = DIRTY S PUMP FRT XLE SWITCH SM TRNSFER CSE LEVER SM GROUND ZONE 21 Type = DIRTY PRIMRY FUEL PUMP SECONDRY FUEL PUMP GND ZONE 1 Circuit #1 GROUND ZONE 18 CLEN GND ZONE 21 Circuit #21 TOW/HUL & KEY IN SW HI-RES POS SENSOR RDIO GND FLSHER SM LF PWR DOOR LCK SW CDX MODULE VSES MODULE ONSTR MODULE GND #1 ONSTR MODULE GND #2 C MODULE GND #2 RS MODULE GND PSS LOCK SW CRUISE MODULE D/SDRS MODULE HVC MODULE DT LINK CONN. GND #2 OSE MP TC GND #1 TC GND #2 DG CONN. TRLR WIRING RSE MODULE HEDLMP SW GND #2 TCS/VSES SW RP DISLE SW FOG/CRGO LMP SW FRT FOG/RR WER SW GND ZONE 21 Circuit #21 CSE TC CSE PRK RKE GND ZONE 18 Circuit #1851 GND ZONE 11 Circuit #11 GROUND ZONE 11 Type = DIRTY GND ZONE 16 Circuit #16 LR MINI-WEDGE LR PWR WDO SW LR DR CTSY LMP LR HTD SET DRIVER SET/DSM GROUND ZONE 16 Type = DIRTY ROOF MTD ECON ROOF MTD ECON RLY GND ZONE 15 Circuit #15 CKUP LRM EMERGENCY LT GROUND ZONE 15 Type = DIRTY MSR RF SHOCK MSR LF SHOCK GND ZONE 22 Circuit #22 GROUND ZONE 1 Type = DIRTY GND ZONE 1 Circuit #1 HD TRLR WIRING RTD COMPRESSOR LH RR TURN LMP RH RR TURN LMNP LH /U LMP RH /U LMP LH LICENSE LMP RH LICENSE LMP LH STOP LMP RH STOP LMP LH PRK LMP RH PRK LMP MSR LR SHOCK MSR RR SHOCK Ground Distribution PROJECT 03 C/K EU Panel Set: 1 schematic sheet1 OJECT ID k33m_gnd 212 $IVEDWORK/k33m_gnd 00 REVISION 00 STGE X VERSION LST CHNGED Y 2:59:43 pm 0 Thursday, May 2, 2002 ORGNIZTION CKMC & eyond Light Duty C/K Full-Size Truck Electrical K33m_gnd_03

58 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL SEO Connector in Mid EC Connector C-8 PGE C-1 Connector Packard 280 Series Typical Connector (F) Color LK Typical Terminal Typical Cable Seal n/a Cavity Wire Color Circuit No. Function Fuse Rating ORN 2340 Hot at all times 30 mp SEO2 Fuse Not Used C PNK 39 Hot Run/Start 10 mp SEO IGN Fuse D YEL 243 Hot ccy/run 10 mp SEO CCY Fuse E ORN 4540 Hot at all times 15 mp SEO 1 Fuse F LK 10 Ground 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04

59 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Trailer rake Control Wiring Harness Connector in Mid EC Connector C- PGE C-2 Connector Packard 280 Series Typical Connector (F) Color RN Typical Terminal Typical Cable Seal n/a Cavity Wire Color Circuit No. Function RN 2409 Interior Park Lamp Feed RED 242 Hot at all times C LU DK 4 Trailer rake Control Feed D LU LT 1620 Trailer CHMSL Feed E Not Used F LK 10 Ground 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04

60 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Upfitter Connector in Mid EC no # designation PGE C-3 Connector Packard 280 Series Typical Connector (F) Color CRM Typical Terminal Typical Cable Seal n/a Cavity Wire Color Circuit No. Function ORN 4540 Hot at all times Not Used C Not Used D GRN DK 81 Primary Vehicle Speed Signal 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04

61 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Mid EC Connectors Location PGE C-4 SEO TRLR UPFIT MEC is located underneath the instrument panel to the left of the steering column & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04

62 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 04-05) Engine Control Module (ECM) Connector C-1 PGE C-5 Connector 56-Way F Micro 64 Sealed (LU) Typical Connector (F) Color LU Typical Terminal Typical Cable Seal (orange) Pin Wire Color Circuit No. Function 1 YEL 2361 SE J1939 Serial Data us + 2 DK GRN 2362 SE J1939 Serial Data us 3-4 Not Used 5 ORN 440 attery Positive Voltage 6 Not Used ORN/LK 105 Low Reference 8 PNK/LK 632 Low Reference 9 LK/WHT 451 Ground 10 PNK 439 Ignition 1 Voltage Not Used 13 YEL 492 MF Sensor Signal 14 RN/WHT 563 EGR Valve Position Signal 15 DK GRN 1049 Class 2 Serial Data 16 YEL 10 Class 2 Serial Data 1 TN Volt Reference 18 PNK 1020 Ignition 0 Voltage (M4) 19 PNK 439 Ignition 1 Voltage 20 ORN 440 attery Positive Voltage 21 GRY Volt Reference 22 Not Used 23 ORN/LK Volt Reference Not Used 26 DK LU Wait to Start Indicator Control 2 Not Used 28 LT LU 1162 PP Sensor 2 Signal 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 chart continued on next page

63 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 04-05) Engine Control Module (ECM) Connector C-1 (continued) PGE C-6 chart continued from previous page Pin Wire Color Circuit No. Function 29 Not Used 30 PPL 1589 Fuel Level Sensor Signal Primary 31 WHT/LK Volt Reference 32 WHT/LK Volt Reference 33 TN Volt Reference 34 GRY Volt Reference 35 Not Used 36 YEL/LK Volt Reference 3 YEL 2834 Fuel Pressure Regulator Solenoid Control 39 GRY 59 5-Volt Reference 40 PPL/WHT 2530 Fuel Pressure Regulator Solenoid Supply Voltage 41 GRY 23 Generator Field Duty Cycle Signal 42 PNK 1039 Ignition 1 Voltage Pin Wire Color Circuit No. Function 43 DK LU 1936 Fuel Level Sensor Signal Secondary 44 DK GRN/WHT 465 Fuel Pump Relay Control 45 Not Used 46 YEL/LK 182 Vehicle Speed Sensors 4 GRY Volt Reference Not Used RED Volt Reference 51 YEL 2834 Fuel Pressure Regulator Solenoid Control 52 GRY/LK 2219 FICM Relay Control 53 DK GRN/WHT 81 Vehicle Speed Signal 54 PPL/WHT 2530 Fuel Pressure Regulator Solenoid Supply Voltage 55 Not Used 56 PNK 1039 Ignition 1 Voltage 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

64 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 04-05) Engine Control Module (ECM) Connector C-2 PGE C- Connector 3-Way F Micro 64 Sealed (LK) Typical Connector (F) Color LK Typical Terminal Typical Cable Seal (orange) Individual Cable Seal (orange) Pin Wire Color Circuit No. Function 1 Not Used 2 ORN/LK 2919 Low Reference 3 Not Used 4 RN 25 Charge Indicator Control 5-6 Not Used GRY/LK WD Low Signal 8 LK 254 Low Reference 9-12 Not Used 13 LK 251 Low Reference 14 GRY 20 Low Reference Not Used 1 YEL/LK 8 Water in Fuel Indicator Control 18 Not Used 19 DK LU 1161 PP Sensor 1 Signal 20 Not Used 21 DK LU 2466 Trans MIL Request 22 Not Used 23 LT GRN 432 Turbocharger oost Sensor Signal 24 DK GRN 1163 PP Sensor 3 Signal 25 TN/WHT 332 Oil Pressure Sensor Signal 26 RN 114 Oil Level Switch Signal 2 YEL 158 Fuel Temperature Signal 28 LT GRN Volt Reference 29 GRY/LK 2931 Low Reference 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 chart continued on next page

65 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 04-05) Engine Control Module (ECM) Connector C-2 (continued) PGE C-8 chart continued from previous page Pin Wire Color Circuit No. Function 30 ORN/LK 469 Low Reference 31 YEL 55 Turbocharger Vane Position Sensor Signal 32 Not Used 33 ORN/LK 564 EGR Motor High Control 34 Not Used 35 LT GRN/ LK 546 EGR Motor Low Control 36 LK/WHT 451 Ground 3 Not Used 38 LT GRN 148 Coolant Level Switch Signal 39 LK 255 Low Reference 40 RN 121 Low Reference 41 Not Used 42 YEL 2918 FRP Sensor Signal 44 TN 5928 Low Reference 45 Not Used 46 GRY/LK 433 aro Sensor Signal 4-48 Not Used 49 DK LU 5930 Turbocharger Vane Position Control Solenoid Valve High Control WHT 5931 Low Reference 51 Not Used 52 PNK/LK 146 Fuel Injector 3 Control Pin Wire Color Circuit No. Function 53 ORN/LK 564 EGR Motor High Control 54 PPL 122 Low Reference 55 LT GRN/ LK 546 EGR Motor Low Control 56 GRY 123 Low Reference 5 RN 2524 Generator 2 Turn on Signal 58 LK 552 Low Reference 59 Not Used 60 LT LU 1320 CHMSL Supply Voltage 61 PPL 420 TCC rake Switch/Cruise Control Release Signal 62 Not Used 63 LT LU 2832 Engine Speed Signal 64 LK 40 Low Reference 65 LT GRN/LK 145 Fuel Injector 2 Control 66 RED/LK 8 Fuel Injector Control 6 YEL 410 ECT Sensor Signal 68 DK LU/WHT 88 Fuel Injector 8 Control 69 LT LU/LK 844 Fuel Injector 4 Control 0 LK/WHT 845 Fuel Injector 5 Control 1 YEL/LK 846 Fuel Injector 6 Control 2 LK 144 Fuel Injector 1 Control 3 LK/WHT 451 Ground 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

66 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 04-05) Engine Control Module (ECM) Connector C-3 PGE C-9 Connector 56-Way F Micro 64 Sealed (GRY) Typical Connector (F) Color GRY Typical Terminal Typical Cable Seal (orange) Pin Wire Color Circuit No. Function 1 LT LU 494 PTO Engine Kill Signal (PTO) 2-5 Not Used 6 LT GRN 488 PTO on Switch Signal (PTO) Not Used 8 LK/WHT 1695 Front xle Switch Signal 9 Not Used 10 PNK 1039 Ignition 1 Voltage 11 Not Used 12 PPL/WHT 821 VSS High Signal (ML6) YEL 400 VSS High Signal (M4) 13 Not Used 14 PNK 1039 Ignition 1 Voltage Not Used 1 YEL 2522 PTO Engage Signal (PTO) 18 PPL 806 Crank Voltage 19 DK LU 84 Cruise Control Set/Coast Switch Signal Not Used 22 GRY/LK 8 Cruise Control Resume/ccel Switch Signal 23 LT GRN/LK 822 VSS Low Signal (ML6) 24 TN 42 IT Sensor Signal Not Used 30 GRY 39 Cruise Control on Switch Signal 31 ORN/LK 186 Park/Neutral Signal 32 Not Used 33 RED/LK 380 /C Refrigerant Pressure Sensor Signal 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 chart continued on next page

67 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 04-05) Engine Control Module (ECM) Connector C-3 (continued) PGE C-10 chart continued from previous page Pin Wire Color Circuit No. Function 34 Not Used 35 YEL/LK 625 Starter Enable Relay Control 36 Not Used 3 WHT 121 Engine Speed Signal 39 PPL 2562 PTO Control (PTO) 40 RN/WHT 419 MIL Control 41 DK GRN/WHT 459 /C Compressor Clutch Relay Control 42 Not Used 43 YEL/LK 1868 Low Reference Pin Wire Color Circuit No. Function 44 LK/WHT 451 Ground 45 GRY 1524 ackup Lamp Supply Voltage 46 Not Used 4 GRY 48 CPP Switch Signal 48 RN 18 Low Reference 49- Not Used 51 RN/WHT 633 CMP Sensor Signal 52 DK LU/WHT 1869 CKP Sensor Signal Not Used 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

68 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 04-05) Engine Control Module (ECM) Location PGE C-11 (1) attery Tray Left (2) Engine Control Module (ECM) (3) Transmission Control Module (TCM) (4) Fan Shroud 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

69 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 06) Engine Control Module (ECM) Connector C-1 PGE C-12 Connector 96-Way F Sealed (K) Typical Connector (F) Color K Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function 1 GY 5421 Injector Positive Voltage Control Group 1 (Early Production) OG 5421 Injector Positive Voltage Control Group 1 (Late Production) 2 D-U/WH 88 Fuel Injector 8 Control 3 RD/K 8 Fuel Injector Control 4-5 Not Used 6 OG/K 469 Low Reference PU 806 Crank Voltage 8 YE 2522 PTO Engage Signal 9 N 114 Oil Level Switch Signal 10 GY/K 8 Cruise Control Resume/ccel Switch Signal 11 YE/K 622 Low Reference (Early Production) GY 622 Low Reference (Late Production) 12 GY Volt Reference 13 TN Volt Reference 14 Not Used 15 GY Volt Reference 16-1 Not Used 18 YE 492 MF Sensor Signal 19 L-GN 432 MP Sensor Signal 20 YE 594 Turbocharger Vane Position Sensor Signal 21 L-U 1162 PP Sensor 2 Signal 22 Not Used 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 chart continued on next page

70 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 06) Engine Control Module (ECM) Connector C-1 (continued) PGE C-13 chart continued from previous page Pin Wire Color Circuit No. Function 23 K 255 Low Reference 24 PU/WH 2530 Fuel Pressure Regulator Solenoid Supply Voltage 25 PK 5425 Injector Positive Voltage Control Group 4 26 YE/K 846 Fuel Injector 6 Control 2 PK/K 146 Fuel Injector 3 Control 28 Not Used 29 N 25 Charge Indicator Control (8X5) 30 OG/K 2919 Low Reference 31 N 121 Low Reference 32 GY 48 CPP Switch Signal 33 Not Used 34 D-U 84 Cruise Control Set/Coast Switch Signal Not Used 3 GY Volt Reference 38 TN Volt Reference 39 TN Volt Reference 40 L-GN Volt Reference (Early Production) PU/WH Volt Reference (Late Production) 41 D-U Volt Reference 42 TN 42 IT Sensor Signal 43 Not Used 44 TN/WH 332 Oil Pressure Sensor Signal Not Used 4 GY 20 Low Reference 48 D-U 5930 Turbocharger Vane Position Control Solenoid Valve High Control 49 PU 5423 Injector Positive Voltage Control Group & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 Pin Wire Color Circuit No. Function K/WH 845 Fuel Injector 5 Control 51 L-U/K 844 Fuel Injector 4 Control 52 Not Used 53 YE/K 6120 Low Reference 54 Not Used 55 GY/K 2931 Low Reference 56 D-U/WH 6265 CMP Sensor Signal 5 GY/K WD Low Signal 58 L-GN 148 Coolant Level Switch Signal 59 Not Used 60 L-GN 488 PTO On Switch Signal 61 GY 39 Cruise Control ON Switch Signal 62 K 552 Low Reference 63 OG/K 5929 Low Reference 64 Not Used 65 L-U 6118 IT Sensor 2 Signal 66 Not Used 6 N/WH 563 EGR Valve Position Signal 68 YE 410 ECT Sensor Signal 69-0 Not Used 1 YE/K 625 Starter Enable Relay Control 2 YE 2834 Fuel Pressure Regulator Solenoid Control 3 YE 5422 Injector Positive Voltage Control Group 2 4 K 144 Fuel Injector 1 Control 5 L-GN/K 145 Fuel Injector 2 Control 6 PK 1039 Ignition 1 Voltage OG 440 attery Positive Voltage chart continued on next page

71 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 06) Engine Control Module (ECM) Connector C-1 (continued) PGE C-14 chart continued from previous page Pin Wire Color Circuit No. Function 8 PU 122 Low Reference 9 D-U/WH 621 CKP Sensor Signal (Early Production) WH/K 621 CKP Sensor Signal (Late Production) Not Used 82 K/WH 1695 xle Switch Signal 83 Not Used 84 GY 1524 ackup Lamp Supply Voltage 85 YE/K 8 Water In Fuel Indicator Control 86 K 254 Low Reference Pin Wire Color Circuit No. Function 8 Not Used 88 PK/K 6266 Low Reference (Early Production) N 6266 Low Reference (Late Production) Not Used 92 YE 2918 FRP Sensor Signal Not Used 96 WH 5931 Turbocharger Vane Position Control Solenoid Valve Low Control 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

72 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 06) Engine Control Module (ECM) Connector C-2 PGE C-15 Connector 58-Way F Sealed (K) Typical Connector (F) Color K Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function 1 PK 339 Ignition 1 Voltage 2 K/WH 451 Ground 3 PK 339 Ignition 1 Voltage 4 K/WH 451 Ground 5 PK 339 Ignition 1 Voltage 6 K/WH 451 Ground - 8 Not Used 9 D-GN 1049 Class 2 Serial Data Not Used 12 D-GN/WH 465 Fuel Pump Relay Control 13 K 251 Low Reference 14 Not Used 15 WH/K Volt Reference 16 D-U Wait To Start Indicator Control 1 Not Used 18 PU 2562 PTO Control (PTO) 19 GY/K 2219 ECM Relay Control 20 Not Used 21 PK 439 Ignition 1 Voltage 22 L-U 1320 CHMSL Supply Voltage 23 N 25 Charge Indicator Control 24 N 2524 Generator 2 Turn On Signal (8X5/YF2) Not Used 2 GY Volt Reference 28 Not Used 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 chart continued on next page

73 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 06) Engine Control Module (ECM) Connector C-2 (continued) PGE C-16 chart continued from previous page Pin Wire Color Circuit No. Function 29 N 121 Low Reference 30 N/WH 419 MIL Control 31 D-GN/WH 459 /C Compressor Clutch Relay Control 32 Not Used 33 OG/K 564 EGR Motor High Control 34 K 40 Low Reference 35 RD/K 380 /C Refrigerant Pressure Sensor Signal 36 PU/WH 1589 Fuel Level Sensor Signal Primary (Early Production) PU 1589 Fuel Level Sensor Signal Primary (Late Production) 3 Not Used 38 GY 23 Generator Field Duty Cycle Signal 39 OG/K 186 Park/Neutral Signal (MW) 40 PU 420 TCC rake Switch/Cruise Control Release Switch Signal 41 Not Used 42 D-GN/WH 81 Vehicle Speed Signal 43 Not Used Pin Wire Color Circuit No. Function 44 TN 21 High Speed GMLN Serial Data us 45 PU/WH 821 VSS High Signal (ML6) YE 400 VSS High Signal (MW) 46 L-GN/K 546 EGR Motor Low Control 4 N 6062 Low Reference 48 YE 158 Fuel Temperature Signal 49 D-U 1161 PP Sensor 1 Signal D-U 1936 Fuel Level Sensor Signal - Secondary (Except NQZ) Not Used 54 YE/K 182 Vehicle Speed Signal 55 WH 121 Engine Speed Signal 56 PK 1020 Ignition 0 Voltage 5 N/WH 20 High Speed GMLN Serial Data us + (Early Production) N/WH 20 High Speed GMLN Serial Data us + (Late Production) 58 L-GN/K 822 VSS Low Signal (ML6) 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

74 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LLY ( 06) Engine Control Module (ECM) Location PGE C-1 (1) ( 06) Engine Control Module (ECM) (2) Transmission Control Module (TCM) 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

75 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL L Engine Control Module (ECM) Connector C-1 PGE C-18 Connector 80-Way F Micro-Pack 100W Sealed (U) Typical Connector (F) Color LU Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function 1 K/WH 351 Ground 2 L-GN Volt Reference 3 K 144 Fuel Injector 1 Control 4 L-U/K 844 Fuel Injector 4 Control 5 TN/WH 332 Oil Pressure Sensor Signal 6 Not Used YE/K Volt Reference 8 GY 05 5 Volt Reference 9 D-GN 2362 CN Serial Data Low 10 YE 2361 CN Serial Data High 11 Not Used 12 D-U/WH 1869 CKP Sensor Signal 13-1 Not Used 18 D-U 84 Cruise Control Set/Coast Switch Signal 19 PK 439 Ignition 1 Voltage 20 OG 440 attery Positive Voltage 21 YE/K 1868 Low Reference 22 GY/K 8 Cruise Control Resume/ccel Switch Signal 23 Not Used 24 K 40 Low Reference 25 OG/K 469 Low Reference Not Used 29 PK 5349 uxiliary Cooling Fan 30 L-GN 148 Coolant Level Switch Signal 31 D-GN 534 High Idle Switch Signal 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 chart continued on next page

76 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL L Engine Control Module (ECM) Connector C-1 (continued) PGE C-19 chart continued from previous page Pin Wire Color Circuit No. Function 32 N 2524 Generator 2 Turn On Signal TCC rake Switch/Cruise Control PU Release Signal D-GN 1433 Clutch Start Switch Signal 34 OG/K 186 Park/Neutral Signal 35 Not Used 36 L-GN/K 145 Fuel Injector 2 Control 3 K/WH 846 Fuel Injector 6 Control Not Used 40 K/WH 351 Ground 41 N 121 Low Reference 42 Not Used 43 D-U/WH 88 Fuel Injector 8 Control 44 PK/K 146 Ignition 1 Voltage 45 TN Volt Reference 46 WH/K Volt Reference 4 WH/K Volt Reference 48 TN Volt Reference Not Used 52 L-U 6 Glow Plug Signal 53 Not Used 54 PU 122 Low Reference 55 L-U 1162 PP Sensor 2 Signal Pin Wire Color Circuit No. Function 56 Not Used 5 OG 440 attery Positive Voltage 58 D-GN 1049 ECM/PCM/VCM Class 2 Serial Data 59 Not Used 60 TN 413 HO2S Low Reference 61 PK/K 632 Low Reference 62 L-GN 24 ackup Lamp Supply Voltage 63 K 40 Low Reference 64 K 552 Low Reference 65 GY 123 Low Reference Not Used 0 N 114 Oil Level Switch Signal 1 L-GN 488 PTO On Switch-Signal 2 L-GN 2081 Exhaust rake Switch 3 N/WH 633 CMP Sensor Signal 4 YE 410 ECT Sensor Signal 5 PK 1020 Off/Run/Crank Voltage 6 YE/K 846 Fuel Injector 6 Control RD/K 8 Fuel Injector Control 8 N 534 Intake ir Heater 9 GY/K 2219 FICM Relay Control 80 GY 20 Low Reference 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

77 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL L Engine Control Module (ECM) Connector C-2 PGE C-20 Connector 80-Way F Micro-Pack 100W Sealed (CL) Typical Connector (F) Color CL Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function 1 K/WH 351 Ground 2-3 Not Used 4 YE 44 Starter Relay Coil Control 5 Not Used 6 YE 5 Glow Plug Relay Control PU 2656 Engine Exhaust rake Restore Request 8 Not Used 9 D-GN/WH 465 Fuel Pump Relay Control - Primary 10 WH 121 Engine Speed Signal 11 Not Used 12 D-GN 1163 PP Sensor 3 Signal 13 YE 2522 PTO Feedback 14 L-GN 432 MP Sensor Signal 15 N 25 Charge Indicator Control 16 GY 39 Cruise Control On Switch Signal 1 D-GN/WH 62 /C Request Signal 18 L-U 1320 CHMSL Supply Voltage/Stop Lamp Supply Voltage 19 Not Used 20 D-GN 2222 Signal Low - Rear (ML6) 21 L-U 2221 Signal High - Rear 22 Not Used 23 OG/K 2919 Low Reference 24 D-U 1161 PP Sensor 1 Signal 25 YE 158 Fuel Temperature Signal Not Used 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 chart continued on next page

78 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL L Engine Control Module (ECM) Connector C-2 (continued) PGE C-21 chart continued from previous page Pin Wire Color Circuit No. Function 29 GY 59 5 Volt Reference Not Used 34 D-GN/WH 459 /C Compressor Clutch Relay Control 35 Not Used 36 D-U Wait to Start Indicator Control 3 PU 2562 PTO Control 38 RD 2013 High Idle Indicator Control 39 RD Volt Reference 40 K/WH 351 Ground 41 GY/K 2931 MF Ground 42 PU/WH 2530 Fuel Pressure Regulator Solenoid Supply Voltage 43 Not Used 44 PK 339 Ignition 1 Voltage 45 Not Used 46 N/WH 419 MIL Control 4-48 Not Used 49 YE/K 182 Vehicle Speed Signal D-GN/WH 81 Vehicle Speed Signal 51 TN 42 IT Sensor Signal 52 GY 23 Generator Field Duty Cycle Signal 53 Not Used Pin Wire Color Circuit No. Function 54 PU 1589 Fuel Level Sensor Signal - Primary 55 D-GN 603 Low Coolant Indicator Control 56 L-U 494 Primary rake Indicator Control 5 K 40 Low Reference 58 YE 2918 FRP Sensor Signal 59 PU 420 TCC rake Switch/Cruise Control Release Signal 60 N 18 Low Reference 61 Not Used 62 PK 5349 Intake Heater 63 Not Used 64 GY/K 433 RO Sensor Signal 65 YE 492 MF Sensor Signal 66-2 Not Used 3 D-U 1936 Fuel Level Sensor Signal - Secondary 4-5 Not Used 6 L-U 2832 Engine Speed Signal YE 2834 Fuel Pressure Regulator Solenoid Control 8 OG/K 105 Low Reference 9-80 Not Used 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

79 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Powertrain Control Module (PCM) Connector C-1 PGE C-22 Connector 80-Way F Micro-Pack 100W Sealed (LU) Typical Connector (F) Color LU Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function 1 LK/WHT 451 Ground 2 LT GRN Volt Reference 3 PNK/LK 146 Fuel Injector 3 Control 4 LT GRN/LK 145 Fuel Injector 2 Control 5-6 Not Used GRY Volt Reference 8-10 Not Used 11 LT LU 186 Knock Sensor 2 Signal 12 DK LU/ WHT 1869 CKP Sensor Signal 13 ORN/LK 463 Requested Torque Signal 14 ORN/LK 1061 URT Serial Data 15 DK LU/ WHT 4 URT Serial Data 16-1 Not Used 18 DK GRN 1433 Clutch Start Switch Signal (M/T) 19 PNK 439 Ignition 1 Voltage 20 ORN 440 attery Positive Voltage 21 YEL/LK 1868 Low Reference 22 LT GRN 488 PTO Enable Switch (w/pto) 23 LK 40 Low Reference 24 LK/WHT 451 Ground 25 TN 161 HO2S Low Signal ank 2 Sensor 2 (w/nc1) 26 TN 16 HO2S Low Signal ank 2 Sensor 1 2 LK/WHT 451 Ground 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 chart continued on next page

80 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Powertrain Control Module (PCM) Connector C-1 (continued) PGE C-23 chart continued from previous page Pin Wire Color Circuit No. Function 28 TN 1669 HO2S Low Signal ank 1 Sensor 2 (w/nc1) 29 TN 1664 HO2S Low Signal ank 1 Sensor 1 30 LT GRN 148 Coolant Level Switch Signal Not Used 33 PPL 420 TCC rake Switch/Cruise Control Release Signal 34 ORN/LK 186 Park/Neutral Signal (llison Transmission Only) 35 GRY 48 CPP Switch Signal (M/T) 36 LK 144 Fuel Injector 1 Control 3 YEL/LK 846 Fuel Injector 6 Control 38 Not Used 39 YEL/LK 625 Starter Enable Relay Control 40 LK/WHT 451 Ground 41 PPL 19 Low Reference 42 Not Used 43 RED/LK 8 Fuel Injector Control 44 LT LU/LK 844 Fuel Injector 4 Control 45 GRY Volt Reference 46 GRY 44 5 Volt Reference 4 GRY Volt Reference 48 GRY 59 5 Volt Reference 49 - Not Used 51 DK LU 496 Knock Sensor 1 Signal 52 YEL 2522 PTO Status (w/pto) 53 Not Used 54 ORN/LK 469 Low Reference 55 RN 1456 EGR Valve Position Signal Pin Wire Color Circuit No. Function 56 Not Used 5 ORN 440 attery Positive Voltage 58 DK GRN 1049 PCM Class 2 Serial Data 59 YEL 10 Class 2 Serial Data 60 Not Used 61 PNK/LK 632 Low Reference 62 Not Used 63 LK 255 Low Reference 64 LK/WHT 451 Ground 65 PPL 160 HO2S High Signal ank 2 Sensor 2 (w/nc1) 66 PPL 1666 HO2S High Signal ank 2 Sensor 1 6 LK/WHT 451 Ground 68 PPL/WHT 1668 HO2S High Signal ank 1 Sensor 2 (w/nc1) 69 PPL/WHT 1665 HO2S High Signal ank 1 Sensor 1 0 RN 114 Oil Level Switch Signal 1 LT LU 494 PTO Engine Kill (w/pto) 2 Not Used 3 RN/WHT 633 CMP Sensor Signal 4 YEL 410 ECT Sensor Signal 5 PNK 1020 Off/Run/Crank Voltage 6 LK/WHT 845 Fuel Injector 5 Control DK LU/ WHT 88 Fuel Injector 8 Control 8 PPL 2562 PTO Engage (w/pto) 9 Not Used 80 LK 40 Low Reference 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

81 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Powertrain Control Module (PCM) Connector C-2 PGE C-24 Connector 80-Way F Micro-Pack 100W Sealed (RED) Typical Connector (F) Color RED Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function 1 LK/WHT 451 Ground 2 WHT 246 Torque Response Reply Signal (llison Transmission Only) 3 TN 1465 Fuel Pump Relay Control - Secondary 4 Not Used 5 TN/LK 464 Delivered Torque Signal (llison Transmission Only) 6 Not Used RED 166 EGR Valve Supply Voltage 8 Not Used 9 DK GRN/ WHT 465 Fuel Pump Relay Control 10 WHT 121 Engine Speed Signal 11 Not Used 12 DK LU 2466 Trans MIL Request Signal (llison Transmission Only) 13 Not Used 14 RED/LK 380 /C Refrigerant Pressure Sensor Signal 15 RN 25 Charge Indicator Control 16 GRY/LK WD Low Signal (w/4wd) 1-18 Not Used 19 LK/WHT 1695 xle Switch Signal (w/np2) 20 LT GRN/LK 822 VSS Low Signal 21 PPL/WHT 821 VSS High Signal (Except llison Transmission) YEL 400 Signal High - Front (llison Transmission Only) 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006 chart continued on next page

82 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Powertrain Control Module (PCM) Connector C-2 (continued) PGE C-25 chart continued from previous page Pin Wire Color Circuit No. Function Not Used 25 TN 42 IT Sensor Signal 26 PPL 2121 IC 1 Control 2 RED 212 IC Control 28 LT LU/WHT 2126 IC 6 Control 29 DK GRN/ WHT 2124 IC 4 Control 30 Not Used 31 YEL 492 MF Sensor Signal 32 LT GRN 432 MP Sensor Signal 33 Not Used 34 DK GRN/ WHT 428 EVP Canister Purge Solenoid Control Not Used 39 RED Volt Reference 40 LK/WHT 451 Ground 41 WHT 25 EGR Solenoid Control 42 Not Used 43 DK GRN/ WHT 459 /C Compressor Clutch Relay Control 44 Not Used 45 WHT 1310 EVP Canister Vent Solenoid Control 46 RN/WHT 419 MIL Control 4-48 Not Used 49 YEL/LK 182 Vehicle Speed Signal DK GRN/ WHT 81 Vehicle Speed Signal Pin Wire Color Circuit No. Function 51 Not Used 52 RN 2391 HO2S Heater Low Control ank 1 Sensor 2 (W/NC1) 53 RED/WHT 3223 HO2S Heater Low Control ank 2 Sensor 2 (W/NC1) 54 PPL 1589 Fuel Level Sensor Signal Not Used 5 LK 552 Low Reference 58 TN/WHT 332 Oil Pressure Sensor Signal 59 PPL 806 Crank Voltage 60 RN 2129 Low Reference 61 RN/WHT 2130 Low Reference Not Used 64 DK GRN 890 Fuel Tank Pressure Sensor Signal 65 Not Used 66 PPL/WHT 2128 IC 8 Control 6 RED/WHT 2122 IC 2 Control 68 DK GRN 2125 IC 5 Control 69 LT LU 2123 IC 3 Control 0-1 Not Used 2 LK/WHT 3122 HO2S Heater Low Control ank 1 Sensor 2 (w/nc1) 3 DK LU 1936 Fuel Level Sensor Signal - Secondary 4 LT GRN/WHT 3213 HO2S Heater Low Control ank 2 Sensor Not Used 80 LK 251 Low Reference 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

83 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Control Module (ECM) / Powertrain Control Module (PCM) Location PGE C-26 (1) Engine Control Module (ECM) / Powertrain Control Module (PCM) (2) ECM/PCM Connector C-1 and C & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

84 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Take Off (PTO) Relay Connector PGE C-2 Connector 4-Way F Metri-Pack 280 FLX LK (MD GRY) Typical Connector (F) Color MD GRY Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function 30 ORN 3440 attery Positive Voltage 85 LT GRN 488 Power Take Off Switch Output Enable 86 PPL 2562 PTO Engage 8 WHT 2561 PTO Signal 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

85 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Take Off (PTO) Relay Location PGE C-28 (1) Fuse lock-underhood (2) Engine Wiring Harness (3) Power Take Off (PTO) Relay 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

86 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Take Off (PTO) Switch Connector PGE C-29 Connector 8-Way F Metri-Pack 1 Series (LT GRY) Typical Connector (F) Color LT GRY Typical Terminal Typical Cable Seal n/a Pin Wire Color Circuit No. Function RN 41 Ignition 3 Voltage LT GRN 488 Power Take Off Switch Output Enable C GRY 8 Instrument Panel Lamp Supply Voltage 1 D GRY 39 Cruise Control On Switch Signal E YEL 2522 PTO Status Signal F LK 18 Ground G DK LU 84 Cruise Control Set/Coast Switch Signal H PPL/WHT 1382 LED Dimming Signal 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

87 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Take Off (PTO) Switch Connector Location PGE C & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

88 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Take Off (PTO) Interface Connector PGE C-31 TRUCK SIDE ODY UILDER SIDE Connector 10-Way Metri-Pack 1 Series Sealed Typical Connector (F) (M) Color NT LK Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function Not Used LT LU 494 Power Take Off Engine Shutdown Signal C LT GRN 488 Power Take Off Enable Switch D LK 5 Ground E Not Used F Not Used G YEL 2522 Power Take Off Status (Feedback) H WHT 2561 PTO Relay Switch Control Signal J DK LU 84 Cruise Control Set/Coast Switch This part includes a Cover: PN & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

89 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Take Off (PTO) Interface Connector Location PGE C-32 (1) Turbine Sensor Harness Connector (2) Power Take-Off (PTO) Connector (6) Park/Neutral Position (PNP) Switch Connectors (3) Output Speed Sensor Harness Connector () llison Transmission (4) Transfer Case Selector Shift Control Switch (8) Engine Harness (5) Transmission Connector Harness (9) utomatic Transmission Input Shaft Speed (ISS) Sensor 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

90 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Rear Lamps Junction lock C-1 Rear Chassis Harness Connector PGE C-33 Connector 8-Way F Global Tech 280 Series (LU) Typical Connector (F) Color LU Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function LT LU 2114 Left Turn Signal Lamps Supply Voltage LT LU 1320 CHMSL Supply Voltage C LT GRN 24 ackup Lamp Supply Voltage D RN/WHT 2609 Right Rear Park Lamps Supply Voltage Ground (30 Series Except 15 Chassis Cab) E LK 16 Ground (30 Series Chassis Cab) 1 10/20 Series F Not Used G RN 29 Left Rear Park Lamps Supply Voltage H DK LU 2115 Right Turn Signal Lamps Supply Voltage 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

91 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Rear Lamps Junction lock C-2 Left Tail Lamp Connector PGE C-34 Connector -Way F Global Tech 280 Series (GRY) Typical Connector (F) Color GRY Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function LK 1 Ground LK 1 Ground (Only) C LK 1 Ground D LT LU 1320 CHMSL Supply Voltage E RN 29 Left Rear Park Lamps Supply Voltage F LT GRN 24 ackup Lamp Supply Voltage H LT LU 2114 Left Turn Signal Lamps Supply Voltage 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

92 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Rear Lamps Junction lock C-3 License Plate Connector PGE C-35 Connector 8-Way F Global Tech 280 Series (RN) Typical Connector (F) Color RN Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function RN/WHT 2609 Right Rear Park Lamps Supply Voltage Not Used C LK 1 Ground (GMC Only) D LK 1 Ground (GMC Only) E LK 1 Ground (Chevy) F Not Used G RN 29 Left Rear Park Lamps Supply Voltage H LK 1 Ground 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

93 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Rear Lamps Junction lock C-4 Right Tail Lamp Connector PGE C-36 Connector -Way F Global Tech 280 Series (LK) Typical Connector (F) Color LK Typical Terminal Typical Cable Seal Pin Wire Color Circuit No. Function LT LU 1320 CHMSL Supply Voltage RN/WHT 2609 Right Rear Park Lamps Supply Voltage C LK 1 Ground D LK 1 Ground E LT GRN 24 ackup Lamp Supply Voltage F DK LU 2115 Right Turn Signal Lamps Supply Voltage H LK 1 Ground 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

94 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Rear Lamps Junction lock Location PGE C-3 (1) Frame (2) Junction lock Rear Lamps (3) Junction lock Mounting racket 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

95 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Trailer Connector PGE C-38 Connector -Way F Metri-Pack 280 Sealed (LK) Typical Connector Color LK Typical Terminal n/a Typical Cable Seal n/a Pin Wire Color Circuit No. Function LT GRN 1624 Trailer ackup Lamps Supply Voltage LK 1 Ground C DK LU 4 Trailer uxiliary Supply Voltage D DK GRN 1619 Trailer Right Rear Turn/Stop Lamp Supply Voltage E RED 42 attery Positive Voltage F RN 2109 Trailer Park Lamps Supply Voltage G YEL 1618 Trailer Left Rear Turn/Stop Lamp Supply Voltage 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

96 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Trailer Connector Location PGE C-39 (1) Platform ssembly Trailer Weight Distribution Hitch (3) Trailer Wiring Receptacle racket (1) Platform ssembly Trailer Weight Distribution Hitch (2) Trailer Wiring Receptacle (3) Trailer Wiring Receptacle racket 2003 & eyond Light Duty C/K Full-Size Truck Electrical REVISED 04/2006

97 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-1 3 S INJ INJ J1-F1 J2-E6 J2-E10 J2-D9 J2-9 J2-D10 J2-C10 L59 GS1 L59 L59 GS1 L59 GS1 L59 GS1 L59 L59 GS1 L59 GS1 &LM/LR4/LQ4/LQ9 &LM/LR4/LQ4/LQ9 &L PNK 0.5 GXL 19 &L PNK 0.5 GXL 19 &LU3 &L PNK 0.5 GXL 19 &L PNK 0.5 GXL 19 &L PNK 0.5 GXL 19 &L PNK 0.5 GXL 19 &LU3 &L PNK 0.5 GXL 19 &L PNK 0.5 GXL F_INJ F_INJ F_INJ F_INJ5 CONTROLS Fuel Injector Page 8-20//C -3 L59_INJ2 L59_INJ4 CONTROLS Fuel Injector Page 8-20/C -3 L59_INJ6 L59_INJ IGN_COIL2 CONTROLS Fuel Injector Page 8-20C/ -3/2 L59_INJ1 L59_INJ3 CONTROLS Fuel Injector Page 8-20/C -3 L59_INJ5 L59_INJ CONTROLS Fuel Injector Page CONTROLS Fuel Injector Page CONTROLS Fuel Injector Page CONTROLS Fuel Injector Page CONTROLS Even Ign Coil/Lu3 (Dist) Page 8-20//C -10/16/12 CONTROLS Fuel Injector Page CONTROLS Fuel Injector Page CONTROLS Fuel Injector Page CONTROLS Fuel Injector Page &LU PNK &LU PNK &LM/LR4/LQ4/LQ PNK GXL 19 TXL 139 S_PWR LU3_INJ IGN_COIL1 LU3_INJ3 F_INJ &S SUPPLEMENTL RKE SSIST S Mdl Page 8-44D -1 CONTROLS Fuel Injector Page 8-20C -3 CONTROLS Odd Ign Coil/Lu3 (Coil Driver) Page 8-20//C -9/15/12 CONTROLS Fuel Injector Page 8-20C -3 CONTROLS Fuel Injector Page &LM/LR4/LQ4/LQ PNK 0.5 GXL 19 F_INJ4 CONTROLS Fuel Injector Page & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 &LM/LR4/LQ4/LQ PNK 0.5 GXL 19 F_INJ8 CONTROLS Fuel Injector Page OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION RIUTION (GS) CK EU 03 X k33010a 010 PROD 1 CKMCE Panel Set: 1 schematic sheet1 824 $IVEDWORK/k33010a 010 Tuesday, September 24, 2002 Panel Set: 1 &LM/LR4/LQ4/LQ PNK 0.5 GXL 19 F_INJ3 CONTROLS Fuel Injector Page RPO LEGEND GS = L18/L59/LQ4/LQ9/LM/LR4/LU3 GS1=&LQ4/LQ9/LM/LR4 CLF = LR4&NC1 K33010a_010_01

98 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-2 3 PCMI ETC Ign1 Relay ubec_3b Page IGN1_RLY IGNRLY_GND Gnd Zone #5 MIN CHSSIS Page TT J2-10 J2-12 J3-E3 J2-9 T_CL &L18/L59/LM/LQ4/LQ9/LR4/LU PNK &L18/L59/LM/LQ4/LQ9/LR4/LU PNK &L PNK &L18/JF4/KUP-L PNK Mobile Radio - Megafuse-125 mega_125a 001 UPC FN 125MPS MF_IGN 439 PURGE_FD 439 SEC_FRLY1 CONTROLS Maf Sensor Page 8-20//C -8/14/11 CONTROLS Canister Purge Page 8-20//C -2 FUEL SNDR/PUMP Sec Fuel Relay Page 8-22E/G/H -2 Ring Term-Mob Radio UPC FN _IGN1 FLX_FUEL ETC_FD =&9L4 2. RED 2.0 FUSELINK 19 CSRYJPR &GS SD002 CONTROLS Pcm Page 8-20//C -4 CONTROLS Gen3-lternate Fuel Sensor Page ETC Etc Module Page MORDIO_PWR MOILE RDIO Seo Mob Radio Fuse Page STRTING & CHRGING attery Page T_PWR RIUTION (GS) 03 X k33010a CK EU Panel Set: 2 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION schematic sheet1 824 $IVEDWORK/k33010a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 2 K33010a_010_02

99 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-3 1 C/DIC HORN_PWR HDLP_LOW 1 HDLP_HIGH 1 IGN RLY_T 1 1 STOP LP CIG LTR W/S WSH WSHPMP_RLY 1 WS_COIL_FD STRTING & CHRGING HORNS HEDLPS(W/O HID) HEDLPS(W/O HID) Ubec Sw Rly 2840 Horn Relay Hdlp Relay-Low Hdlp Relay-High 142 Page Page Page 8-100/ -1 Page 8-100/ -1 WSH/WE WSH/WE W/S Wash Rly W/S Wash Rly Page Page J1-F J1-12 J1-F12 J1-D RED 3.0 TWP 19 IGN_SW (Page 14) &L59/LM/LQ4/LQ9/LR4/LU ORN 0.5 TWP U1_U1 1 RTD RR WPR HI lk sm - Ubec Main att us ubec_main_batt3 001 UPC FN 1540 STOP_LPSW EXTERIOR LIGHTING Stop Lamp Sw Page 8-110/-2 DLC_PWR DT LINK CONN Data Link Conn Page S8 C_PWR UEC UEC_MIN_TT Page CHSSIS CIG_LTR C/DIC C Mdl Page J3-2 RTD_TT J1-4 CIGR LIGHTER Cigar Lighter Page UPLEVEL RIDE CONTROL Real Time Damping Mod Page RRWPR_PWR UPLEVEL RER WE/WSH Rear Motor sm - Wiper Page OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION RIUTION (GS) CK EU 03 X k33010a 010 PROD 1 CKMCE Panel Set: 3 schematic sheet1 824 $IVEDWORK/k33010a 010 Tuesday, September 24, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33010a_010_03

100 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-4 1 HVC PCM lk sm - Ubec Main att us ubec_main_batt1 001 UPC FN FPMP_RLY 1 U1_U1 FUEL SYSTEM Fuel Pump Relay Page 8-22E/F/G/H -1 Main attery us Page /10/11/ J1-5 J2-8 J ORN 440 &GS TCM_T &L18/L59/LM/LQ4/LQ9/LR4/LU ORN 0.8 TXL LCT TRNSMISSION Tcm Page T_HVC 440 _T1 _T2 &GS HVC Hvac Module Page 8-60/65/68-1 CONTROLS Ecm/Pcm Page 8-20//C -4 CONTROLS Ecm/Pcm Page 8-20//C -4 RPO LEGEND GS = L18/L59/LQ4/LQ9/LM/LR4/LU3 GS1=&LQ4/LQ9/LM/LR4 CLF = LR4&NC1 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION RIUTION (GS) CK EU 03 X k33010a 010 PROD 1 CKMCE Panel Set: 4 schematic sheet1 824 $IVEDWORK/k33010a 010 Tuesday, September 24, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33010a_010_04

101 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-5 1 FOG LPS UX PWR FGLP_FUSE FOG_T PRKLP_T 3440 FRT FOG LMPS FRT FOG LMPS EXT LIGHTING Fog Relay Com Fog Relay Parklamp Relay Page 8-103/C -1 Page 8-103/C -1 Page 8-110/ J2-2 J1-C10 &L18&PTO ORN PTO_RLY 1040 UX_PWR1 PTO Pto Rly Page CIGR LIGHTER ux Power Outlets 2 and 3 Page 8-19//C -1 RIUTION (GS) 03 X k33010a CK EU Panel Set: 5 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION schematic sheet1 824 $IVEDWORK/k33010a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 5 K33010a_010_05

102 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-6 1 INFOTINMENT J1-C2 LUXURY NON-LUXURY &Y91&U1S/U42/UE ORN 0.5 TWP S3240 -Y ORN 0.5 TWP J lk sm - Mbec ONSTR/RSE mbec_ H FN &U42&Y91 &UE1&Y ORN ORN 0.5 TWP 0.5 TWP RSE_PWR &U1S&Y ORN 0.5 TWP CDX_PWR &UE1&Y ORN 0.5 TWP ONST_ INFOJMPR S INFOJMPR J9-H J9-J INFOTINMENT-RSE Rse Module Page REMOTE CD PLYER Cdx Module Page ONSTR - LUXURY Onstar Module Page &UE1-Y ORN 0.5 TWP INFOJMPR ONST_2 ONSTR - LUXURY Onstar Module Page &UE1-Y ORN 0.5 TWP INFOJMPR ONST_INFO1 &U42-Y ORN 0.5 TWP INFOJMPR RSE_INFOPWR ONSTR - NON-LUXURY Onstar Module Page INFOTINMENT-RSE Rse Module Page ONST_INFO2 ONSTR - NON-LUXURY Onstar Module Page RIUTION (GS) CK EU 03 X Panel Set: 6 schematic sheet1 824 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am k33010a $IVEDWORK/k33010a PROD 1 Tuesday, September 24, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 6 K33010a_010_06

103 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D- 1 /C COMP RDIO RDO MP C_COMP U1_U1 /C COMPRESSOR CONT /C Enable Relay Page Main attery us 340 Page /10/11/12 /INFOJMPR J1-D4 J1-F2 LUXURY NON-LUXURY &YE ORN 0.5 TWP J1-C1 &UQ&Y ORN 1.0 TWP RDIO_PWR &UQ&Y ORN 1.0 TWP S340 &U2K/U2L&Y ORN 0.5 TWP D_PWR &UQ3/UQ ORN 1.0 TWP RDIO_PWR INFOT-RDIO SE/UPLEVEL Radio Module Page &UQ-Y ORN 1.0 TWP F GT MXD INFOJMPR 24M GT MXD INFOJMPR J9-E lk sm-radio Infot mbec_ UPC FN INFOT-RDIO PREMIUM Radio Module Page 8-1C -1 INFOT-D/SDRS Dab/Sdars Module Page &UQ&Y ORN 0.5 TWP &UQ-Y ORN 1.0 TWP INFOJMPR &U2K/U2L-Y ORN 0.5 TWP INFOJMPR &06/36/43&UQ-Y ORN 0.5 TWP INFOJMPR 340 CLK_N RS_PWR Z5 CIGR LIGHTER Clock Feed Page 8-19C -2 INFOTINMENT-RS Rsa Module Page 8-1C -3 RDIO_INFOPWR D_INFOPWR RS_INFOPWR INFOT-RDIO NON-PREMIUM Radio Module Page INFOTINMENT-D/SDRS Dab/Sdars Module Page INFOTINMENT-RS Rsa Module Page MP_PWR UPLEVEL INFOTINMENT mplifier Module Page 8-1/C -4 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION RIUTION (GS) CK EU 03 X k33010a 010 PROD 1 CKMCE Panel Set: schematic sheet1 824 $IVEDWORK/k33010a 010 Tuesday, September 24, 2002 Panel Set: 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33010a_010_0

104 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D TC TT SEO 1 SEO 2 TREC SUNROOF RR DEFOG S J1-D12 J1-E4 J1-E11 J1-1 J1-C1 J1-11 J ORN ORN 0.5 TWP &5G4/TRW ORN 3.0 TWP 19 &NP ORN 2.0 TXL 19 XFER_CSE &C ORN 2.0 TWP 19 RRDFOG_RLY 1140 PKEY_PWR &EXPORT THEFT DETERRENT Passkey Snsr Page J2-12 TC TC_VT &8S8 J1-E C_SEO1 C SEO IGN Feed Page SEO1_MEC (Page 18) 900 RKCLTCH J &TRW/5G4 J1-D RKCLTCH J8- SEO_2 ROOF MOUNTED ECON Roof eacon Rly Page 8-110D -1 lk sm - Mbec SEO 2 (eacon) mbec_ UPC FN TC_TT &NP1/NP8 /NR4 TRNSFER CSE CONTROL Trec Module Page 8-38/C/D -1 TRNSFER CSE CONTROL Transfer Case Page 8-38D -1 Ubec Main att (Exp) Page U1_U QS4_PWR 1 QS CHSSIS J3-4 &EV ORN 0.5 GXL CHSSIS &CF5 lk sm - Ubec Main att us (Gas) ubec_batt_gas2 002 UPC FN VENT_SOL 3840 POWER SUNROOF Power Sunroof Sys Page U1_U1 UEC UEC_MIN_TT Page SUNRF_PWR 1 RR HVC J1-10 &06/ ORN 3.0 TWP 19 RER DEFOG RR Defog Relay Page RRHVC_T 1 EP J1-1 &JF ORN 1.0 TWP EPRLY_PWR lk sm - Ubec Main att us ubec_main_batt4 001 UPC FN UPLEVEL FOUR WHEEL STEERING Qs4 Module Page OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION RIUTION (GS) CK EU 03 X k33010a 010 PROD 1 CKMCE schematic 8 Tuesday, September 24, 2002 Panel Set: 8 Panel Set: sheet1 824 $IVEDWORK/k33010a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 &GS CONTROLS Vent Solenoid Page 8-20//C -2 RRHVC lk sm-rr Hvac Page 8-66/69-1 SETS Eap Relay Page K33010a_010_08

105 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-9 lk sm - Ubec Main att us ubec_main_batt2 001 UPC FN Main att us (Exp3) Page VSES lk sm - Ubec att us Vses (Gas) ubec_batt_gas3 001 UPC FN VSES_FUSE 60 J-CSE FUSES LH HID/EXP LP RH HID/EXP LP lk sm - Ubec Main att us ubec_main_batt5 001 UPC FN 4042 CHSSIS J U1_U VSES_PRPMP UEC UEC_MIN_TT Page FWD LP 3640 FWD LP RKES/VSES Vses Pre-Charge Pump Page J4-D2 J4-E6 &TT ORN 0.8 TWP FWDLP &TT ORN 0.8 TWP FWDLP RHID_PWR HEDLMPS (Z5) RT-HID sm Page LHID_PWR HEDLMPS (Z5) LT- HID sm Page RIUTION (GS) CK EU 03 X Panel Set: 9 schematic sheet1 824 $IVEDWORK/k33010a 010 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am k33010a 010 PROD 1 Tuesday, September 24, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 9 K33010a_010_09

106 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D STUD1 S STUD SD001 1 lk sm - Ubec Main att us (Exp) ubec_batt_exp3 002 UPC FN J-CSE FUSES U1_U1 1 VSES_FUSE CHSSIS Main attery us Page //11/12 Main att us (Gas3) Page STUD_1 J9- STUD_2 442 S_MTR Stud1-Trlr UPC FN RKES bs Motor Page 8-44//C -1 Stud 2&5Y UPC FN Stud1-Trlr UPC FN &Z55&SERIES RED Stud1-ux attery UPC FN &5Y RED 3.0 TWP 19 ECON EMER_RLY 3.0 GXL 19 CHSSIS RTD_COMP 42 UXT_TP2 &TP2/80 ODY WIRING PROV Emer Light Relay Page 8-110E -1 EXP RIDE CONTROL Relay-Level Comp Page DOM DOM UX/DUL TTERY ux/dual attery Page EXP (Page 8) EXP Stud 2 Trailer UPC FN (Page 8) 42 EXP &Z55&SERIES10-T RED 3.0 GXL 19 CHSSIS =&Z55&SERIES20-T89#-Z55-T RED 3.0 GXL 19 CHSSIS =&T89-Z55#&T89&Z55&SERIES RED 3.0 GXL 19 CHSSIS 242 TRLR_PWR -LU3 TRILER WIRING Mbec Trailer (Mbec 4) Page 8-119/ -2/1 &Z55&SERIES10&T RED 3.0 GXL 19 CHSSIS TRLR_DOM TRLR_EXP TRLR WIRING (DOMESTIC) Trlr Inline Connector Page TRLR WIRING (EXPORT) 42 lunt Cut Page RIUTION (GS) CK EU 03 X Panel Set: 10 schematic sheet1 824 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am k33010a $IVEDWORK/k33010a PROD 1 Tuesday, September 24, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 10 K33010a_010_10

107 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-11 MEC LOWER lk sm - Ubec Main att us ubec_main_batt H FN 1 1 Ign LEC lk sm - Ubec Main att us ubec_main_batt H FN J-CSE FUSES J-CSE FUSES U1_U1 U1_U1 642 Main attery us 542 Page //10/11/ Main attery us Page //10/11/ J6- J5- J- J- &YE RED 5.0 TWP RED 3.0 TWP 19 LW_MTR HVC lower Mtr Page 8-60/65/68-1/4/3 JFUSE_IGN 342 (Page14) 42. RED 5.0 TWP S RTDOORS SETS RTDOORS J S1440 lk sm - Mbec Seats mbec_ UPC FN 42 LTDOORS J S TC 2 TC TC 2C FLSHER FLSH_MDL lk sm - Lbec1 lbec_ UPC FN POWER WINDOWS Rt Door Sw Page ODY 1440 ODY POWER WINDOWS LR Window Sw Page EXTERIOR LTS Flasher Module Page 8-110/ J10-H J10-E J1-12 J1-E12 J1-E11 &G ORN 3.0 TWP 19 ODY &G ORN 3.0 TWP 19 ODY ORN 0.5 TWP ORN 0.5 TWP ORN 0.5 TWP DSM_T PSM_T TC_VT2 TC_VT2 TC_VT2C PWR SETS Driver Seat Mod Page PWR SETS Pass Seat Mod Page /-1 J5-D 251/-1 J1-F TC 251/-1 J1-C RIUTION (GS) 03 X k33010a 010 PROD 1 CK EU Panel Set: 11 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am schematic sheet1 824 $IVEDWORK/k33010a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 11 K33010a_010_11

108 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-12 1 LEC lk sm - Ubec Main att us ubec_main_batt8 001 UPC FN J-CSE FUSES U1_U1 Main attery us Page //10/ J RED 5.0 TWP 19 JFUSE_LEC PO STEERING COLUMN PRT# PGE 8- IGNSW ECM 020- ETC CRUISE HORN HIRES WER HDLP TRNHZ PSSLOCK TSI STEERWHL STRG Col sm - IGN Sw eau_ign_sw 003 UPC FN IGN IGNITION SWITCH (Page 19) J2- STG COL S RKE WD HTR /C CRUISE S441 S J1-D5 J1-C5 J1-E1 J1-E2 J1-C2 J1-C4 &NP1/NP2/NP RN 41. RN 441 Z_PWR RKES Zab Sw Page 8-44//C -5/2/ RN 441 VSC_IGN &JL4-NR4 RKES Vses/TCS Sw Page 8-44/ TC_SW N NP1/NP8 /NR4 N TRNSFER CSE CNTL tc Sw Page 8-38/C -3/ FRT_HTRP 16F GT INE 16M GT HVC lower Motor Resistor sm Page 8-60/65-1/4 RK_PWR =&03/43/53&TP2#& RN IGN3_TP2 &NP1/NP2/NP RN XLFRT_SW CRUISE_SW 41 CRUISEMDL_PTO RKES Ebc Module Page 8-44//C -1 UX/DUL TT Rly Page TRNSFER CSE CNTL Front xle ct Page 8-38//D -2/1/2 CRUISE CONTROL Cruise Switch Page 8-21/34-2/1 CRUISE CNTL/PTO Cruise Module/PTO Sw Page 8-34/23-2 RIUTION (GS) CK EU Panel Set: X schematic sheet1 824 OJECT ID k33010a $IVEDWORK/k33010a 010 REVISION 010 STGE PROD VERSION 1 LST CHNGED Y 8:44:28 am Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33010a_010_12

109 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D lk sm - Lbec5 lbec_ UPC FN HVCI IGN L541 S Lbec_541 Page J1-D3 J1-D12 Lbec_541 Page lk sm - Lbec541 lbec_ UPC FN &CJ2/CJ RN &CJ2/CJ RN IGN3_HVC 541 QS4_IGN L541 UPLEVEL HVC Hvac Mdl Page 8-65/68-1 QS4 Qs4 Module Page ODY J4-C ODY J &36&Y91 &Z55-Y91 &06&Y RN ODY &Z55-Y91 &36&Y91 S541 &36&Y91 &Z55-Y91 &06&Y RN RN RN TWP 0.35 ODY ODY ODY &06&Y RN ODY &06&Y91 &Z55-Y91 &36&Y91 RN RN RN TWP 0.35 TWP TWP ODY ODY ODY &C36/C RN ODY &36&Y LRHTD_SET &06&Y &Z55-Y91 &06&Y91 RN &06&Y91 &Z55-Y91 ODY &36&Y91 J1-8C 341 S341 lk sm- Rbec Sim rbec_ H FN RTD_RLY RER HETED SET (LUXURY) Left Rear Heated Seat Mod Page RRHTD_SET RR_HVC HVC HVC J8- J8-C RIDE CONTROL Relay-Level Comp Page RER HETED SET (LUXURY) Right Rear - Heated Seat Mod Page RER HVC Rear Hvac Page 8-66/ -1 &CJ2/CJ RN HVC &CJ2/CJ RN HVC &CJ2/CJ RN HVC &CJ2/CJ RN HVC MTR_LMIX MTR_RMIX MTR_DEFR MTR_INLET RTD_IGN3 HVC-DUL ZONE Motor LH Mix Page 8-65/68-3 Panel Set: 13 schematic RIUTION (GS) CK EU 03 X sheet1 824 OJECT ID k33010a HVC-DUL ZONE Motor RH Mix Page 8-65/68-3 HVC-DUL ZONE Motor Defrost Page 8-65/68-2 $IVEDWORK/k33010a 010 REVISION 010 HVC-DUL ZONE Motor Inlet Page 8-65/68-2 STGE PROD VERSION 1 LST CHNGED Y 8:44:28 am Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 13 RIDE CONTROL Rtd Module Page & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33010a_010_13

110 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-14 IGN_SW 142 (Page 3) 10 JFUSE_IGN (Page 11) 342. RED 3.0 TWP 19 C1 IGNITION SWITCH STRT IGN0 CCY C9 5. YEL 3.0 TWP J2-E STG COL 1390 S J2-F STG COL 4 S4 lk sm - Lbec3 lbec_4 001 UPC FN TC IGN IGN0 SEO CCY W/S WER TC CCY RRWPSW_PWR &YE9 J1-3 5 lk sm - Ubec Eng Crank ubec_5 001 UPC FN J1-E8 J1-F8 243 J1-D1 143 J J1-2 RER WER/WSH Rear Wiper Sw Page CRNK WHT TC_IGN PNK J1-C PKEY_IGN0 THEFT DETERRENT Passkey Snsr Page SEO_CCY 243 (Page 18) 143. YEL 1.0 TWP 43. YEL 806 J2-F WUR WUFR J4-3 TC 1020 S lk sm - Ubec Pcm/Tcm ubec_ UPC FN TC_CCY 806 _CRNK J2-F10 J2-E11 &GS INE CONTROLS Pcm Page 8-20//C -4 &L18&M4 WUR &L18/L59/LM/LQ4/LQ9/LR4/LU3 WUFR PNK PNK 251/-1 J4-3 TC 1020 TRNSPWR1 TRNSPWR2 TRNS_PWR TRNSPWR3 WSWP_PWR GS = L18/L59/LQ4/LQ9/LM/LR4/LU3 GS1=&LQ4/LQ9/LM/LR4 CLF = LR4&NC1 RPO LEGEND 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 &GS M4 LCT TRNSMISSION Lct Tcm Page LCT TRNSMISSION Lct Tcm Page INE CONTROLS Pcm Page 8-20//C -4 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION RIUTION (GS) CK EU 03 X k33010a 010 PROD 1 CKMCE Panel Set: 14 schematic sheet1 824 $IVEDWORK/k33010a 010 Tuesday, September 24, 2002 Panel Set: 14 &GS M30/M32/ MT1/MN8 CONTROLS uto Trans Page 8-20//C -6 FRONT WE/WSH Front Wiper Motor Page K33010a_010_14

111 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-15 IGNITION SWITCH STRT RUN CC IGN1 LOCK 2 3. PNK 3.0 TWP 19 J C_RLY 3 S3 3 IGNE S639 3 UC3_UC3 lk sm IGN1 us Page lk sm - Ubec IGN1 us ubec_3a 001 UPC FN HVC /C Enable Relay Page J1-F6 J1-D10 J2-F9-8S PNK 0.35 TWP &TR PNK S639 &TR PNK &TR PNK &TR PNK -TR PNK 0.35 TWP &TR6 -TR6 C_IGNE 639 CLUTCH_MN RHDLP_MTR 639 LHDLP_MTR HDLP_POT HZ_FD 639 NSU_UTO &TR6 INSTRUMENT PNEL CLUSTER STRTING & CHRGINGHEDLMP LEVELING HEDLMP LEVELING HEDLMP LEVELING (EXP) EXTERIOR LIGHTING STRTING & CHRGING Ipc Clutch Switch Rh Hdlp Level Mtr Lh Hdlp Level Mtr Headlamp Leveling Switch Turn/Hazard Sw Nsbu Switch Page Page Page Page Page Page 8-110/ -8 Page OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION RIUTION (GS) CK EU 03 X k33010a 010 PROD 1 CKMCE Panel Set: 15 schematic sheet1 824 $IVEDWORK/k33010a 010 Tuesday, September 24, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33010a_010_15

112 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-16 lk sm IGN1 Page O O UC3_UC J2-D8 J2-E NOTE: DOULE CRIMP NOTE: DOULE CRIMP 539 O2SENS_P 1539 O2SENS_P CONTROLS Htd Oxy Snsr Page 8-20//C -/9-11/ CONTROLS Htd Oxy Snsr Page 8-20//C -/9-11/ OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am ORGNIZTION RIUTION (GS) CK EU 03 X k33010a 010 PROD 1 CKMCE Panel Set: 16 schematic sheet1 824 $IVEDWORK/k33010a 010 Tuesday, September 24, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33010a_010_16

113 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-1 3 TC IGN SIR /U LP SEO IGN lk sm - Ubec IGN1 us ubec_3b 001 UPC FN IGN1_RLY Ign1 Relay Page J1-6 J1- J2-F8 J1-F &C YEL 0.5 TWP PSIR_PWR YEL 0.5 TWP 839 ULP_PWR CKUP LMPS (UTILITY) ack Up Switch Page PNK 0.35 TWP &Z5 39. PNK RP_MDL RER PRKING ID Rpa Module Page SIR(SDM & PSIR) Psir Defeat Sw Ind Page J1-F3 39 lk sm - Mbec MSR/Rr Defog mbec_ UPC FN 39 C_SEOIGN 39 DEFOG_COIL 39. PNK 0.35 TWP &8S8 C SEO 1 Feed Page SEO 39 RKCLTCH RER DEFOG Rear Defog Relay Page TC_IGN1 OS_PWR J8-C J5-D WUF / DI /D J4-4 TC POWER ISRV MIRROR Mbec Page &ZX3 39. PNK RKCLTCH RPO LEGEND GS = L18/L59/LQ4/LQ9/LM/LR4/LU3 GS1=&LQ4/LQ9/LM/LR4 CLF = LR4&NC1 MSR_PWR MNUL SELECTLE RIDE MSR Switch Page RIUTION (GS) 03 X k33010a 010 PROD 1 CK EU Panel Set: 1 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am schematic sheet1 824 $IVEDWORK/k33010a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 1 K33010a_010_1

114 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-18 SEO_CCY (Page 14) 243. YEL SEO1_MEC 4540 (Page 8) &T9 RRFG_RLY ORN 0.5 TWP RER FOG LMP (EXP) Rear Fog Lamp Relay Page J1-F11 J1-F 243 MEC4540 lk sm - Mbec SEO 1 mbec_4540a 001 UPC FN 4540 MEC lk sm - Mbec SEO 1 mbec_4540b 001 UPC FN SEO J8-D Mbec4540 Mbec4540 Page ODY J Mbec4540 Mbec4540 Page HDLNR UPFIT SEO J3- J6- J8-E &9L YEL 0.5 TWP RKCLTCH SEORLY_PWR &06&Y ORN 0.5 TWP ODY &5G4/5X/5Y0/TRW ORN 0.5 TWP RKCLTCH MOILE RDIO Relay Fuse Center Page UPLEVEL RRHTD_T RER HETED SET (LUX) Heated Seat Mod Page SEO_1 SEO Light ar Sw Page 8-110F LHHTD_T 4540 UGDO_P UPLEVEL RER HETED SET (LUX) Heated Seat Mod Page INTERIOR LIGHTING Ugdo Page 8-114/ -1/1 RIUTION (GS) CK EU 03 X Panel Set: 18 schematic sheet1 824 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am k33010a $IVEDWORK/k33010a PROD 1 Tuesday, September 24, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 18 K33010a_010_18

115 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Gas PGE D-19 JFUSE_LEC2 842 (Page 12) J1-E DDM PDM RR ECC lk sm - Lbec2 Page lk sm - Lbec4140 lbec_ UPC FN 842 S S UX PWR lk sm - Lbec2 lbec_ UPC FN 842 L_ LKUNLK_RLY L_ S LFDOOR ODY J3-F J1- J4-D lk sm - Lbec4140 Page ODY J4-G 3040 J1-10 lk sm - Lbec842b Page 8-130/ &YE ORN 0.5 TWP LFDOOR &YE ORN 0.5 TWP 3140 &CJ2 RRECC_PWR DDM_T1 J1-C 4240 RFDOOR J-C ECC RER HVC ECC RR Mdl Page lk sm- Rbec PDM Feed rbec_ H FN J2-14 DDM &YE ORN 0.5 TWP RFDOOR PDM_T UX_RR &06 CIGR LTR/UX PWR Rr Pwr Point Page 8-19//C PDM J2-14 RIUTION (GS) 03 X k33010a 010 PROD1 CK EU Panel Set: 19 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:44:28 am schematic sheet1 824 $IVEDWORK/k33010a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 19 K33010a_010_19

116 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-20 1 Megafuse-15 3 EDU C/DIC ECMRPCV 1 (Page 2) EDU Relay HORN_PWR HDLP_LOW HDLP_HIGH HORNS HEDLPS(W/O HID) HEDLPS(W/O HID) Horn Relay Hdlp Relay-Low Hdlp Relay-High Page Page 8-100/ -1 Page 8-100/ -1 T_CL J2-D9 J2-9 J2-E6 J1-F &L 339. PNK 2.0 TXL 19 &L GR/LK 339 EDU_PWR RPCV_T 2840 C_PWR GlowPlugTerm - MegaFuse UPC FN &L &L MOILE RDIO INE CONTROLS INE CONTROLS Seo Mob Radio Fuse Edu Ecm Page Page 8-20D -4 Page 8-20D -5 INE CONTROLS INE CONTROLS C/DIC Edu Rpcv C Mdl Page 8-20D -4 Page 8-20D -5 Page &L 1042 GLOW_FD &L INE CONTROLS Glow Plug Term Page 8-20D -10 Ring Term-Mob Radio UPC FN =&9L4 2. RED 2.0 FUSELINK 19 CSRYJPR STRTING & CHRGING attery Page SD002 &L 1 T_PWR 2 MORDIO_PWR EDU_PWR2 RPCV_CNTL RIUTION (DIESEL) CK EU 03 X Panel Set: 1 schematic sheet1 551 $IVEDWORK/k33010b 010 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am k33010b 010 PROD & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 1 K33010b_010_01

117 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-21 1 IGN STOP LP CIG LTR W/S WSH HVC ECM (Page 1) RLY_T 2540 WSHPMP_RLY WS_COIL_FD FPMP_RLY 1 U1_U1 STRTING & CHRGING WSH/WE WSH/WE 142 Ubec Sw Rly W/S Wash Rly W/S Wash Rly Page Page Page FUEL SYSTEM Fuel Pump Relay Page Main batt us Page 8-10/102-1/4//8/9 J1-12 J1-F12 J1-D5 J1-5 J2-8 J RED 3.0 &L 640. ORN TWP TWP ORN TWP &L 440. ORN 0.8 TXL IGN_SW (Page 12) 1540 STOP_LPSW DLC_PWR 440 TCM_T _T2 &L EXTERIOR LIGHTING Stop Lamp Sw Page DT LINK CONNECTOR Data Link Connector Page LCT TRNSMISSION Tcm Page CONTROLS Ecm/Pcm Page 8-20D CIG_LTR T_HVC 440 _T1 &L CIGR LIGHTER Cigar Lighter Page 8-19//C -1 HVC Hvac Module Page 8-60/65/68-1 CONTROLS Ecm/Pcm Page 8-20D -6 RIUTION (DIESEL) CK EU 03 X Panel Set: 2 schematic sheet1 551 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am k33010b $IVEDWORK/k33010b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 2 K33010b_010_02

118 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-22 lk sm - Ubec Main att us (DSL) ubec_batt_dsl1 003 UPC FN 1 FOG LPS UX PWR TC TT SEO FGLP_FUSE FOG_T PRKLP_T J2-2 J1-C10 J1-D12 J1-E4 &L&PTO ORN ORN ORN 0.5 TWP PTO_RLY 1040 UX_PWR PKEY_PWR SEO1_MEC &EXPORT (Page 15) PTO Pto Relay Page FRT FOG LMPS FRT FOG LMPS EXT LIGHTING 3440 Fog Relay Com Fog Relay Parklamp Relay Page 8-103/C -1 Page 8-103/C -1Page 8-110/ -1 CIGR LIGHTER ux Pwr Outlets 2 and 3 Page 8-19//C -1 THEFT DETERRENT Passkey Snsr Page TC_VT1 251/-1 J2-12 TC RIUTION (DIESEL) CK EU 03 X Panel Set: 3 schematic sheet1 551 $IVEDWORK/k33010b 010 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am k33010b 010 PROD & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 3 K33010b_010_03

119 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-23 SC INFOTINMENT U1_U1 Main att us Page 8-10/102-1/2//8/ J1-C2 LUXURY NON-LUXURY &Y91&U1S/U42/UE ORN 0.5 TWP S3240 -Y ORN 0.5 TWP J lk sm - Mbec ONSTR/RSE mbec_ H FN S3240 &U42&Y91 &UE1&Y ORN ORN 0.5 TWP 0.5 TWP RSE_PWR &U1S&Y ORN 0.5 TWP CDX_PWR &UE1&Y ORN 0.5 TWP ONST_ INFOJMPR J9-H 3240 INFOJMPR J9-J INFOTINMENT-RSE Rse Module Page REMOTE CD PLYER Cdx Module Page ONSTR - LUXURY Onstar Module Page &UE1-Y ORN 0.5 TWP INFOJMPR &UE1-Y ORN 0.5 TWP INFOJMPR &U42-Y ORN 0.5 TWP INFOJMPR ONST_2 ONST_INFO1 RSE_INFOPWR ONSTR - LUXURY Onstar Module Page ONSTR - NON-LUXURY Onstar Module Page INFOTINMENT-RSE Rse Module Page ONST_INFO2 ONSTR - NON-LUXURY Onstar Module Page RIUTION (DIESEL) CK EU 03 X Panel Set: 4 schematic sheet1 551 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am k33010b $IVEDWORK/k33010b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 4 K33010b_010_04

120 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-24 1 RDIO RDO MP /INFOJMPR J1-D4 J1-F2 LUXURY NON-LUXURY &YE ORN 0.5 TWP J1-C1 &UQ&Y ORN 1.0 TWP RDIO_PWR &UQ&Y ORN 1.0 TWP S340 &U2K/U2L&Y ORN 0.5 TWP D_PWR &UQ3/UQ ORN 1.0 TWP RDIO_PWR INFOT-RDIO SE/UPLEVEL Radio Module Page &UQ-Y ORN 1.0 TWP F GT MXD INFOJMPR 24M GT MXD INFOJMPR J9-E lk sm-radio Infot mbec_ UPC FN INFOT-RDIO PREMIUM Radio Module Page 8-1C -1 INFOT-D/SDRS Dab/Sdars Module Page &UQ&Y ORN 0.5 TWP &UQ-Y ORN 1.0 TWP INFOJMPR &U2K/U2L-Y ORN 0.5 TWP INFOJMPR &06/36/43&UQ-Y ORN 0.5 TWP INFOJMPR 340 CLK_N RS_PWR Z5 CIGR LIGHTER Clock Feed Page 8-19C -2 INFOTINMENT-RS Rsa Module Page 8-1C -3 RDIO_INFOPWR INFOT-RDIO NON-PREMIUM Radio Module Page D_INFOPWR RS_INFOPWR INFOTINMENT-D/SDRS INFOTINMENT-RS Dab/Sdars Module Rsa Module Page Page MP_PWR UPLEVEL INFOTINMENT mplifier Module Page 8-1/C -4 RIUTION (DIESEL) CK EU 03 X Panel Set: 5 schematic sheet1 551 $IVEDWORK/k33010b 010 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am k33010b 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 5 K33010b_010_05

121 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D SEO 2 /C COMP SUNROOF RR DEFOG TREC lk sm - Ubec Main att us (Dsl) ubec_batt_dsl2 003 UPC FN 3340 C_COMP 1640 S1640 /C COMPRESSOR CONT 2340 /C Enable Relay Page J1-E11 J1-11 J1-8 J1-1 J1-C1 &5G4/TRW ORN 3.0 TWP 19 &C ORN 2.0 TWP 19 &NP ORN 2.0 TXL SUNRF_PWR 1640 TC_TT &CF5 &NP1/NP8 /NR4 POWER SUNROOF Power Sunroof Sys Page TRNSFER CSE CONTROL Trec Module Page 8-38/C/D -1 RRDFOG_RLY XFER_CSE J1-E12 J1-D RKCLTCH RKCLTCH lk sm - Mbec SEO 2 (eacon) mbec_ UPC FN RER DEFOG RR Defog Relay Page TRNSFER CSE CONTROL Transfer Case Page 8-38D -1 J8- J SEO_2 &TRW/5G4 ROOF MOUNTED ECON Roof eacon Rly Page 8-110D -1 RIUTION (DIESEL) CK EU Panel Set: 6 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am ORGNIZTION k33010b 010 PROD schematic sheet1 551 $IVEDWORK/k33010b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMCE Tuesday, September 24, 2002 Panel Set: 6 K33010b_010_06

122 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-26 1 SD STUD S J-CSE FUSES 1 STUD lk sm - Ubec Main att us (Dsl) ubec_batt_dsl3 002 UPC FN U1_U1 Main batt us Page /4/8/ CHSSIS EXP (Page 8) 42 EXP Stud1-Trlr UPC FN &Z55&SERIES RED 3.0 GXL 19 CHSSIS RTD_COMP RIDE CONTROL Relay-Level Comp Page DOM D OM &Z55&SERIES10-T RED 3.0 GXL 19 CHSSIS STUD_1 Stud1-Trlr UPC FN EXP =&T89-Z55#&T89&Z55&SERIES RED 3.0 GXL 19 CHSSIS =&Z55&SERIES20-T89#-Z55-T RED RKES bs Motor Page 8-44//C -1 (Page 8) J9-442 S_MTR EXP &Z55&SERIES10&T RED -LU3 STUD_2 &5Y RED 3.0 TWP 19 ECON ODY WIRING PROV Emer Light Relay Page 8-110E -1 Stud 2 Trailer UPC FN TRLR_PWR TRILER WIRING Mbec Trailer (Mbec 4) Page 8-119/ -2/1 Stud 2&5Y UPC FN EMER_RLY 3.0 GXL 19 CHSSIS 3.0 GXL 19 CHSSIS TRLR_DOM TRLR_EXP RIUTION (DIESEL) CK EU Panel Set: 03 X schematic sheet1 551 OJECT ID k33010b $IVEDWORK/k33010b 010 TRLR WIRING (DOMESTIC) Trlr Inline Connector Page REVISION VERSION 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 LST CHNGED Y Tuesday, September 24, 2002 TRLR WIRING (EXPORT) 42 lunt Cut Page :00:12 am ORGNIZTION CKMCE Panel Set: K33010b_010_0

123 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-2 SE MEC1 LOWER J-CSE FUSES 40 lk sm - Ubec Main att us (Dsl) ubec_batt_dsl4 002 UPC FN SF Ign LEC J-CSE FUSES lk sm - Ubec Main att us (Dsl) ubec_batt_dsl5 002 UPC FN U1_U1 U1_U1 642 Main att us Page 8-10/102-1/2/4// Main att us Page 8-10/102-1/2/4// J6- J5- J- J RED &YE RED 5.0 TWP TWP 19 LW_MTR JFUSE_IGN 342 (Page12) 42. RED 5.0 TWP 19 J1- HVC lower Motor Page 8-60/65/68-1/4/3 J S RTDOORS SETS RTDOORS 1440 lk sm - Mbec Seats mbec_ UPC FN 42 LTDOORS 42 TC S42 42 TC TC 2C FLSHER FLSH_MDL lk sm - Lbec1 lbec_ UPC FN S POWER WINDOWS Right Door Sw Page ODY ODY POWER WINDOWS LR Window Sw Page EXTERIOR LTS Flasher Module Page 8-110/ J10-H J10-E J1-12 J1-E12 J1-E11 &G ORN 3.0 TWP 19 ODY &G ORN 3.0 TWP 19 ODY ORN 0.5 TWP ORN 0.5 TWP ORN 0.5 TWP DSM_T PSM_T TC_VT2 TC_VT2 TC_VT2C RIUTION (DIESEL) CK EU Panel Set: 8 03 X schematic PWR SETS Driver Seat Mod Page sheet1 PWR SETS Pass Seat Mod Page OJECT ID k33010b $IVEDWORK/k33010b 010 REVISION VERSION 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 LST CHNGED Y Tuesday, September 24, /-1 11:00:12 am J5-D ORGNIZTION CKMCE Panel Set: 8 251/-1 J1-F 251/-1 J1-C TC K33010b_010_08

124 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-28 JFUSE_LEC2 842 (Page 8) J1-E DDM PDM RR ECC lk sm - Lbec2 Page lk sm - Lbec4140 lbec_ UPC FN 842 S S UX PWR lk sm - Lbec2 lbec_ UPC FN L_ L_ LKUNLK_RLY LFDOOR ODY J3-F J1- J4-D lk sm - Lbec4140 Page 8-10 / -1/ ODY S Lbec842b Page 8-130/ J4-G J1-10 &YE ORN &YE ORN 3140 RRECC_PWR 0.5 LFDOOR TWP 0.5 TWP &CJ2 J1-C ECC RER HVC ECC RR Mdl Page DDM_T RFDOOR J-C lk sm- Rbec PDM Feed rbec_ H FN J-CSE FUSES LEC lk sm - Ubec Main att us (Dsl) ubec_batt_dsl6 002 UPC FN DDM J2-14 &YE ORN 0.5 TWP RFDOOR PDM PDM_T1 J2-14 U1_U1 Main att us 842 Page 8-10/102-1/2/4//8 J RED 5.0 TWP 19 JFUSE_LEC UX_RR &06 CIGR_LTR/UX PWR Rr Pwr Point Page 8-19//C -2 (Page 9) RIUTION (DIESEL) CK EU 03 X Panel Set: 9 schematic sheet1 551 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am ORGNIZTION k33010b $IVEDWORK/k33010b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 9 K33010b_010_09

125 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-29 PO STEERING COLUMN PRT# PGE 8- IGNSW ECM 020- ETC CRUISE HORN HIRES WER HDLP TRNHZ PSSLOCK TSI STEERWHL STRG Col sm - IGN Sw eau_ign_sw 003 UPC FN IGN3 IGNITION SWITCH 300. J2- STG COL S RKE WD HTR /C CRUISE S441 S J1-D5 J1-C5 J1-E1 J1-E2 J1-C2 J1-C RN &JL4-NR4 NP1/NP8 /NR4 &NP1/NP2/NP RN N F GT INE 16M GT Z_PWR 441 VSC_IGN 241 TC_SW 141 FRT_HTRP 41 CRUISEMDL_PTO N 41. RN 0.35 TWP RKES Zab Sw Page 8-44//C -5/2/2 RKES Vses/TCS Sw Page 8-44/ -1 TRNSFER CSE CNTL tc Sw Page 8-38/C -3/2 HVC lower Motor Sw Page 8-60/65-1/4 CRUISE CNTL/PTO Cruise Mdl/Pto Sw Page 8-23/34-2 RK_PWR &NP1/NP2/NP RN XLFRT_SW CRUISE_SW RKES Ebc Module Page 8-44//C -1 TRNSFER CSE CNTL Front xle ct Page 8-38//D -2/1/2 CRUISE CONTROL Cruise Switch Page 8-20D/34 -/1 RIUTION (DIESEL) CK EU Panel Set: X OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am ORGNIZTION k33010b schematic sheet1 551 $IVEDWORK/k33010b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 10 K33010b_010_10

126 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D lk sm - Lbec5 lbec_ UPC FN HVCI IGN L541 S Lbec_541 Page J1-D3 J1-D12 &CJ2/CJ3 &CJ2/CJ RN RN Lbec_541 Page lk sm - Lbec541 lbec_ UPC FN IGN3_HVC L541 HVC Hvac Mdl Page 8-65/ ODY ODY J4-C J4- &Y91&36 &Z55-Y91 &Y91& RN &Z55-Y91 &Y91&36 ODY S541 &Y91&36 &Z55-Y91 &Y91& RN RN RN ODY ODY ODY &Y91& RN ODY &Y91&06 &Z55-Y91 &Y91& RN RN RN ODY ODY ODY &C36/C RN ODY J1-8C 341 S HVC HVC J8- J8-C lk sm- Rbec Sim rbec_ H FN &Y91&36 &Z55-Y91 RTD_RLY &Y91& LRHTD_SET &Y91& RN ODY RER HETED SET (LUXURY) Left Rear Heated Seat Mod Page RRHTD_SET &Y91&06 &Z55-Y91 &Y91&36 RR_HVC &CJ2/CJ RN HVC MTR_LMIX &CJ2/CJ RN HVC MTR_RMIX &CJ2/CJ RN HVC MTR_DEFR &CJ2/CJ RN HVC MTR_INLET RIDE CONTROL Relay-Level Comp Page RER HETED SET (LUXURY) Right Rear - Heated Seat Mod Page RTD_IGN3 RER HVC Rear Hvac Page 8-66/ -1 HVC-DUL ZONE Motor LH Mix Page 8-65/68-3 HVC-DUL ZONE Motor RH Mix Page 8-65/68-3 HVC-DUL ZONE Motor Defrost Page 8-65/68-2 HVC-DUL ZONE Motor Inlet Page 8-65/68-2 RIDE CONTROL Rtd Module Page RIUTION (DIESEL) CK EU Panel Set: X OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am ORGNIZTION k33010b 010 PROD schematic sheet1 551 $IVEDWORK/k33010b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMCE Tuesday, September 24, 2002 Panel Set: 11 K33010b_010_11

127 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-31 IGN_SW 142 (Page 2) 10 JFUSE_IGN (Page 8) 342. RED 3.0 TWP C1 19 IGNITION SWITCH STRT IGN0 CCY C9 5. YEL 3.0 TWP J2-E STG COL 1390 S J2-F STG COL 4 S4 lk sm - Lbec3 lbec_4 001 UPC FN TC IGN IGN0 SEO CCY W/S WER TC CCY &YE9 J1-3 5 CRNK lk sm - Ubec Eng Crank ubec_5 001 UPC FN 530. WHT J1-E8 TWP TC_IGN0 J1-F PNK 1020 PKEY_IGN0 243 J1-D1 SEO_CCY 243 (Page 15) 143 J YEL 1.0 TWP 43 J YEL 0.35 TWP RER WER/WSH Rear Wiper Sw Page J1-C9 806 J2-F WUR WUFR J4-3 TC THEFT DETERRENT Passkey Snsr Page S lk sm - Ubec Pcm/Tcm ubec_ UPC FN TC_CCY J2-F10 J2-E _CRNK &L&M PNK &L&M PNK WUR WUFR 251/-1 J4-3 TC &L 1020 TRNSPWR1 TRNSPWR2 TRNS_PWR1 WSWP_PWR CK EU Panel Set: 03 X schematic INE CONTROLS Pcm Page 8-20D -6 RIUTION (DIESEL) 12 sheet1 551 OJECT ID k33010b $IVEDWORK/k33010b 010 REVISION VERSION 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 &L M4 LCT TRNSMISSION Lct Tcm Page STGE PROD LCT TRNSMISSION Lct Tcm Page INE CONTROLS Ecm Page 8-20D -6 LST CHNGED Y 11:00:12 am ORGNIZTION 1 CKMCE Tuesday, September 24, 2002 Panel Set: 12 FRONT WE/WSH Front Wiper Motor Page K33010b_010_12

128 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-32 IGNITION SWITCH STRT RUN CC IGN1 LOCK 2 3. PNK 3.0 TWP 19 J1-9 3 S3 639 C_RLY 3 IGNE S639 3 FUEL HTR HVC /C Enable Relay Page J1-F6 J1-D10 J2-F9 J2-D8 &TR PNK &L 239. PNK &L 239. PNK -8S PNK &TR PNK S639 &TR PNK &TR PNK -TR PNK GLOW_MOD INE CONTROLS Glow Plug Mod Page 8-20D -10 C_IGNE 639 CLUTCH_MN RHDLP_MTR &TR6 OTHER 639 LHDLP_MTR HDLP_POT HZ_FD 639 NSU_UTO FUEL_HTR &TR6 INSTRUMENT PNEL CLUSTER Ipc Page EXTERIOR LIGHTING Turn/Hazard Sw Page 8-110/ -8 STRTING & CHRGING Nsbu Switch Page STRTING & CHRGING HEDLMP LEVELING HEDLMP LEVELINGHEDLMP LEVELING (EXP) Clutch Switch Rh Hdlp Level Mtr Lh Hdlp Level Mtr Headlamp Leveling Switch Page Page Page Page INE CONTROLS Fuel Heater Page 8-20D -8 RIUTION (DIESEL) CK EU 03 X Panel Set: 13 schematic sheet1 551 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am ORGNIZTION k33010b 010 PROD $IVEDWORK/k33010b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMCE Tuesday, September 24, 2002 Panel Set: 13 K33010b_010_13

129 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-33 3 PCMI TC IGN SIR /U LP SEO IGN lk sm - Ubec IGN1 us (Dsl) ubec_lb_3 001 UPC FN J2-E J1-6 J1- J2-F8 J1-F5 839 ULP_PWR &L 439. PNK MF_P &L 439. PNK 39. PNK 0.35 TWP TC_IGN1 &C YEL 0.5 TWP PSIR_PWR YEL 0.5 TWP CKUP LMPS (UTILITY) ack Up Switch Page PNK 0.35 TWP INE CONTROLS Maf Sensor Page 8-20D -8 WUF / DI /D J4-4 TC SIR(SDM & PSIR) Psir Defeat Sw Ind Page J1-F3 39 lk sm - Mbec MSR/Rr Defog mbec_ UPC FN 39 DEFOG_COIL 39 SEO 39 RKCLTCH RER DEFOG Rear Defog Relay Page J8-C J5-D ECM_IGN1 OS_PWR &ZX3 39. PNK RKCLTCH MSR_PWR INE CONTROLS Ecm Page 8-20D -6 POWER ISRV MIRROR Mbec Page MNUL SELECTLE RIDE MSR Switch Page RIUTION (DIESEL) CK EU 03 X Panel Set: 14 schematic sheet1 551 $IVEDWORK/k33010b 010 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am ORGNIZTION k33010b 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 14 K33010b_010_14

130 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Distribution: Diesel PGE D-34 SEO_CCY (Page 12) 243. YEL 0.35 TWP J1-F11 lk sm - Mbec SEO 1 mbec_4540a 001 UPC FN 4540 MEC4540 SEO1_MEC 4540 (Page 3) &T ORN 0.5 TWP J1-F 4540 EXP RRFG_RLY RER FOG LMP (EXP) Rear Fog Lamp Relay Page lk sm - Mbec SEO 1 mbec_4540b 001 UPC FN 243 SEO Mbec4540 Mbec4540 Page ODY Mbec4540 Mbec4540 Page HDLNR UPFIT SEO J8-D J10- J3- J6- J8-E &9L YEL 0.5 TWP RKCLTCH SEORLY_PWR 4540 LHHTD_T &06&Y ORN UPLEVEL 0.5 TWP ODY RER HETED SET (LUX) Heated Seat Mod Page &5G4/5X/5Y0/TRW ORN 0.5 TWP RKCLTCH MOILE RDIO Relay Fuse Center Page RRHTD_T UPLEVEL RER HETED SET (LUX) Heated Seat Mod Page SEO_1 SEO Light ar Sw Page 8-110F UGDO_P INTERIOR LIGHTING Ugdo Page 8-114/ -1/1 RIUTION (DIESEL) CK EU Panel Set: X OJECT ID REVISION STGE VERSION LST CHNGED Y 11:00:12 am ORGNIZTION k33010b 010 PROD schematic sheet1 551 $IVEDWORK/k33010b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMCE Tuesday, September 24, 2002 Panel Set: 15 K33010b_010_15

131 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-35 TRNSMISSION TCM Module Page INE CONTROLS Pcm/Ecm Page 8-20//CD -12/18/15/12 INE CONTROLS Pcm/Ecm Page 8-20//C/D -12/18/15/12 INE CONTROLS Nsbu Switch Page 8-20//C/D -11/1/14/11 INE CONTROLS Low Oil Level Sw Page 8-20//C -8/14/11 TRNSMISSION TCM Module Page INE CONTROLS Coil sm - Driver Page 8-20C -12 TCM_GND2 VGND_ VGND_C NSU_GND 451 OIL_LVL TCM_GND1 LU3_GND &L18/L&M LK/WHT 0.8 TXL 451. LK/WHT 0.8 TXL 451. LK/WHT 0.8 TXL &M30/M32/M4/MN8/MT LK/WHT &L18/L&M LK/WHT 0.8 TXL INE CONTROLS Pcm/Ecm Page 8-20//C/D -12/18/15/12 INE CONTROLS Pcm/Ecm Page 8-20//C/D -12/18/15/12 INE CONTROLS MF Sensor & IT Page 8-20//C/D - 8/14/11/8 VGND_ VGND_D MF_GND 451. LK/WHT 0.8 TXL 451. LK/WHT 0.8 TXL -L 451. LK/WHT &LU3 5. LK 0.8 TXL S451 ZN3_GS 5 (Page 2) =&L18&NC1#&L18/L59/LM/LQ4/LQ9/LR4/LU3-NM LK/WHT 0.8 TXL &L LK/WHT 1.0 TXL &LU LK/WHT 1.0 TXL &L59/LM/LQ4/LQ9/LR LK/WHT 1.0 TXL 19 &L 451. LK/WHT 1.0 TXL ZN4_L18 (Page 1) Gz 4 Rt - L18 Engine UPC FN Gz 4 Rt - LU3 Engine UPC FN Gz 4 Rt-Gen3 Engine UPC FN Gz 3 Rt - Diesel Eng UPC FN Gz 3 Rt - Gas Eng UPC FN ZONE_04 ZONE_03 M10 M10 GROUND DISTRIUTION CK EU Panel Set: 1 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a schematic sheet1 30 $IVEDWORK/k33014a ET2 1 Wednesday, May 30, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 1 K33014a_003_01

132 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-36 INE CONTROLS Low Coolant Sw Page 8-20/D -12/8 INE CONTROLS Low Coolant Sw Page 8-20/C -18/12 UX/DUL TTERY ux/dual att Solenoid Page /C COMP CTRL /C Clutch Page ELEC THROTTLE ETC Module Page HVC PSI Cycling Sw Page 8-65/68-2 PTO PTO Connector Page ZN5_SPLICE ZN_DIESEL (Page 1) (Page 3) LCOOL_GND1 LCOOL_GND2 TP2_GND CCLTCH_GND ETC_GND PSI_GND PTO_GND &L18/L 5. LK &L59/LM/LQ4/LQ9/LR4/LU3 5. LK =&03/43/53&TP2#&80 5. LK 5. LK 0.8 TXL 19 &L18/JF4/KUP-L 5. LK 5. &L18/L59/L/LM/LQ4/LQ9/LR4/LU3 LK 5. &PTO 0.35 TXL LK 0.8 TXL 5. LK &L 5. LK TXL 19 TXL S5 INE CONTROLS Odd Ign Coils/Driver Page INE CONTROLS Odd Ign Coils/Driver Page INE CONTROLS Even Ign Coils/Driver Page INE CONTROLS Even Ign Coils/Driver Page INE CONTROLS Flex Fuel Sensor Page IGNC_GND1 IGNC_GND3 IGNC_GND2 IGNC_GND4 FLXFL_GND &L18 5. LK 0.8 TXL &L59/LM/LQ4/LQ9/LR4 5. LK 0.8 TXL 19 &L18 5. LK 0.8 TXL &L59/LM/LQ4/LQ9/LR4 5. LK 0.8 TXL 19 COM_ZONE5 &LU3 5. LK 2.0 TXL 19 &L18 5. LK 2.0 TXL 19 &L59 5. LK 0.8 TXL &L59/LM/LQ4/LQ9/LR4 5. LK 2.0 TXL 19 KX_GND5 S5 FOUR WHEEL STEERING (QS4) QS4 Mdl Page (Page 13) 5 (Page 12) -L/LU3 5. LK NYS Gz 5 Rt - Eng Strap UPC FN Gz 5 Rt - LU3 Eng UPC FN Gz 5 Rt - L18 Eng UPC FN Gz 5 Rt - Gen3 Eng UPC FN Gz 5-Ground Strap UPC FN TXL 19 ZN3_GS (Page 1) 6 QS4_GND Gz 6 Rt - Qs4 Gnd UPC FN ZONE_05 GENERTOR_RCKET_GND M10 M10 GROUND DISTRIUTION CK EU 03 X Panel Set: 2 schematic sheet1 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET $IVEDWORK/k33014a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Wednesday, May 30, 2001 ORGNIZTION CKMC03 Panel Set: 2 K33014a_003_02

133 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-3 STRT & CHRGE attery Negative Page STRT & CHRGE attery Negative Page 8-30/ -2 &LU3 -LU3 6 LU3_NEG 6 T_ZONE6 Gz 6 Rt - LU3 att Neg UPC FN Gz 6 Rt - att Neg FN UPC STRT & CHRGE attery Negative Page ZN_DIESEL UX/DUL TTERY ux/dual att Negative Page XFER CSE CONTROL Level sm - Trfr Case Page INE CONTROLS Odd Spark Plugs Page INE CONTROLS Knock Sensor Rh Page STRT & CHRGE Generator sm Page &L/8Y9 T_ZONE 5 (Page 2) &TP2/80 UXT_GND CSE_SW CSE2 KNK_GND1 LT_GND STRT & CHRGE Motor Starter Page 8-30/ -1 INE CONTROLS Even Spark Plugs Page INE CONTROLS Knock Sensor Lh Page 8-20/ -8/14 Gz Rt - Sec att Neg FN UPC Gz 5 Rt - L Eng UPC FN Gz Rt - TP2 att Neg FN UPC STRTER_GND CSE3 KNK_GND2 CSE_SW CSE_1 CSE_2 CSE_3 CSE_4 CSE_5 CSE_6 ZONE_06 ZONE_0 M10 M10 Ground Engine eau_gnd_eng 002 UPC FN GROUND DISTRIUTION CK EU 03 X k33014a 003 ET2 1 Panel Set: schematic sheet1 30 $IVEDWORK/k33014a Wednesday, May 30, 2001 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 3 K33014a_003_03

134 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-38 VSES/S S Pump Page 8-44//C -1 FUEL SNDR/PUMP Secondary Pump Page 8-22H -2 FUEL SNDR/PUMP Secondary Pump Page 8-22G -2 FUEL SNDR/PUMP Secondary Pump Page 8-22E -2 TRILER WIRING Trailer undle Page RIDE CONTROL RTD Compressor Page EXTERIOR LIGHTING Mtr us lock/splice Page 8-110/ -6 TRILER WIRING Trailer undle Page &UY 21 S_MTRGND SEC_GND3 SEC_GND2 SEC_GND1 TRLR_GND4 CLVL_GND RRLP_GND 1 TRLR_GND1 &906&T89&L18/LM/LQ4/LQ9/LR4/LU3-NQZ 21. &906/36&L18/LM/LQ4/LQ9/LR4/LU3-NQZ-T89 LK GXL &03/43/53&L18/LM/LQ4/LQ9/LR4/LU3-NQZ-T89 LK 21. CHSSIS 0.5 GXL &53&SERIES10/SERIES20&T89 LK 1. CHSSIS 0.5 GXL LK CHSSIS 5.0 GXL 19 CHSSIS SU EXPORT SUT & SU DOMESTIC PICKUP Gz 1 Rt - PU Exp Trlr UPC FN M &SERIES10&Z55 =&UY&SERIES10/SERIES20-T89#&06&SERIES10&T89 LK LK 3.0 GXL 1.0 GXL CHSSIS CHSSIS Ring Term-RTD Compr Gz 1 Rt - UT-HD Trlr UPC FN UPC FN TRNSFER CSE CNTL Trec Mdl Page 8-38/C/D -1 XFER CSE CNTL Xfr Case Lever sm Page RIDE SELECT RR Shock Page TRILER WIRING Trailer undle Page EXTERIOR LIGHTING Rear Lps - ussing lock Page 8-110/ -6 ZX3 TREC_GND1 4WD_GND2 1 RRSHOCK_GND TRLR_GND5 RRLP_GND &NP1/NP8/NR4 21. LK &NP2/NP3 21. LK 0.5 GXL 4WDRV TRILER WIRING Trailer undle Page &UY&SERIES LK 1.0 GXL 19 CHSSIS 3.0 GXL 19 4WDRV FUEL SNDR/PUMP Fuel Pump Page 8-22/E/F/G/H -1 XFER CSE CNTL Frt xle Sw sm Page RIDE SELECT LR Shock Page TRLR_GND2 CKUP LMPS ODY WIRING PROV ackup larm Emer Light Gnd Page Page 8-110E -1 -NQ&L NP2/NP3 &5Y0 XFER CSE CNTL Frt xle Sw sm Page 8-38/D -2 NP1/NP8 21 FPMP_GND 21 4WD_GND1 &ZX3 1. LK 0.8 GXL CHSSIS LRSHOCK_GND &SERIES36&T LK 3.0 GXL 19 CHSSIS U_LRM &8S3 16. LK 0.8 GXL CHSSIS 16 EMRLT_GND 21 XLE_GND Gz 21 Rt - S Mdl UPC FN Gz 21 Rt - NP1/NP FN UPC Gz 21 Rt - Fuel Tank UPC FN Gz 21 Rt - 4WD NP UPC FN Gz 1 Rt - Rr Shock UPC FN Gz 16 Rt - Trlr (36 Series) UPC FN Gz 16 Rt - SEO Gnd UPC FN ZONE_21 ZONE_1 ZONE_16 M8 M6 M6 GROUND DISTRIUTION CK EU 03 X Panel Set: 4 schematic sheet1 30 $IVEDWORK/k33014a 003 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Wednesday, May 30, 2001 ORGNIZTION CKMC03 Panel Set: 4 K33014a_003_04

135 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-39 HORN Rh Horn Page EXTERIOR LIGHTING Rh Park/Turn Page HEDLMPS Rh Low eam Page FOG LMPS Rh Fog Lamp Page 8-103/C -1 EXTERIOR LIGHTING Rh Park/Turn Page HEDLMP LEVELING Rh Hdlp Level Mtr Page HEDLMPS (Z5) Rh HID Lp Page EXT LIGHTING (EXP) Rh Repeater Lamp Page HORN_GND2 RHPRK_GND1 RHLOW_GND1 RHFOG_GND1 RHPRK_GND2 RHMTR_GND RHID_GND RHRPTR_LP W/O SNOWPLOW W/ SNOWPLOW =&06&T90 1. &Z5 -Z5 LK VYU-Z5-T90-TR2 0.8 TWP LK &VYU &TR6 LK FWDLP 0.8 TWP 0.5 TWP LK LK LK FWDLP FWDLP 0.8 TWP 0.8 TWP 0.5 TWP FWDLP FWDLP FWDLP HEDLMPS (W/O Z5) Rh High eam (Domestic) DRL FOG LMPS EXTERIOR LIGHTING F M/P 1 EXT LIGHTING (EXP) HEDLMP LEVELING HEDLMPS (W/O Z5) Page F Rh DRL Rh Fog Lamp RF Side Marker SNOPLW Rh RN Gnd Hdlp Level Sw Rh High eam (Export) Page 8-102/ -1 Page Page FWDLP F Page Page Page M M/P &VYU &Z5 &VYU &T65 1. RHHI_GND1 LK 0.8 TWP RHHI_GND2 1 RHDRL_GND RHFOG_GND2 -Z5-TR6 RSDMKR_GND RHTRN_GND HDLPLVL_GND RHHI_GND3 1. FWDLP =&06/36&T96#&53&Y91&T96 &06&TR2 =&03/43&T96#&53&T96-Y91 LK &TR6 &Z5 &TR6-Z &Z5 &Z1 0.5 TWP LK LK LK FWDLP 0.8 TWP &06&TR2 TWP LK LK LK LK TWP 0.5 TWP LK 0.5 TWP FWDLP LK FWDLP TWP 0.5 TWP FWDLP FWDLP FWDLP FWDLP 0.8 TWP FWDLP FWDLP HEDLMPS (W/Z5) Rh High eam Page FWDLP S1 RER FOG LMP (EXP) RR Fog Lp (Utility) Page RER FOG LMP (EXP) RH Fog Lp Page TRILER WIRING Trailer undle Page TRILER WIRING Trailer undle Page &UY UT_RRFOG RER FOG LMP (EXP) LH Fog Lp Page RH_RRFOG 1. LK 1.0 FWDLP TXL 19 STRT & CHRGE Primary att Negative Page 8-30/ -2 RIDE SELECT RF Shock Page ZX3 RIDE SELECT LF Shock Page TRLR_GND3 EXTERIOR LIGHTING Rear Lps - ussing lock Page 8-110/ -6 TRLR_GND6 RER DEFOG RR Defog Grid Page VSES W/S VSES Module Page LH_RRFOG &06&SERIES10&T9 22. LK &53&T9 22. LK GXL GXL CHSSIS CHSSIS &53&T9 22. LK 0.5 GXL CHSSIS Gz 22 RR Fog Lp FOUR WHEEL STRG QS4 Module Case Page UPC FN ZN1_FWDLP 1 (Page 6) Gz 1 Rt - Fwd Lamp FN UPC T_ZONE1 15 RFSHOCK_GND LFSHOCK_GND RRLP_GND 26 DFOG_43 Gz 1 Rt - att Neg UPC FN &ZX3 15. LK 0.8 GXL CHSSIS Gz 15 Rt - Frt Shock UPC FN &UY&SERIES LK 1.0 GXL 19 &SERIES35&T89 CHSSIS 15. LK 3.0 GXL 19 CHSSIS Gz 15 Rt-Trlr (35Series) UPC FN Gz 26 Rt - 43 Defog UPC FN VSES_GND &JL LK 5.0 GXL 19 CHSSIS Gz 28 Rt - VSES UPC FN &NYS CSE_QS4 QS4CSE ZONE_22 M8 ZONE_01 M6 ZONE_15 M8 ZONE_26 M6 ZONE_28 Ground Frame eau_gnd_frame 003 M6 UPC FN GROUND DISTRIUTION CK EU 03 X Panel Set: 5 schematic sheet1 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET $IVEDWORK/k33014a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Wednesday, May 30, 2001 ORGNIZTION CKMC03 Panel Set: 5 K33014a_003_05

136 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-40 RER WER/WSHER RR Washer Pump Mtr Page EXTERIOR LIGHTING Lh Park/Turn Page EXTERIOR LIGHTING LH Park/Turn Page HORN LH Horn Page RRWP_GND LHPRK_GND2 LHPRK_GND1 HORN_GND1 FOG LMPS LH Fog Lamp Page FOG LMPS LH Fog Lamp Page 8-103/C -1 WER/WSHER Washer Pump Mtr Page CLUSTER Low Washer Sw Page W/O SNOWPLOW W/ SNOWPLOW DRL Lh DRL Page 8-102/ -1 LHFOG_GND2 LHFOG_GND1 WSHPMP_GND WSHLVL_GND -VYU-Z5-T90-TR2 1. LK &VYU 1. LK TWP TWP FWDLP FWDLP &VYU &Z5 &T65 1 LHDRL_GND =&03/43&T96#&53&T96-Y91 1. LK =&06/36&T96#&53&Y91&T TWP 1. LK 1. FWDLP 0.8 TWP LK FWDLP 0.5 TWP FWDLP &C25 1. LK 0.5 TWP FWDLP LL INES &YE9 1. LK 0.8 TWP FWDLP W/O LU3 &L18/L59/L/LM/LQ4/LQ9/LR4 1. LK 0.8 TWP FWDLP F F &VYU 1. LK 0.8 TWP FWDLP F M/P 1 SNOPLW FWDLP M M/P &Z5 1. LK 0.8 TWP FWDLP 1. LK 0.5 FWDLP TWP S1 EXT LIGHTING (EXP) LF Side Marker Page EXT LIGHTING (EXP) LH Repeater Lamp Page EXT LIGHTING (EXP) LH Turn Lp Page HEDLMP LEVEING Lh Hdlp Level Mr Page LSDMKR_GND &06&TR2 1. LK 0.8 TWP FWDLP LHRPTR_LP =&06&T90 1. LK 0.8 TWP FWDLP ZN1_FWDLP 1. LK 1.0 TWP FWDLP LHTRN_GND &06&TR2 1. LK 0.8 TWP FWDLP LHMTR_GND &TR6 1. LK 0.5 TWP FWDLP (Page 5) GROUND DISTRIUTION CK EU Panel Set: 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET2 1 6 schematic sheet1 30 $IVEDWORK/k33014a 003 Wednesday, May 30, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 6 K33014a_003_06

137 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-41 TRNSFER CSE Xfer Case Switch Page 8-38/C/D -3/2/3 INTERIOR LIGHTING Hdlp Switch Page 8-114/ -4/3 CLUSTER Cluster Page CMPRT LMPS U/H Lamp Page WDSW_GND CDIM_GND UHLP_GND HDLP_GND2 INTERIOR LIGHTING LH CTSY Lamp Page 8-114/ -3/2 FRT WSH/WE Frt Wiper Motor Page DLC Data Link Conn Page TSI TSI Sw Page CTSY_GND1 MTR_WPGND DLC_GND2 TSI_GND LK LK LK LK LK LK LK 0.35 TWP TWP 1.0 TWP TWP TWP 0.35 S10 LH SPLICE 10. LK 3.0 TWP LK 2.0 TWP LK 3.0 TWP 19 J1-F6 LH_SPLICE (Page 9) PWR DOOR LOCKS Door Lock Relay Page 8-130/ -1 lk sm-lec eau_lbec_ UPC FN MEC_10 (Page 8) 10 DRLK_GND LFDOOR J J J3-D -YE9 10. LK 0.35 TWP LFDOOR &YE9 10. LK 3.0 TWP 19 LFDOOR &U3-YE9 10. LK LFDOOR LFJR_GND DDM_GND LFKLT_GND PWR DOOR LOCKS LF Mini Wedge Page GND J1-4 DDM PWR DOOR LOCKS Drvr Lock Sw Page GROUND DISTRIUTION CK EU 03 X Panel Set: schematic sheet1 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a ET2 1 $IVEDWORK/k33014a 003 Wednesday, May 30, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: K33014a_003_0

138 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-42 INTERIOR LIGHTING INTERIOR LIGHTING INTERIOR LIGHTING ECC RR HVC C-Pillar Dome Lp Map Reading Lps LH Sunshade Illum Frt ux HVC Mdl Page Page 8-114/ -2/1 Page Page ECC RR HVC RR Pcat Sensor sm Page HVC PCT Sensor/Mtr Page MPLP_GND2 DOME_GND2 LVNTY_GND UX_GND RR_PCT RVNTY_GND RRDOME_GND CHMSL_GND1 MDOME_GND ISRVM_GND MPLP_GND1 DOME_GND1 PCT_SENS &03/43/53&YE9-Y LK =&06/36&YE9#&53&Y LK 0.35 TWP HDLNR HDLNR =&06-YE9#&906&YE9-U42 &06&CJ2 LK LK 0.35 TWP 0.35 TWP HDLNR HDLNR &06&CJ2&YE9 10. LK HDLNR &06&YE9-U LK HDLNR =&06/36&YE9#&53&Y LK HDLNR &03/43/ LK 0.5 TWP HDLNR &06/36/43&YE9 =&06/36&YE9#&53&Y91 &CJ LK LK LK 0.5 TWP HDLNR HDLNR HDLNR =&06/36/43-YE9#&03/53 &03/06/36/43/ LK LK TWP 0.35 HDLNR HDLNR HDLNR SPL S10 INTERIOR LIGHTING INTERIOR LIGHTING EXTERIOR LIGHTING INTERIOR LIGHTING ISRV MIRROR INTERIOR LIGHTING INTERIOR LIGHTING RH Sunshade Illum C-Pillar Dm/Rdg Lp CHMSL Module -Pillar Dm/Rdg Lp Mirror/Compass O/H Reading Lps -Pillar Dome Lp Page Page Page Page Page Page 8-114/ -1 Page 8-114/ -2 MSR MSR Switch Page ROOF MTD ECON Light ar Sw Page 8-110C/D/E -1 &5X/5Y0 /TRW/5G4 EMERGENCY LIGHT Emer Light Rly Page 8-110E -1 WRECKER PKG Wrecker Pkg Relay Page 8-110C LK 1.0 TWP 19 HDLNR MSR_GND 10 SEO_GND SEO_EMGND SEO_WCKGND &ZX3 10. LK RKCLTCH &5Y0 10. LK 0.5 TWP RKCLTCH &5X 10. LK 0.5 TWP RKCLTCH MEC_10 10 (Page ) J5-E J1-D9 J8-F RKCLTCH RKCLTCH TRILER WIRING Mbec Page lk sm-mec eau_mbec_ UPC FN INFOJMPR HDLNR 10 TRLR_GNDR J J J J9- J J9- J3-C GROUND DISTRIUTION CK EU 03 X Panel Set: 8 schematic sheet1 30 $IVEDWORK/k33014a 003 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Wednesday, May 30, 2001 ORGNIZTION CKMC03 Panel Set: 8 K33014a_003_08

139 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-43 PWR DOOR LOCKS RF Mini Wedge Page POWER SUNROOF CIGR/UX PWR CIGR/UX PWR CIGR/UX PWR CIGR/UX PWR Power Sunroof PO Front PO Rear Cigar Lighter PO in 1 Page Page Page Page Page PDM_GND GND J1-3 PDM LH_SPLICE 10 (Page ) &YE9 10. LK 3.0 TWP 19 RFDOOR J1-4 PWR DOOR LOCKS Pass Lock Sw Dimming Page YE9 RFKLT_GND J2-F -YE9 10. LK RFDOOR RFJR_GND SIR DIVERSITY NT INE CONTROLS Sdm Impedance Match Mdl Park rake Sw Page 8-4/ -1 Page Page 8-20X -X POWER SUNROOF Sunroof Relay Page &CF5 10. LK 0.5 TWP RFMKR SNRFRLY_GND &CF5 10. LK 2.0 TWP 19 RFMKR SNRF_GND PO_GND2 PO_GND4 CIG_LTRG1 PO_GND3 J6-C EXTERIOR LIGHTING Roof Mkr Lamps Page YE9 RFMKR_GND &U01-YE9 10. LK RFMKR &UQ-Y LK 0.8 TWP CONSOLE &UQ-Y LK 0.8 TWP CONSOLE &UQ-Y LK 0.8 TWP CONSOLE &UQ-Y LK TWP 1.0 CONSOLE 8 8 SD M GT CONSOLE INFOJMPR 40F GT &UQ-Y LK 0.8 TWP CONSOLE C42/CJ2 HVC J4- CJ3 RFDOOR J1-2F _SPL1 10 (Page 16) HVC ir Inlet Mtr sm Page HVC lower Mtr Res sm Page 8-60/65-1/4 RFMKR J1-6C HVC-DUL ZONE Frt lower Mtr Page _SPL2 10 (Page 16) lk sm-rec eau_rbec_ UPC FN J J J J PWR DOOR LOCKS Cargo Lock Sw Page 8-130/ -5/2 &06/E52/ZW9 RIDE CONTROL RTD Module Page FULL FETURE SETS OS Module Page &UQ-Y LK 1.0 TWP INFOJMPR C C M M/P 280 INFOJMPR 4F M/P SPL_PO 10 (Page 16) SIR ROOF MTD ECON SDM Module eacon Gnd Page Page 8-110D -1 ROOF MTD ECON eacon Relay Page 8-110D -1 &03/53 &TRW/5G CRGO_GND RTD_MOD_GND OS_GND SDM_GND ECON_GND SEORLY_GND2 &CJ3 &CJ2 &C42/CJ2 10. LK 3.0 TWP 19 HVC &CJ3 10. LK 3.0 TWP 19 HVC 10 Gz 10 Rt - HVC (CJ2/C42) UPC FN INLET_GND &C42/CJ3 10. LK 3.0 TWP 19 HVC Gz 10 Rt - HVC (CJ3) UPC FN LW_MTRG Gz 10 Rt - HVC (CJ3/C42) UPC FN DIVERSITY NT Diversity nt Mdl Page U84 10 DIVNTGND LW_GND SDM_CGND U84 IMPMODGND XX &Z LK 0.8 TWP ODY &L LK 0.5 TWP ODY Gz 23 Rt - ODY UPC FN LK 0.5 ODY TWP Gz 23 Rt - Seats UPC FN &03/53&TRW/5G LK 0.8 TWP ECON Gz 23 Rt - TRW(03/53/16) UPC FN ZONE_10 DIVNTCSE SDMCSE IMPMODCSE PKRKCSE ZONE_23 M6 M6 GROUND DISTRIUTION CK EU 03 X Panel Set: 9 schematic sheet1 30 $IVEDWORK/k33014a 003 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Wednesday, May 30, 2001 ORGNIZTION CKMC03 Panel Set: 9 K33014a_003_09

140 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL ONSTR Onstar Module Page EXTERIOR LIGHTING Steering Wheel Gnd Page 8-110/ -8 Ground Distribution STEERING WHEEL CONTROLS SWC Page EXTERIOR LIGHTING Flasher sm Page 8-110/ -3 lk sm-lec eau_lbec_ UPC FN ONSTR Onstar Module Page PGE D-44 ONST_INFOGND1 HZ_GND SWC_GND FLS_GND ONST_INFOGND2 &UE1-Y LK/WHT 0.5 TWP INFOJMPR LK/WHT LK/WHT LFDOOR J J &UE1-Y LK/WHT 0.5 TWP INFOJMPR INFOTINMENT-RDIO Radio Page 8-1C RDIO_GND J1-D10 J3-M &U3-YE LK/WHT LFDOOR LFDRLK_GND INFOTINMENT-RSE RSE Module Page RSE_INFOGND J9-L J1-5 J LK/WHT 1.0 TWP POWER LOCKS LF Pwr Door Lck Sw Page &U42-Y LK/WHT 0.5 TWP INFOJMPR J9-K INFOJMPR INFOJMPR J1-C5 J1-5 J1-E LK/WHT 3.0 TWP 19 &U2K/U2L&Y LK/WHT 0.5 TWP D_GND LK/WHT 0.8 TWP LK/WHT 1.0 TWP LK/WHT LK/WHT TC_GND2 TC_GND1 D/SDRS D/SDRS Module Page Gz 18 Rt - MIDCLEN UPC FN ZONE_18 Z18_MDCLEN 1851 (PGE 12) DLC_GND1 DLC Data Link Conn Page HVC_GND HVC HVC Module Page 8-65/68-2 GND J3-6 TC GND J2-6 TC M6 GROUND DISTRIUTION CK EU Panel Set: X OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET2 schematic sheet1 30 $IVEDWORK/k33014a 003 Wednesday, May 30, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 ORGNIZTION CKMC03 Panel Set: 10 K33014a_003_10

141 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-45 INFOTINMENT-RDIO RS Module Page INFOTINMENT-RDIO ose mp 6 Channels Page D/SDRS D/SDRS Module Page CLUSTER C Module Page REMOTE CD PLYER CDX Module Page INFOTINMENT-RDIO RS Module Page 8-1C -3 INFOTINMENT-RDIO ose mp 8 Channels Page 8-1C -4 CRUISE CONTROL Cruise Module Page &UK6&UQ-Y LK/WHT 0.5 TWP CONSOLE SD1851 &UK6&UQ-Y LK/WHT 2.0 TWP 19 CONSOLE &UK6&UQ-Y91 D5 D5 RS_INFOGND &UQ-Y LK/WHT 2.0 TWP 19 INFOJMPR M GT CONSOLE INFOJMPR 40F GT &UK6&UQ-Y91 &UK6&UQ-Y LK/WHT 2.0 TWP 19 CONSOLE J9-M MP_6CH_GND &UQ-UK6-Y91 &UQ-UK6-Y91 &U2K/U2L-Y91 &U1S&US2&Y91 &UQ&Y91 &UQ&Y LK/WHT LK/WHT LK/WHT LK/WHT LK/WHT LK/WHT 2.0 TWP TWP 0.5 TWP TWP TWP 19 CONSOLE INFOJMPR CONSOLE CONSOLE CONSOLE &UQ-UK6-Y91 D_INFOGND TRNSFER CSE CNTL Trec Mdl Page 8-38/D -1 TREC_GND2 &NP1/NP LK/WHT J1-F5 C_GND CDX_GND ONSTR Onstar Mdl Page ONST_GND2 &UE1&Y LK/WHT 0.5 TWP J1-D8 RS_GND SD1851 &UQ&Y LK/WHT 2.0 TWP 19 CONSOLE M GT D5 CONSOLE D5 40F GT &UQ&Y LK/WHT 2.0 TWP 19 PWR DOOR LOCKS Pass Lock Sw Page RFDRLK_GND &U3-YE LK/WHT J1-E5 MP_8CH_GND CRUISE_GND &K LK/WHT INFOJMPR lk sm-mec eau_mbec_ UPC FN J J J1-F8 J1-D5 &U42&Y LK/WHT 0.5 TWP LK/WHT &UE1&Y LK/WHT 0.5 TWP ONST_GND1 ONSTR Onstar Mdl Page &T LK/WHT RRFOG_GND RR Fog Lp (Export) RR Fog Lp Sw Page RSE_GND HDLP_GND1 INFOTINMENT-RSE HEDLMPS RSE Module Headlamp Switch Page Page 8-100/ -2/1 GROUND DISTRIUTION CK EU 03 X Panel Set: 11 schematic sheet1 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET $IVEDWORK/k33014a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Wednesday, May 30, 2001 ORGNIZTION CKMC03 Panel Set: 11 K33014a_003_11

142 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-46 RP RP Dis Sw Page CRGO LMP Fog/Cargo Lp Page 8-116/ -1 RKES RR WER/WSHER VSES/TCS Sw Frt Fog/Rr Wiper Sw Page 8-44/ -1 Page &JL4-NR4/NW ( UT W/ VSES) &06/36&NW&SERIES10/SERIES20-JL4 ( UT W/ NW) &03/43/53&NW&SERIES10/SERIES20-JL4 ( P/U W/ NW) FRT FOG LP EXPORT Frt Fog Lp Sw Page 8-103C -1 RPSW_GND CGO_FOG_GND 1851 VSC_GND RRWPSW_GND FOG_EXPGND &Z LK/WHT &03/36/43/ LK/WHT &06-T LK/WHT &T LK/WHT SC1851 =&03/36/43/53#&06-T89#&T89#&Z5#&JL4-NR4/NW#&03/06/36/43/53&NW&SERIES10/SERIES20-JL LK/WHT 1.0 TWP 19 INTERIOR LIGHTING RR Door Courtesy Lp Page SETS Drv Seat Mdl Page Z18_MDCLEN (PGE 10) PWR DOOR LOCKS PWR WINDOWS RR Miniwedge RR Pwr Window Sw Page 8-130/ -3/4 Page RRDR_CTSYG DSM_GND1 12 &06/36/43 RRJR_GND 12 RRWDO_GND SETS Pass Seat Mdl Page RIDE CONTROL RTD Module Page RER DEFOG RR Defog Grid Page RP RP Diagnostic Conn. Page EXTERIOR LIGHTING CHMSL Mdl Page SETS Pass Seat Mdl Page RP RP Module Page &06/36/43&YE9 12. LK 0.8 TWP RRDOOR &G PSM_GND1 RP_DIGND1 &36&Y LK ODY RTD_GND1 &36&Y LK 2.0 TWP 19 ODY CHMSL_GND2 & LK 0.8 TWP ODY PSM_GND2 &36&G2 12. LK 3.0 TWP 19 ODY S12 12 &36&Y91 RPMDL_GND2 DFOG_36 &36&C LK 3.0 TWP 19 ODY F F M M/P MXD RRDOOR ODY F M/P MXD &06/36/43&YE9 12. LK 2.0 TWP 19 ODY RER DEFOG Rr Wdo Defog Grid Page /53 12 DFOG_0353 &03/53&G2 12. LK 3.0 TWP 19 ODY RR HETED SET Heated Seat Page RRSET_GND &06&Y LK 0.5 TWP ODY D/SDRS D/SDRS Module Page CSE_INFOD & LK 3.0 TWP 19 ODY Gz 12 Rt - RCP FN UPC Gz 12 Rt - RR Door FN UPC Gz 12 Rt - 03/53 Dfg FN UPC Gz 12 Rt - Lux UT FN UPC DCSE ZONE_12 M6 GROUND DISTRIUTION CK EU 03 X Panel Set: 12 schematic sheet1 30 $IVEDWORK/k33014a 003 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Wednesday, May 30, 2001 ORGNIZTION CKMC03 Panel Set: 12 K33014a_003_12

143 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-4 INTERIOR LIGHTING LR Door Courtesy Lp Page &06/43/36&YE9 11 PWR DOOR LOCKS PWR WINDOWS LR Miniwedge LR Pwr Window Sw Page 8-130/ -3/4 Page &06/36/43 LRDR_CTSYG HETED SETS LR Heated Seat Page ROOF MTD ECON eacon Gnd Page 8-110D LRJR_GND LRWDO_GND &06/43 &TRW/5G4 &06/36/43&YE9 11. LK 2.0 TWP 19 LRDOOR LRSET_GND SETS Drv Seat Mdl Page ECON_GND1 ROOF MTD ECON eacon Relay Page 8-110D -1 COM_ZONE5 (Page 2) KX_GND5 (Page 2) F F M M/P MXD LRDOOR ODY F M/P MXD SK JOHN TO VERIFY GUG SIZE &06/36/43 &G2 11 DSM_GND2 SEORLY_GND1 -KX 5. LK 13.0 RE 225 STRP &KX 5. LK.0 RE STRP 1008 &06/36/43&YE9 11. LK 2.0 TWP 19 ODY &06&Y LK 0.5 TWP ODY &06/43&TRW/5G4 26. LK 0.5 TWP ECON Gz 8 Rt - Eng Strap UPC FN Gz 8 Rt - Ground Strap UPC FN Gz 11 Rt - Rear Door FN UPC Gz 11 Rt - Lux UT FN UPC Gz 11 Rt - eacon UPC FN ZONE_08 ZONE_11 M6 M6 GROUND DISTRIUTION CK EU 03 X Panel Set: 13 schematic sheet1 30 $IVEDWORK/k33014a 003 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm ORGNIZTION k33014a 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ ET2 1 CKMC03 Wednesday, May 30, 2001 Panel Set: 13 K33014a_003_13

144 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-48 RER HVC MNUL RR ux Temp ctuator Page RER HVC MNUL Rr HVC Mdl Page RRTEMP_GND RRHVC_GND2 RER HVC MNUL RR ux Mode ctuator Page RER HVC MNUL Rr HVC Mdl Page RRMODE_GND UXLWR_GND2 &C36&C LK &C36&C LK 0.35 TWP UXCLWR UXCLWR 14. LK 3.0 UXCLWR &C36&C69 &C36&C LK TWP 19 UXCLWR C D E F UXCLWR UXCLWR UXCLWR UXCLWR UXCLWR UXCLWR Splsvr-ux HVC splsvr_zone UPC FN GRD ECC RR HVC RR Htr /C Mdl sm Page ECC RR HVC RR ECC Module sm Page RER HVC MNUL RR ux HVC sm Page RER HVC MNUL RR HVC Mdl sm Page RRECC_GND ECCMTR_GND RRHVC_GND1 UXLWR_GND1 &CJ2 14. LK 0.8 TWP UXCLWR &CJ2 14. LK 3.0 TWP 19 UXCLWR &C69-C LK 0.8 TWP UXCLWR &C69-C LK 3.0 TWP 19 UXCLWR Gz 14 Rt - Rear Heater UPC FN ZN14_SPLSVR (Page 15) ZONE_14 M6 Ground ody eau_gnd_body 003 UPC FN OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm ORGNIZTION GROUND DISTRIUTION CK EU 03 X k33014a 003 ET2 1 CKMC03 Panel Set: 14 schematic sheet1 30 $IVEDWORK/k33014a 003 Wednesday, May 30, 2001 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33014a_003_14

145 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-49 THEFT DETER Lift Glass Sw Page PWR DOOR LOCKS Key Cyl Sw Page RER WE/WSH RR Wiper Mtr Page THEFT DETER THEFT DETER RER DEFOG LH-Liftgate jar Sw RH-Liftgate jar Sw Lift Gate Wdo Grid Page Page Page LGLSS_GND CYLKEY_GND RRWPR_GND LGTE_GND RGTE_GND LFGTE_GND &U3&E52 &E LK LK 0.35 TWP ENDGTE ENDGTE &E LK 1.0 TWP ENDGTE &E LK ENDGTE &E LK ENDGTE &E LK 2.0 TWP 19 ENDGTE S14 EXTERIOR LIGHTING CHMSL Module Page 8-110/ -2 CHMSL_GND3 SIDE CONTCT PLTES Lh Door jar Page LHJR_GND INTERIOR LIGHTING Lp Dome D-Pillar Page DOME_GND3 &E LK 3.0 TXL 19 ENDGTE F M/P 280 ENDGTE EGTE EXT 3M M/P EXTERIOR LIGHTING Tailgate Lamp Page _TIL_G SIDE CONTCT PLTE Rh Door jar Page RHJR_GND &E LK CIGR/UX PWR D-Pillar Pwr Point Page 8-19//C -2 RP RP Module Page RP RP Diag Conn Page EGTEXT TXL M GT 280 EGTE EXT ODY 12F GT &906&NYS 14. LK 0.5 TWP ODY RIDE CONTROL RTD Module Page &Z55 PO_GND9 14 RPMDL_GND1 14 RP_DIGND2 14 RTD_GND2 & LK 0.5 TWP ODY & LK 0.8 TWP ODY &ZW9 14. LK 2.0 TWP 19 ODY & LK ODY &E LK 3.0 TWP 19 ODY &ZW9 14. LK 2.0 TWP 19 ODY C D E F ODY ODY ODY ODY ODY ODY Splsvr-ody splsvr_zone UPC FN GRD ZN14_SPLSVR (Page 14) OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm ORGNIZTION GROUND DISTRIUTION CK EU 03 X k33014a 003 ET2 1 CKMC03 Panel Set: 15 schematic sheet1 30 $IVEDWORK/k33014a 003 Wednesday, May 30, 2001 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33014a_003_15

146 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D- PTO PTO Switch Page INTERIOR LIGHTING Glove ox Lp Page SPL_PO FOUR WHEEL STRG QS4 Switch Page (Page 9) PTOSW_GND GOXLP_GND QS4_SWGND CIGR/UX PWR PO Front Trim Page INTERIOR LIGHTING RH CTSY Lamp Page 8-114/ -3/2 HVC HVC Module Page 8-60/65/68-1 PICKUP CREW C/UTILITY SIR PSIR Defeat Sw Page PO_GND1 &PTO 10. LK CTSY_GND2 10 KLT_GND &03/53&YE9 10. LK &06/36/ LK &C LK 0.8 TWP PSIR_GND -UQ-Y LK 0.8 TWP 10. LK &UQ-Y LK 1.0 TWP &NYS 10. LK _SPL1 (Page 9) RH SPLICE SC LK 3.0 TWP 19 CIGR/UX PWR PO Front Page 8-19C -1 PO_GND5 CIGR/UX PWR PO Rear Page 8-19C -1 PO_GND8 CIGR/UX PWR nalog Clock Page 8-19C &Z5 CLCK_GND CIGR/UX PWR PO in2 Page 8-19C -1 PO_GND HETED SETS LR Htd Seat Sw Page LRHTD_GND &Y LK 1.0 TWP F GT CONSOLE 40M GT CIGR/UX PWR PO in1 Page 8-19C -1 PO_GND6 HETED SETS RR Htd Seat Sw Page RRHTD_GND CIGR/UX PWR Cigar Lighter Page 8-19C -1 CIG_LTRG2 INTERIOR LIGTHING Y91 IN Lamp Page 8-114/ LK 2.0 TWP 19 _SPL2 (Page 9) INLP_GND &Z88&UQ&Y LK 0.8 TWP CONSOLE &UQ&Y LK 0.8 TWP CONSOLE &UQ&Y91 &06&Y91 &Y91 &UQ&Y91 &06&Y91 &Z5/Z88&UQ&Y91 &06/36/53&Y LK LK LK LK LK LK LK 0.8 TWP TWP TWP 0.35 TWP TWP TWP CONSOLE CONSOLE CONSOLE CONSOLE CONSOLE CONSOLE CONSOLE SD & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 CONSOLE SPLICE OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm ORGNIZTION GROUND DISTRIUTION CK EU 03 X k33014a 003 ET2 1 CKMC03 Panel Set: 16 schematic sheet1 30 $IVEDWORK/k33014a 003 Wednesday, May 30, 2001 Panel Set: 16 K33014a_003_16

147 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Ground Distribution PGE D-51 J J J HEDLMPS (W/Z5) HEDLMPS (W/O Z5) HEDLMPS Lh High eam LH High eam (Domestic) LH Low eam Page Page Page HEDLMPS (W/O Z5) LH High eam (Export) Page HEDLMPS (Z5) LH HID Lp Page LHHI_GND2 LHHI_GND1 LHLOW_GND1 LHHI_GND3 LHID_GND INE CONTROLS Pcm Page 8-20//C -/8/8 INE CONTROLS Pcm Page 8-20//C -// &Z5 5. LK 0.5 TWP FWDLP -Z5-TR6 5. LK 0.5 TWP FWDLP -Z5 5. LK 0.5 TWP FWDLP &TR6-Z5 5. LK 0.5 TWP FWDLP &TT6 5. LK 0.8 TWP FWDLP 451. LK/WHT 0.8 TXL HTR_GND =&L18&NC1#&L59/LM/LQ4/LQ9/LR4/LU3-NM2 INE CONTROLS Pcm Page 8-20//C -/8/8 HTR_GNDC =&L18/L59/LM/LQ4/LQ9/LR4/LU3-NM LK/WHT 0.8 TXL INE CONTROLS Pcm Page 8-20//C -// RKES rk Press Diff Sw Page 8-44/ -1 DPRES_GND RKES Hydroboost Fluid Lvl Page HYDRO_GND RKES rk Fluid Lvl Sw Page 8-44/C -1 RKFLD_GND SE5 HTR_GND HTR_GNDD &JH1/JH2 5. LK 0.5 GXL CHSSIS &EXPORT 5. LK 0.5 GXL CHSSIS &JH2/JH6/JH 5. LK 0.5 GXL CHSSIS =&Z5#&TT6#&TR6-Z5#-Z5#-Z5-TR6 5. LK 0.8 TWP FWDLP =&L18&NC1#&L59/LM/LQ4/LQ9/LR4/LU3-NM LK/WHT 0.8 TXL =&L18/L59/LM/LQ4/LQ9/LR4/LU3-NM LK/WHT 0.8 TXL J3-E4 CHSSIS FUEL SNDR/PUMP IGN1 Relay (Uh ec) Primary Fuel Relay Page Page 8-22/E/F/G/H -1 J4-4 FWDLP lk sm-uec eau_ubec_5004 UPC FN S451 IGNRLY_GND FPRLY_GND ZN4_L (Page 1) J2- ZN5_SPLICE 5 (Page 2) GROUND DISTRIUTION CK EU 03 X Panel Set: 1 schematic sheet1 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:12:4 pm k33014a 003 ET $IVEDWORK/k33014a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Wednesday, May 30, 2001 ORGNIZTION CKMC03 Panel Set: 1 K33014a_003_1

148 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL uxiliary attery PGE D-52 Uh ec Page STRTING & CHRGING Starter Page IGN3-4WD (Lh ec) Page UXT_TP2 2 UX_T2 241 IGN3_TP2 42. RED 3.0 TXL TPOS 19 Megafuse Ring Term UPC FN Megafuse-40 mega_40a 001 UPC FN 40MPS S RED 5.0 FUSELINK TPOS 19 C C F GT M GT =&03/43/53&TP2#& RN Megafuse Ring Term FN UPC ux att Sol Ring Term UPC FN P 1. RED 13.0 STT 5 TPOS 1. RED 5.0 FUSELINK 19 TPOS Solenoid Swt-ux Stor att aux_relay 001 UPC FN P L + attery aux_bat 001 UPC FN S1 ux att Sol Ring Term FN UPC P N N. LK 13.0 STT 5 TNEG 1. RED 13.0 STT 5 TPOS UXT_GND 5 TP2_GND Gnd Zone # Page Gnd Zone #5 Page UXILIRY/DUL TTERY CK EU 03 X &TP2/80 Panel Set: 1 schematic sheet1 61 $IVEDWORK/k3301a 005 OJECT ID REVISION STGE VERSION LST CHNGED Y 6:18:15 pm k3301a 005 PROD & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Thursday, January 3, 2002 ORGNIZTION CKMC03 Panel Set: 1 K3301a_005_01

149 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-53 TEMP REF LOW C TEMP CSE Sen sm-cool Temp cool_temp_l F LK CL_TMP (Page ) C 2 D E MP 5V REF Sensor - Map map_snsr F 00 OIL PRESS 5V REF Sen - Oil Press snsr_oil_press 003 UPC FN 5V REF EGR HI Valve sm - EGR egr_valve_l L 3 00 LOW REF REF LOW EGR RET EGR POS EGR LO C RN 410. YEL 0.35 TXL J GR J GRN LT J ORN/LK 332. TN/WHT 255. LK 0.35 TXL 205. GR 0.35 TXL 19. PPL J1-54 J1-8 J2-24 J1-60 J2-58 J1-63 J1- J1-41 J WHT J RED J GR 0.35 TXL J1-4 VCC VREF 1 VREF RTN VREF 1 D VREF RTN D VREF 1 C VREF RTN LEGR1 LO IGN VREF 1 ECL TEMP MP TPS PCM INE OIL PRESS V+ VREF RTN C LEGR1 POS LEGR1 HI INE CONTROLS (L18 & M4/MN8/MT1/ML6) 03 X &L18 k33020a CK EU Panel Set: 1 schematic sheet1 384 $IVEDWORK/k33020a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 9:02:41 am ORGNIZTION 009 PROD 1 a CKMC03 Friday, July 19, 2002 Panel Set: 1 K33020a_009_01

150 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-54 RPO LEGEND MT1 = 4L80E UTO TRNS MN8 = 4L80E UTO TRNS (HD) ML6 = MNUL TRNS M4 = LLISON LCT UTO TRNS NM2 = LEDED FUEL EV = EVP EMISSIONS att - QS4 (Uh ec) Page Ign1 - PCMI (Uh ec) Page TISS Trans Input Speed Snsr trans_speed_sen 003 UPC FN TISS Transmission Output Speed Snsr trans_speed_sen 003 UPC FN VENT_SOL PURGE_FD LO HI LO HI PNK Solenoid sm-vent sol_vent 001 8D Valve sm-cnstr Purge can_purge 001 8D VEHICLE SPEED SNSR Toss Page 8-33/ -1/1 LCT TRNSMISSION Rep Toss Page 8-2/ -1 &EV WHT 0.5 GXL CHSSIS &MN8/MT LU DK/WHT 822 VSSLO REP_TOSSHI F F F GT CHSSIS INE 12M GT &MN8/MT RED/LK &ML GRN LT/LK VEHICLE SPEED SNSR Toss Page 8-33/ -1/1 821 VSSHI &M YEL &ML PPL/WHT WHT 428. GRN DK/WHT J2-45 J2-34 J2-36 J2-4 J2-23 J2-22 J2-20 J2-21 LOW HI LOW HI FUEL TNK VENT SOLENOID CNISTER PURGE SOLENOID IR PUMP RELY IR SOLENOID RELY TISS PCM TOSS INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a Panel Set: 2 schematic sheet1 384 $IVEDWORK/k33020a 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :02:41 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_02

151 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-55 INJ1 (Uh ec) Page INJ2 (Uh ec) Page PNK J J F_INJ PNK 0.8 TXL JPR S PNK K F_INJ F M/P 1 SLD INE RIL K 10M M/P 1 SLD PNK 0.8 TXL JPR S PNK 0.8 TXL JPR PNK 0.8 TXL JPR PNK 0.8 TXL JPR PNK 0.8 TXL JPR PNK 0.8 TXL JPR PNK 0.8 TXL JPR PNK 0.8 TXL JPR PNK 0.8 TXL JPR Fuel Injector #3 fuel_inj 001 6M6 X Fuel Injector # fuel_inj 001 6M6 X Fuel Injector #4 fuel_inj 001 6M6 X Fuel Injector #8 fuel_inj 001 6M6 X Fuel Injector #1 fuel_inj 001 6M6 X Fuel Injector #5 fuel_inj 001 6M6 X Fuel Injector #2 fuel_inj 001 6M6 X Fuel Injector #6 fuel_inj 001 6M6 X LK 0.8 TXL JPR 146. PNK/LK 0.8 TXL JPR D D 845. LK/WHT 0.8 TXL JPR F F 8. RED/LK 0.8 TXL JPR G G 145. GRN LT/LK 0.8 TXL JPR H H 844. LU LT/LK 0.8 TXL JPR C C 846. YEL/LK 0.8 TXL JPR E E 88. LU DK/WHT 0.8 TXL JPR M M/P 1 SLD RIL INE 10F M/P 1 SLD LK 0.5 TXL 146. PNK/LK 845. LK/WHT 8. RED/LK 145. GRN LT/LK 844. LU LT/LK 846. YEL/LK 88. LU DK/WHT J1-36 J1-3 J1-6 J1-43 J1-4 J1-44 J1-3 J1- INJECTOR INJECTOR H INJECTOR F INJECTOR C PCM INJECTOR D INJECTOR G INJECTOR E INJECTOR REVISION INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a 009 STGE PROD VERSION 1 LST CHNGED Y schematic sheet1 Friday, July 19, 2002 Panel Set: $IVEDWORK/k33020a 009 9:02:41 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_03

152 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-56 RPO LEGEND MT1 = 4L80E UTO TRNS MN8 = 4L80E UTO TRNS (HD) ML6 = MNUL TRNS M4 = LLISON LCT UTO TRNS RKES LCT Transmission Ebc/Vses Tcm Page 8-44//C -1 Page RKES bs/vses Page 8-44//C -5/2/2 TORQ_REQ TORQ_REQ_TCM 441 CLTCH_SW RKES LCT TRNSMISSION Ebc/Vses Tcm Page 8-44C -1 Page TORQ_MN &MN8/MT TN/LK &M TN/LK TORQ_MN_TCM &MN8/MT ORN/LK &M ORN/LK PO CLUTCH SW PRT# TOP OF TRVL TOP OF TRVL OTTOM OF TRVL LCT TRNSMISSION Tcm Page MIL_REQ PGE K K E &ML6-JF4 48. GR RKCLTCH F GT 1/280 RKCLTCH 12M GT 1/ &ML6-JF4 48. GR Man Cltch Sw-Top Of Trvl #1 cltch_sw_top E F RKES bs/vses (Uh ec-420) Page 8-44//C -5/3/ F GT INE 16M GT (N.C. = OPEN WHEN DEPRESSED) RK_SW STRTING & CHRGING Start Rly Page MNUL Crank Start (Uh ec) Page CLTCH_NTRL _CRNK Ign0 (Lh ec) Page Ign1-PcmI (Uh ec) Page _IGN1 Ecm/Pcm (Uh ec) Page Ecm/Pcm (Uh ec) Page TRNS_PWR1 440 _T2 _T1 STRTING & CHRGING lternator Page STRTING & CHRGING lternator Page LT_LTERM 23 LT_FTERM W/ RKS W/ LCT W/ RKS W/ LCT &M LU DK &ML6 48. GR 420. PPL 806. PPL 440. ORN 0.8 TXL J2-5 J1-13 J2-12 J2-30 J1-35 J1-33 J2-13 J2-18 J2-59 J1-19 J1-5 J1-20 J1-5 J2-15 J2-5 VCC VCC VCC VCC TTERY IGN0 MNGED TORQ REQ TORQ MIL REQUEST TCS DT CTRL/ SPRK RETRD VTS CLUTCH SWITCH TCC RKE SWITCH CRUISE GE CLTCH/NEUT STRT PCM CRNK VIGN 1 VIGN 0 VTT VTT L TERM MON F TERM MON INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a Panel Set: 4 schematic sheet1 384 $IVEDWORK/k33020a 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :02:41 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_04

153 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-5 RPO LEGEND INFOTINMENT Radio Module Page 8-1C -1 SUPPLEMENTL RKE SSIST S Mdl Page 8-44D -1 CLUSTER Cluster Page MT1 = 4L80E UTO TRNS MN8 = 4L80E UTO TRNS (HD) 06 = SUURN/UTILITY M4 = LLISON LCT UTO TRNS 81 RDIO_4KPPM S_4KPPM C_4KPPM &S 81. GRN DK/WHT 81. GRN DK/WHT J1-10 J6-D J1-E6 J10-J J9-C UPFIT ODY INFOJMPR S81 81 lk sm - Mbec VSS (4K PPM) mbec_ UPC FN J1-9 CLUSTER 2ppm Tach Sig Page RTD Lift/Dive Page CLUSTER Malf Ind Lp Page RKES Elec rake Mdl Page 8-44//C -1 STRTING ND CHRGING Starter Rly Page UTO TCH 1101 LIFT_DIVE MLF_LP 182 S_128K 625 STRT_RLY 81. GRN DK/WHT F F F GT INE 16M GT D D F GT INE 16M GT E E F GT CHSSIS INE 12M GT WHT &MN8/MT PNK/WHT 419. RN/WHT 81. GRN DK/WHT 182. YEL/LK 625. YEL/LK J2-44 J2-38 J2-10 J2-35 J1-38 J2-46 J2- J2-49 J1-39 TCH IGN0 IGN0 IGN0 HI IDLE LMP (REV LOCK SOL) FUEL/OIL GUGE LOW OIL LMP PCM CHG OIL LP LIFT DIVE MLFUNCTION INDICTOR LP PRIMRY PPM SECONDRY PPM STRT SOL RLY (LSD) INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a Panel Set: 5 schematic sheet1 384 $IVEDWORK/k33020a 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :02:41 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_05

154 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-58 IGN0 (Lh ec) Page RPO LEGEND MT1-4L80E UTO TRNS MN8-4L80E UTO TRNS (HD) 10 TRNSPWR3 &MN8/MT PNK E SOL SHIFT SOL SHIFT SOL CNTL SOL ENLE SUMP TEMP FORCE MOTOR 1 uto Trans-4L80E-HD SOL PWM SENSOR SOL trans_mn8lct 001 PRESSURE SWITCH MNIFOLD UPC FN C M (MT1/MN8 ONLY) U T S N R P M L C D &MN8/MT YEL/LK &MN8/MT PNK &MN8/MT RED &MN8/MT YEL/LK &MN8/MT LU LT/WHT LCT TRNSMISSION Tcm Page L18 & M4 246 UNMN_TORQ J1-53 &MN8/MT1 &MN8/MT1 &MN8/MT GRN LT RN LU DK &MN8/MT1 20. GR &MN8/MT RED/LK J1-56 J2-48 J2-4 J1-9 J2-42 J2-2 J2-63 J1-1 J1-18 J2-51 J2-6 J2-8 FUEL COMPOSITION SHF SHF SKSHF LP 3-2 SHIFT SK SHIFT TCCEN TRNS MOD RELY TCC CTRL PCM IGN0 IGN0 C TRNS PRESSURE SWITCH MNIFOLD IGN0 VREF RTN F TRNS TEMP VCC FMTR1 HI FMTR1 LOW INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a Panel Set: 6 schematic sheet1 384 $IVEDWORK/k33020a 009 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 9:02:41 am ORGNIZTION CKMC03 Friday, July 19, 2002 Panel Set: 6 K33020a_009_06

155 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-59 PCM POST-OXYGEN SENSOR HETED (2 S2) O2 D LO O2 D HI DEDICTED HTR GND D O2 D HTR CNTRL HI POST-OXYGEN SENSOR HETED (1 S2) O2 C LO O2 C HI DEDICTED HTR GND C O2 C HTR 5V REF RTN E CNTRL HI PRE-OXYGEN SENSOR HETED (2 S1) O2 LO O2 HI DEDICTED HTR GND O2 HTR CNTRL HI PRE-OXYGEN SENSOR HETED (1 S1) O2 LO O2 HI DEDICTED HTR GND O2 HTR CNTRL HI J1-25 J1-65 J1-6 J2-53 J1-28 J1-68 J1-64 J2-52 J1-80 J1-26 J1-66 J1-2 J2-4 J1-29 J1-69 J1-24 J2-2 &NC1 &NC1 &NC1 &NC PPL RED/WHT PPL/WHT RN PPL GRN LT PPL/WHT 0.5 TXL TXL TXL 0.5 TXL 0.5 TXL TXL TXL IGN1-O2 (Uh ec) IGN1-O2 (Uh ec) IGN1-O2 (Uh ec) IGN1-O2 (Uh ec) Page Page Page Page CL_TMP (Page 1) O2SENS_P O2SENS_P O2SENS_P O2SENS_P LK/WHT 451 HTR_GNDD 451 HTR_GNDC 451 HTR_GND 451 HTR_GND &NC1 &NC1 &NC1 &NC TN PNK TN/WHT PNK TN PNK TN PNK TXL TXL Gnd Zone #4 Page D Gnd Zone #4 Page D Gnd Zone #4 Page D Gnd Zone #4 Page D D M M/P 1 SLD INE O2JPR 5F M/P 1 SLD &SERIES36&NC1/NC PPL O2JPR &SERIES36&NC1/NC PNK + - V HI LO E Htd Oxy Snsr(1S2) l18_02_snsr 001 UPC FN (CLIFORNI ONLY) + - V HI LO E Htd Oxy Snsr (2S1) 02_snsr_l UPC FN V HI LO E Htd Oxy Snsr(1S1) 02_snsr_l UPC FN O2JPR TXL D + - V HI LO Htd Oxy Snsr (2S2) 02_snsr_l UPC FN (CLIFORNI ONLY) E &SERIES36&NC1/NC TN 0.5 O2JPR TXL &SERIES36&NC1/NC RED/WHT O2JPR E E F M/P 1 SLD O2JPR INE 5M M/P 1 SLD INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a Panel Set: schematic sheet1 384 $IVEDWORK/k33020a 009 REVISION 009 STGE VERSION LST CHNGED Y PROD 1 Friday, July 19, :02:41 am ORGNIZTION CKMC03 Panel Set: 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_0

156 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-60 SERIL CLSS 2 SERIL CLSS 2 LOW OIL LVL SWITCH IGN0 FLT KNOCK RTN 2 DIFF FLT KNOCK 2 RIGHT HND RES KNOCK LEFT HND RES KNOCK PCM FLT KNOCK RTN 1 DIFF FLT KNOCK 1 VREF RTN G IT VCC MF VCC DEDICTED ELECTRONIC THROTTLE CONTROL ETC ETC J1-58 J1-59 J1-0 J1- J1-10 J1-11 J1-51 J1-49 J1-9 J2-5 J2-25 J2-31 J1-15 J GRN DK 10. YEL 114. RN 0.8 TXL LU LT 0.8 PTFE LU DK 0.8 PTFE TN 0.35 TXL Pcm I (Uh ec) Page SERIL DT LINK Class II - Star Page CL2_ M M 10. YEL TC M GT INE 16F GT TC_ J LK/WHT 0.8 TXL 19 Sw sm - Low Oil Lvl oil_lvl_l UPC FN OIL_LVL N.O. HELD CLOSED T NORML FLUID LEVEL 1 1 Sensor - Knock (Odd) Lh snsr_knock 001 6Y CSE KNK_GND2 Case Gnd Page Sensor - Knock (Even) Rh snsr_knck 001 6Y CSE 552. LK REF LOW 492. YEL TEMP E MF GND C 451 MF_GND 439 MF_IGN D IGN ELEC THROT CNTL Etc Mdl Page MF Sensor & IT maf_iat_snsr 001 6M ETC_ 1061 ETC_ Gnd Zone #4 Page KNK_GND1 451 Mbec Page ELEC THROT CNTL Etc Mdl Page Case Gnd Page INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a Panel Set: 8 schematic sheet1 384 $IVEDWORK/k33020a 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :02:41 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_08

157 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-61 VREF RTN H FUEL SNSR VREF 2 FTP SNSR FTPRESS (SEC) VCC FUEL PULL UP (SEC) FUEL LEVEL SEN IGN1 FUEL PUMP RELY (SEC) FUEL PUMP RELY PCM FUEL LEVEL SEN EST RTN (Page 10) EST RTN EST C EST F EST H EST INJ1 (Uh ec) Page IGN_COIL1 40. LK J J J GR C C J1-46 D D J2-64 &EV 44. GR &EV 890. GRN DK GXL GXL CHSSIS CHSSIS REF LO +5V PRESS 40 FUEL_VREFR 40 FUEL_EV C 890. GRN DK J M GT INE CHSSIS 12F GT J2-3 FUEL SNDR/PUMP Sec Fuel Pump Rly Page 8-22E/G/H -2 FUEL SNDR/PUMP Sec Fuel Sender Page 8-22E/G/H -2 Sensor-Fuel Tank Press fuel_tank_snsr 004 UPC FN J GRN DK/WHT FLVL_SEC J2-3 PRIM_FRLY 1465 SEC_PUMP 1589 J2-54 FLVL_PRIM J2-60 J RN RED E E S RN RED 0.8 TXL 0.8 TXL JPR JPR EST LOW PNK 0.8 TXL JPR C EST CYL_ IGN D SPRK GND PLUG J GRN DK C C GRN DK 0.8 TXL JPR S C EST EST LOW PNK 0.8 TXL JPR CYL_5 IGN D SPRK GND PLUG J LU LT F S F LU LT 0.8 TXL JPR C EST EST LOW PNK 0.8 TXL JPR CYL_3 IGN G G PPL 0.8 TXL JPR D SPRK GND PLUG J PPL S PNK 0.8 TXL JPR C EST EST LOW CYL_ RN RN RN RN 0.8 TXL TXL 0.8 TXL 0.8 TXL 0.8 JPR JPR JPR JPR LK LK LK LK 0.8 TXL 0.8 TXL 0.8 TXL 0.8 TXL JPR JPR JPR JPR IGN S1039 D S H IGN M M/P PNK 0.8 TXL JPR Odd Ignition Coils ign_coil_drv F 4490 SPRK GND PLUG PNK F M/P 1 H INE FUEL SNDR/PUMP Sec Fuel/Pump Page 8-22E/G/H -1 FUEL SNDR/PUMP Fuel Pump Rly Page 8-22E/G/H -1 FUEL SNDR/PUMP Prim Fuel/Pump Page 8-22E/G/H -1 FUEL SNDR/PUMP Fuel Tank Sender Page 8-22E/G/H LK 0.8 TXL JPR M M/P 1 IGN INE F M/P SC5 CSE CSE CSE Spark Plug sp_plug 001 6Y CSE 5 IGNC_GND1 CSE2 Gnd Zone #5 Page Spark Plug Case Page INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU k33020a Panel Set: 9 03 X &L18 schematic sheet1 REVISION 009 STGE PROD VERSION LST CHNGED Y 384 $IVEDWORK/k33020a 009 Friday, July 19, :02:41 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_09

158 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-62 INJ2 (Uh ec) Page PCM IGN_COIL2 EST D EST G EST E EST EST RTN EST RTN CM RTN CM SUP CM POS CRNK SUP CRNK CRNK RTN POS 1 SPRE LSD J2-6 J2-29 J2-28 J2-66 J2-61 J2-39 J1-3 J1-61 J1-2 J1-12 J1-21 PNK RED/WHT GRN DK/WHT LU LT/WHT PPL/WHT RN/WHT F M/P 1 H C F G E INE RED PNK/LK GRN LT YEL/LK H C F G E IGN M M/P PNK RED/WHT GRN DK/WHT LU LT/WHT PPL/WHT RN/WHT TXL 0.8 TXL 0.8 TXL TXL TXL RN/WHT 0.8 TXL LU DK/WHT TXL JPR JPR JPR JPR JPR 0.35 TXL JPR 0.35 S1239 J1-16 Even Ignition Coils ign_coil_drv F PNK 0.8 TXL JPR D IGN C CYL_2 EST PNK 0.8 TXL JPR D IGN C CYL_4 EST PNK 0.8 TXL JPR D IGN C CYL_6 EST PNK 0.8 TXL JPR D IGN C CYL_8 EST HLL EFFECT CM SENSOR C Crank Sensor crank_snsr_l18 UPC FN SPRK PLUG GND S EST LOW SPRK PLUG GND S EST LOW SPRK PLUG GND S EST LOW SPRK PLUG GND RN/WHT RN/WHT RN/WHT RN/WHT 0.8 TXL 0.8 TXL 0.8 TXL 0.8 TXL JPR JPR JPR JPR LK LK LK LK 0.8 TXL 0.8 TXL 0.8 TXL 0.8 TXL JPR JPR JPR JPR S EST LOW S2130 HLL EFFECT CM SENSOR C Cam Sensor cam_snsr_l UPC FN SD5 Spark Plug sp_plug 001 6Y CSE CSE CSE CSE 5. LK 0.8 TXL JPR M M/P 1 IGN INE F M/P CSE3 5 IGNC_GND2 Spark Plug Case Page Gnd Zone #5 Page INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a Panel Set: 10 schematic sheet1 384 $IVEDWORK/k33020a 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :02:41 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_10

159 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-63 PRNDL IGN0 PRNDL IGN0 PRNDL C IGN0 PRNDL P IGN0 /C CLUTCH PCM VREF RTN I VREF 2 SUPPLY /C PRESS SENSOR /C PRESS SWITCH IGN0 FN 2 CTRL RLY TRNSFER CSE (4WD HI-LOW) SWITCH IGN0 SEC HI /C PRESS SWITCH IGN0 V+ V- J1-32 J1-2 J2-62 J1-34 J2-43 J2-80 J1-45 J2-14 J2-55 J2-33 J2-16 J2-11 MT1/MN8 M4 LCT/4L80E TRNSMISSION Tcm Page M4 ML6/MN8 LCT TRNS Tcm Page &MN8/MT1 1. LK/WHT LCT TRNS Tcm Page &MN8/MT1 2. YEL LCT TRNS Tcm Page &MN8/MT1 3. GR LCT TRNS Tcm Page &MN8/MT1 &CJ2/CJ3 &CJ2/CJ3 &CJ2/CJ WHT GRN DK/WHT LK GR RED/LK &M ORN/LK 4WD_LO &M GR/LK &M GR/LK &ML6/MN GR/LK S1694 TCM_ TCM_ TCM_C TCM_P &M4 &M4 &M4 &M LK/WHT YEL GR WHT TXL 0.5 (Page 11) PN_SW &M GR/LK TRNS_CSE M4 MT1/MN8 TRNSF CSE CNTRL Trec Mdl/Trans Case Sw Page 8-38//C/D (Page 11) PN_SW J2- J1- J1-D J1- J1-C C P P/N PO NSU SWITCH PRT# PGE 8- ECM/PCM STRT KUP LP TSI NSU-Sw sm nsbu_switch_l J J J2-D 451 NSU_GND &M4/MN8/MT1 C_CLTCH TP_IN TP_REF 2 5V REF PRESS Sensor-/C Pressure acpres_snsr 002 UPC FN Gnd Zone #4 Page HVC /C Enable Rly Page REF RTN RPO LEGEND NP1 = 2-SPD ELEC SHIFT TRNSF CSE NP2 = 2-SPD MN SHIFT TRNSF CSE NP3 = LL WHEEL DRIVE TRNSF CSE NP8 = 2-SPD PUSH UTTON TRNSF CSE CJ2 = UTO TEMP CONT FRT HVC CJ3 = MN TEMP CONT FRT /C INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a Panel Set: 11 schematic sheet1 384 $IVEDWORK/k33020a 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :02:41 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_11

160 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L18 8.1L Gas PGE D-64 PTO KILL IGN0 PTO FEEDCK PTO GE PTO ENLE SWITCH LOW COOLNT SWITCH IGN0 2 SPD XLE SWITCH IDLE IR CONTROL LOW HI PCM IDLE IR CONTROL HI LOW MDL GND C D Pcm Module eau_pcm 005 UPC FN J J J1-1 J1-52 J1-8 J1-22 J1-30 J2-19 J2-8 J2-9 J2-6 J2- J1-1 J1-40 J2-1 J2-40 &PTO&M4/ML YEL 0.8 TXL &PTO&M4/ML GRN LT 0.8 TXL &NP LK/WHT &M4&PTO 494. LU LT 0.8 TXL &PTO&M4/ML PPL 0.8 TXL 148. GRN LT TRNSF CSE CNTRL Frt xle Sw Page PTO_FDK PTO_ENLE FRT_XLE 451 VGND_ 451 VGND_D PTO PROV Pto Conn Page PTO PROV Pto Enable Page Gnd Zone #4 Page Gnd Zone #4 Page lcool_sw Low Coolant Sw L18/L UPC FN N.O. HOLD CLOSED T NORML FLUID LEVEL PTO DIS PTO_GE 5 LCOOL_GND1 451 VGND_ 451 VGND_C M4 PTO PROV Pto Conn Page PTO PROV Pto Rly Page Gnd Zone #5 Page Gnd Zone #4 Page Gnd Zone #4 Page RPO LEGEND ML6 = MNUL TRNSMISSIONS M4 = LLISON LCT UTO TRNS PTO = POWER TKE OFF NP2 = 2-SPD MN SHIFT TRNSF CSE INE CONTROLS (L18 & M4/MN8/MT1/ML6) CK EU 03 X &L18 k33020a Panel Set: 12 schematic sheet1 384 $IVEDWORK/k33020a 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :02:41 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020a_009_12

161 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-65 UNLEDED (Page ) SEND_RTN 40. LK LOW REF TEMP Sensor sm-cool Temp(Gen3/LU3) cool_temp F C MP 5V REF Sensor - Map map_snsr F 00 LOW REF V REF REF LOW OIL PRESS Sen - Oil Press 003 snsr_oil_press FN UPC YEL 0.5 TXL 59. GR 0.8 TXL 469. ORN/LK 0.8 TXL 205. GR 0.8 TXL 432. GRN LT 0.8 TXL 255. LK 0.8 TXL 332. TN/WHT 0.8 TXL J1-4 J1-48 J2-32 J1-54 J1-8 J2-24 J1-60 J1-63 J2-58 J1- J1-4 J1-41 J1-55 J2-41 J2- VCC VREF 1 VREF RTN VREF 1 D VREF RTN D V+ VREF 1 C VREF 1 VREF RTN LEGR1 LO IGN ECL TEMP MP TPS VREF RTN C PCM (GEN 3) INE OIL PRESS LEGR1 POS LEGR1 HI INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b Panel Set: 1 schematic sheet1 441 $IVEDWORK/k33020b 010 REVISION 010 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :22: am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_01

162 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-66 TISS Trans Input Speed Snsr trans_speed_sen 003 UPC FN RPO LEGEND MT1 = 4L80E UTO TRNS NM2 = EMISSION SYS EXPORT, LEDED FUEL LO HI att - QS4 (Uh ec) Pcm I (Uh ec) INJ1 (Uh ec) INJ1 (Uh ec) Page Page Page Page INJ1 (Uh ec) Page INJ1 (Uh ec) Page VENT_SOL PURGE_FD 1039 L59_INJ1 F_INJ L59_INJ F_INJ PNK 0.5 TXL =&LM/LR4/LQ4/LQ PNK 0.5 GXL 19 Solenoid sm-vent sol_vent 001 8D Fuel Inj #1 fuel_inj 001 6M6 X Fuel Inj #3 fuel_inj 001 6M6 X &EV WHT 0.5 GXL CHSSIS F F F GT CHSSIS INE 12M GT Valve sm-cnstr Purge canister_purge 001 8D &MT1 &MT LU DK/WHT RED/LK VEHICLE SPEED SNSR Toss Page VEHICLE SPEED SNSR Toss Page VSSLO 821 VSSHI =&L LK 0.5 GXL 19 Fuel Inj #1 fuel_inj 001 6M6 X =&LM/LR4/LQ4/LQ LK 0.5 GXL 19 =&L PNK/LK 0.5 GXL 19 Fuel Inj #3 fuel_inj 001 6M6 X =&LM/LR4/LQ4/LQ PNK/LK 0.5 GXL WHT 428. GRN DK/WHT L59 LD/HD L59 LD/HD J2-45 J2-34 J2-4 J2-36 J2-23 J2-22 J2-20 J2-21 J1-36 J1-3 LOW HI LOW HI FUEL TNK VENT SOLENOID CNISTER PURGE SOLENOID IR SOLENOID RELY IR PUMP RELY TISS PCM (GEN 3) TOSS INJECTOR INJECTOR H REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b 010 PROD 1 a CKMC03 Panel Set: 2 schematic sheet1 441 $IVEDWORK/k33020b 010 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_02

163 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-6 INJ1 (Uh ec) INJ1 (Uh ec) INJ1 (Uh ec) INJ1 (Uh ec) INJ2 (Uh ec) INJ2 (Uh ec) INJ2 (Uh ec) INJ2 (Uh ec) INJ2 (Uh ec) INJ2 (Uh ec) INJ2 (Uh ec) Page Page Page Page Page Page Page Page Page Page Page INJ2 (Uh ec) Page L59_INJ5 F_INJ L59_INJ 1039 F_INJ 1239 L59_INJ2 F_INJ L59_INJ F_INJ L59_INJ6 F_INJ L59_INJ F_INJ8 =&LM/LR4/LQ4/LQ PNK 0.5 GXL 19 =&LM/LR4/LQ4/LQ PNK 0.5 GXL 19 =&LM/LR4/LQ4/LQ PNK 0.5 GXL 19 Fuel Inj #5 fuel_inj 001 6M6 X Fuel Inj # fuel_inj 001 6M6 X Fuel Inj #2 fuel_inj 001 6M6 X Fuel Inj #4 fuel_inj 001 6M6 X Fuel Inj #6 fuel_inj 001 6M6 X Fuel Inj #8 fuel_inj 001 6M6 X Fuel Inj #5 fuel_inj 001 6M6 X Fuel Inj # fuel_inj 001 6M6 X Fuel Inj #2 fuel_inj 001 6M6 X Fuel Inj #4 fuel_inj 001 6M6 X Fuel Inj #6 fuel_inj 001 6M6 X Fuel Inj #8 fuel_inj 001 6M6 X =&LM/LR4/LQ4/LQ LK/WHT 0.5 GXL 19 =&LM/LR4/LQ4/LQ9 8. RED/LK 0.5 GXL 19 =&LM/LR4/LQ4/LQ GRN LT/LK 0.5 GXL 19 =&LM/LR4/LQ4/LQ LU LT/LK 0.5 GXL 19 =&LM/LR4/LQ4/LQ YEL/LK 0.5 GXL 19 =&LM/LR4/LQ4/LQ9 88. LU DK/WHT 0.5 GXL 19 =&L LK/WHT 0.5 GXL 19 =&L59 8. RED/LK 0.5 GXL 19 =&L GRN LT/LK 0.5 GXL 19 =&L LU LT/LK 0.5 GXL 19 =&L YEL/LK 0.5 GXL 19 =&L LU DK/WHT 0.5 GXL 19 L59 LD/HD L59 LD/HD L59 LD/HD L59 LD/HD L59 LD/HD L59 LD/HD J1-6 J1-43 J1-4 J1-44 J1-3 J1- INJECTOR F INJECTOR C INJECTOR D PCM (GEN 3) INJECTOR G INJECTOR E INJECTOR INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b Panel Set: 3 schematic sheet1 441 $IVEDWORK/k33020b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION 010 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 3 K33020b_010_03

164 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-68 RPO LEGEND NW = TRCTION CONTROL MG5/MW3 = 5 SPEED MNUL TRNS RKES RKES bs Module bs/vses Crank Start (Uh ec) Ign0 (Lh ec) Page 8-44/ -1 Page 8-44//C -5/2/2 Page Page Ecm/Pcm (Uh ec) Page STRTING & CHRGING lternator Page TORQ_DEL 441 CLTCH_SW _CRNK 1020 TRNS_PWR1 440 _T2 23 LT_FTERM PO CLUTCH SW PRT# PGE 8- STRT PCM/ECM S/VSES DRLK E Man Cltch Sw-Top Of Trvl #1 cltch_sw_top E F RKES bs Module Page 8-44//C -1 RKES bs/vses (Uh ec 420) Page 8-44//C -5/3/1 STRTING & CHRGING Manual Clutch Page Ign1-PcmI (Uh ec) Page Ecm/Pcm (Uh ec) Page STRTING & CHRGING lternator Page TORQ_REQ &MG5/MW3-JF4 48. GR RKCLTCH RK_SW 1433 CLTCH_NTRL _IGN1 20 _T1 25 LT_LTERM K K F GT 1/280 RKCLTCH 12M GT 1/ &NW 464. TN/LK &NW 463. ORN/LK &MG5/MW3-JF4 48. GR 420. PPL 806. PPL 440. ORN 0.8 TXL F GT INE 16M GT &MG5/MW3 48. GR 0.35 TXL J2-5 J1-13 J2-12 J2-30 J1-35 J1-33 J2-13 J2-18 J2-59 J1-19 J1-5 J1-20 J1-5 J2-15 J2-5 VCC VCC VCC VCC TTERY IGN0 DEL TORQ REQ TORQ MIL REQUEST TCS DT CTRL/ SPRK RETRD VTS CLUTCH SWITCH PCM (GEN 3) TCC RKE SWITCH CRUISE GE CLTCH/NEUT STRT CRNK VIGN 1 VIGN 0 VTT VTT L TERM MON F TERM MON REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b 010 PROD 1 CKMC03 Panel Set: 4 schematic sheet1 441 $IVEDWORK/k33020b 010 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_04

165 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-69 INFOTINMENT-RDIO Radio Module Page 8-1C -1 SUPPLEMENTL RKE SSIST S Mdl Page 8-44D -1 CLUSTER 4kppm Signal Page FOUR WHEEL STRG QS4 Module Page RER PRKING ID RP Module Page RDIO_4KPPM S_4KPPM 81 C_4KPPM 81 QS4_4KPPM RP_4KPPM &S 81. GRN DK/WHT 81. GRN DK/WHT &NYS 81. GRN DK/WHT =&Z5 81. GRN DK/WHT ODY J1-10 J6-D J1-E6 J10-J J9-C UPFIT ODY INFOJMPR S81 81 lk sm - Mbec VSS (4K PPM) mbec_ UPC FN J1-9 CLUSTER 2ppm Tach Sig Page RTD Lift/Drive Page CLUSTER Malf Ind Lp Page S/TRC CTRL Elec rake Mdl Page 8-44//C -1 STRTING ND CHRGING Starter Rly Page TCH 1101 LIFT_DIVE MLF_LP 182 S_128K STRT_RLY F GT F INE F 16M GT WHT & PNK/WHT 419. RN/WHT 0.35 TXL TXL TXL J2-44 J2-38 J2-10 J2-35 J1-38 J GRN DK/WHT D D 81. GRN DK/WHT J F GT INE 16M GT E E 182. YEL/LK 0.8 TXL J F GT CHSSIS INE 12M GT YEL/LK J1-39 TCH IGN0 IGN0 IGN0 HI IDLE LMP (REV LOCK SOL) FUEL/OIL GUGE LOW OIL LMP CHG OIL LP LIFT DIVE MLFUNCTION INDICTOR LP PRIMRY PPM SECONDRY PPM STRT SOL RLY (LSD) INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b Panel Set: 5 schematic sheet1 441 $IVEDWORK/k33020b 010 REVISION 010 STGE VERSION LST CHNGED Y PROD 1 Friday, July 19, :22: am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_05

166 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-0 IGN0 (Lh ec) Page RPO LEGEND MT1 = 4-SPD UTO TRNS (4L80E) M30 = 4-SPD UTO TRNS, 4L60E, ELECTRONIC M32 = 4-SPD UTO TRNS, 4L60E-HD, ELECTRONIC 10 TRNSPWR3 &M30/M32/MT PNK E SOL SHIFT SOL SHIFT SOL CNTL SOL ENLE SOL PWM PRESSURE SWITCH MNIFOLD FORCE MOTOR 1 SOL SUMP TEMP SENSOR uto Trans-4L80E/4L60E eau_auto_trans 001 UPC FN C M S T U N R P C D L M M30/M32 MT1 &M30/M32/MT YEL/LK (Page 6) 418 MT1_TRNS &M30/M RN &M30/M32/MT PNK &M30/M32/MT RED &M30/M32/MT LU LT/WHT &M30/M32/MT1 20. GR (Page 6) MT1_TRNS &M30/M32/MT GRN LT &M30/M WHT &M30/M TN/LK &MT RN &M30/M32/MT LU DK &M30/M32/MT RED/LK &M30/M32/MT YEL/LK M30/M32 MT1 J2-48 J2-4 J1-9 J2-42 J2-2 J2-63 J1-1 J1-18 J2-6 J2-8 J2-51 J1-53 SHIFT SHIFT SKSHF LP 3-2 SHIFT SK SHIFT TCCEN TRNS MOD RELY TCC CTRL IGN0 IGN0 TRNS PRESSURE SWITCH MNIFOLD C IGN0 FMTR1 HI FMTR1 LOW PCM (GEN 3) TRNS TEMP VCC VREF RTN F REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b 010 PROD 1 CKMC03 Panel Set: 6 schematic sheet1 441 $IVEDWORK/k33020b 010 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_06

167 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-1 PCM (GEN 3) O2 D HTR CNTRL LO POST-OXYGEN SENSOR HETED (2 S2) O2 D HTR CNTRL HI DEDICTED HETER GND D 5V REF RTN E O2 HTR CNTRL HI PRE-OXYGEN SENSOR HETED (2 S1) O2 HTR CNTRL LO O2 C HTR CNTRL LO POST-OXYGEN SENSOR HETED (1 S2) O2 C HTR CNTRL HI DEDICTED HETER GND C J1-25 J1-65 J1-6 J1-80 J1-66 J1-26 J1-28 J1-68 J1-64 POST_2S2 161 (Page 9/10/11) POST_160 SEND_RTN PRE_1666 PRE_2S1 POST_1S2 POST_ (Page 9/10/11) (Page 1) (Page 9/10/11) (Page 9/10/11) (Page 9/10/11) (Page 9/10/11) 451 HTR_GNDD 451 HTR_GNDC Gnd Zone #4 Page Gnd Zone #4 Page REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b 010 PROD 1 CKMC03 Panel Set: schematic sheet1 441 $IVEDWORK/k33020b 010 Friday, July 19, 2002 Panel Set: 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_0

168 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-2 PCM (GEN 3) O2 C HTR CNTRL LO O2 D HTR LO DEDICTED HETER GND O2 HTR LO O2 HTR CNTRL LO PRE-OXYGEN SENSOR HETED (1 S1) O2 HTR CNTRL HI DEDICTED HETER GND O2 HTR CNTRL LO J2-52 J2-53 J1-2 J2-4 J1-29 J1-69 J1-24 J2-2 POST_3223 PRE_3212 PRE_1S1 PRE_1665 PRE_ (Page 9/10/11) (Page 9/10/11) (Page 9/10/11) (Page 9/10/11) (Page 9/10/11) POST_ (Page 9/10/11) 451 HTR_GND 451 HTR_GND Gnd Zone #4 Page Gnd Zone #4 Page INE CONTROLS - GEN 3 (LD/HD/E85) 03 X &L59/LM/LQ4/LQ9/LR4 k33020b CK EU Panel Set: 8 schematic sheet1 441 $IVEDWORK/k33020b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION 010 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 8 K33020b_010_08

169 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-3 OXY SENSORS FOR GEN3, L59/LM IGN1 - O2 (Uh ec) Page IGN1 - O2 (Uh ec) Page IGN1 - O2 (Uh ec) Page IGN1 - O2 (Uh ec) Page POST_160 (Page ) 15 POST_1668 (Page ) 15 PRE_1666 (Page ) 15 PRE_1665 (Page 8) 15 O2SENS_P O2SENS_P O2SENS_P O2SENS_P =&L59/LM =&L59/LM =&L59/LM =&L59/LM =&L59/LM =&L59/LM =&L59/LM PPL PNK PPL/WHT PNK PPL PNK PPL/WHT =&L59/LM 539. PNK D D D D + - V HI LO Htd Oxy Snsr - RTPOST (2S2) 02_sensor 001 UPC FN V HI LO Htd Oxy Snsr - LTPOST (1S2) 02_sensor 001 UPC FN V HI LO Htd Oxy Snsr - RTPRE (2S1) 02_sensor 001 UPC FN V HI LO Htd Oxy Snsr - LTPRE (1S1) 02_sensor 001 UPC FN C C C C =&L59/LM 161. TN =&L59/LM RED/WHT =&L59/LM TN/WHT =&L59/LM RN =&L59/LM 166. TN =&L59/LM GRN LT =&L59/LM TN =&L59/LM LK/WHT POST_2S2 POST_3223 POST_1S2 POST_2391 PRE_2S1 PRE_3212 PRE_1S1 PRE_3113 (Page ) (Page 8) (Page ) (Page 8) (Page ) (Page 8) (Page 8) (Page 8) INE CONTROLS - GEN 3 (LD/HD/E85) 03 X &L59/LM/LQ4/LQ9/LR4 k33020b CK EU Panel Set: 9 schematic sheet1 441 $IVEDWORK/k33020b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION 010 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 9 K33020b_010_09

170 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-4 OXY SENSORS FOR GEN3 LD, LR4 IGN1 - O2 (Uh ec) Page IGN1 - O2 (Uh ec) Page IGN1 - O2 (Uh ec) Page IGN1 - O2 (Uh ec) Page POST_160 (Page ) 15 POST_1668 (Page ) 15 PRE_1666 (Page ) 15 PRE_1665 (Page 8) 15 O2SENS_P O2SENS_P O2SENS_P O2SENS_P =&LR PPL =&LR PNK =&LR PPL/WHT =&LR PNK =&LR PPL =&LR PNK =&LR PPL/WHT =&LR PNK D D D D + - V HI LO Htd Oxy Snsr - RTPOST (2S2) 02_sens 001 UPC FN V HI LO Htd Oxy Snsr - LTPOST (1S2) 02_sens 001 UPC FN V HI LO Htd Oxy Snsr - RTPRE (2S1) 02_sens 001 UPC FN V HI LO Htd Oxy Snsr - LTPRE (1S1) 02_sens 001 UPC FN C C C C =&LR4 =&LR TN RED/WHT =&LR TN/WHT =&LR RN =&LR TN =&LR GRN LT =&LR TN =&LR LK/WHT POST_2S2 POST_3223 POST_1S2 POST_2391 PRE_2S1 PRE_3212 PRE_1S1 PRE_3113 (Page ) (Page 8) (Page ) (Page 8) (Page ) (Page 8) (Page 8) (Page 8) REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b 010 PROD 1 CKMC03 Panel Set: 10 schematic sheet1 441 $IVEDWORK/k33020b 010 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_10

171 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-5 IGN1 - O2 (Uh ec) Page OXY SENSORS FOR GEN3 HD, LQ4/LQ9 15 POST_160 (Page ) O2SENS_P =&LQ4/LQ PPL =&LQ4/LQ PNK D D M M/P 1 SLD INE O2JPR 4F M/P 1 SLD POST_1668 (Page ) IGN1 - O2 (Uh ec) Page PRE_1666 (Page ) IGN1 - O2 (Uh ec) Page PRE_1665 (Page 8) IGN1 - O2 (Uh ec) Page O2SENS_P O2SENS_P O2SENS_P =&SERIES36&LQ4&NC1/NC8/NF PPL =&SERIES36&LQ4&NC1/NC8/NF PNK O2JPR O2JPR =&LQ4/LQ PPL/WHT =&LQ4/LQ PNK =&LQ4/LQ PPL =&LQ4/LQ PNK =&LQ4/LQ PPL/WHT =&LQ4/LQ PNK D D D D + - V HI LO Htd Oxy Snsr - RTPOST (2S2) 02_sens 001 UPC FN V HI LO Htd Oxy Snsr - LTPOST (1S2) 02_sens 001 UPC FN V HI LO Htd Oxy Snsr - RTPRE (2S1) 02_snsr 002 UPC FN V HI LO Htd Oxy Snsr - LTPRE (1S1) 02_snsr 002 UPC FN C C E E 161. =&SERIES36&LQ4&NC1/NC8/NF2 TN =&SERIES36&LQ4&NC1/NC8/NF2 =&LQ4/LQ9 =&LQ4/LQ9 RED/WHT TN/WHT RN O2JPR 0.5 TXL O2JPR F M/P 1 SLD C O2JPR C INE 4M M/P 1 SLD POST_1S2 POST_ (Page ) (Page 8) =&LQ4/LQ TN =&LQ4/LQ RED/WHT TXL TXL =&LQ4/LQ TN PRE_2S1 (Page ) =&LQ4/LQ GRN LT PRE_3212 (Page 8) =&LQ4/LQ TN PRE_1S1 (Page 8) (Page 8) =&LQ4/LQ LK/WHT PRE_3113 POST_2S2 (Page ) POST_3223 (Page 8) INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b Panel Set: 11 schematic sheet1 441 $IVEDWORK/k33020b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION 010 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 11 K33020b_010_11

172 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-6 SERIL CLSS 2 SERIL CLSS 2 LOW OIL LVL SWITCH IGN0 FLT KNOCK RTN 2 DIFF FLT KNOCK 2 RIGHT HND RES KNOCK 2 LEFT HND RES KNOCK 1 FLT KNOCK RTN 1 DIFF FLT KNOCK 1 PCM (GEN 3) VREF RTN G IT VCC MF VCC DEDICTED ELECTRONIC THROTTLE CONTROL ETC ETC J1-58 J1-59 J1-0 J1- J1-10 J1-11 J1-51 J1-49 J1-9 J2-5 J2-25 J2-31 J1-15 J1-14 SERIL DT LINK Class II Page CL2_ GRN DK 10. YEL M M 10. YEL 0.35 TXL M GT INE 16F GT CLSS2-2 (WUR) J3-1 TC TC_ 114. RN 0.5 TXL 451. LK/WHT Sw sm - Low Oil Lvl oil_lvl_sw 001 UPC FN N.O. HELD CLOSED T NORML FLUID LEVEL 186. LU LT 496. LU DK CSE Sensor - Knock sensor_knock 001 UPC FN LK 0.5 TXL 42. TN REF LOW 492. YEL TEMP E MF GND C Pcm I (Uh ec) Page MF_IGN D IGN MF Sensor & IT maf_iat_snsr 001 6M ETC_ ELEC THROT CNTL Etc Mdl Page ETC_ ELEC THROT CNTL Etc Mdl Page OIL_LVL 451 MF_GND Gnd Zone #4 Page KNK_GND2 Case Gnd Page Mbec Page REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b 010 PROD 1 CKMC03 Panel Set: 12 schematic sheet1 441 $IVEDWORK/k33020b 010 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_12

173 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D- VREF RTN H FUEL SENSOR VREF FTPRESS FTPRESS (SEC) VCC FUEL PULL UP IGN1 (SEC) FUEL LEVEL SEN FUEL PUMP RELY (SEC) FUEL PUMP RELY PCM (GEN 3) FUEL LEVEL SEN EST RTN EST H EST C EST F EST J1-23 J1-46 J2-64 J1-5 J2-3 J2-9 J2-3 J2-54 J2-60 J2-69 J2-2 J2-68 J LK J J 40 FUEL_VREFR GR GRN DK TXL TXL M GT C D INE C D CHSSIS 12F GT &EV 44. GR 0.5 GXL CHSSIS C +5V PRESS REF LO 40 FUEL_EV &EV 890. GRN DK 0.5 GXL CHSSIS Sensor-Fuel Tank Press fuel_tank_snsr 004 UPC FN GRN DK/WHT &LQ4/LQ9 FUEL SNDR/PUMP Sec Fuel Pump Rly Page 8-22E/G/H -2 FUEL SNDR/PUMP Sec Fuel Sender Page 8-22E/G/H -2 PRIM_FRLY FUEL SNDR/PUMP Fuel Pump Rly Page 8-22E/F/G/H/I FLVL_SEC 1465 SEC_PUMP FUEL SNDR/PUMP Fuel Tank Sender Page 8-22E/F/G/H/I -1 &LQ4/LQ9 FLVL_PRIM RN 0.8 TXL LU LT 0.8 TXL E RTN F 19 EST H CYLINDER # RED 0.8 TXL 19 EST C CYLINDER # G GRN DK 0.8 TXL 19 C EST F CYLINDER # PPL 0.8 TXL 19 EST CYLINDER #1 INJ1 (Uh ec) Page IGN_COIL PNK 0.8 TXL 19 H IGN Ign Coil/Driver-Odd ign_coil_odd 001 UPC FN FUEL SNDR/PUMP Prim Fuel/Pump Page 8-22E/F/G/H -1 FUEL SNDR/PUMP Sec Fuel/Pump Page 8-22E/F/G/H -1 SPRK PLUG #3 SPRK PLUG # SPRK PLUG #5 SPRK PLUG #1 GND IGNC_GND3 Gnd Zone #5 Page REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b 010 PROD 1 CKMC03 Panel Set: 13 schematic sheet1 441 $IVEDWORK/k33020b 010 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_13

174 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-8 PCM (GEN 3) EST RTN EST EST G EST D EST E CM RTN CM SUP CM POS CRNK SUP CRNK CRNK RTN POS 1 SPRE LSD 2 J2-61 J2-66 J2-29 J2-6 J2-28 J2-39 J1-3 J1-61 J1-2 J1-12 J1-21 J RN/WHT 0.8 TXL GRN DK/WHT 0.8 TXL LU LT/WHT 0.8 TXL 19 INJ2 (Uh ec) Page RED 632. PNK/LK 186. GRN LT YEL/LK 15 IGN_COIL PPL/WHT 0.8 TXL RED/WHT 0.8 TXL PNK 0.8 TXL RN/WHT LU DK/WHT E G C F H C C RTN EST CYLINDER #8 EST G CYLINDER #4 EST D CYLINDER #2 EST E CYLINDER #6 IGN Ign Coil/Driver - Even ign_coil_even 001 UPC FN HLL EFFECT CM SENSOR Cam Sensor cam_snsr_gen3 001 UPC FN HLL EFFECT CM SENSOR Crank Sensor crank_snr 001 UPC FN GND SPRK PLUG #8 SPRK PLUG #4 SPRK PLUG #2 SPRK PLUG #6 5 IGNC_GND4 Gnd Zone #5 Page INE CONTROLS - GEN 3 (LD/HD/E85) 03 X &L59/LM/LQ4/LQ9/LR4 k33020b CK EU Panel Set: 14 schematic sheet1 441 $IVEDWORK/k33020b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION 010 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 14 K33020b_010_14

175 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-9 PRNDL IGN0 PCM (GEN 3) TRNSFER CSE VREF /C PRESS /C PRESS FN 2 (4WD HI-LO) SEC HI C PRNDL PRNDL C PRNDL P /C CLUTCH RTN I VREF 2 SWITCH SENSOR CTRL RLY SWITCH PRESS SWITCH IGN0 IGN0 IGN0 IGN0 IGN0 IGN0 V+ V- J1-32 J1-2 J2-62 J1-34 J2-43 J2-80 J1-45 J2-55 J2-14 J2-33 J2-16 J2-11 &M30/M32/MT1 2. YEL &M30/M32/MT1 6. WHT 459. GRN DK/WHT &CJ2/CJ LK &CJ2/CJ GR &CJ2/CJ RED/LK C_CLTCH &M30/M32/MT1 1. LK/WHT &M30/M32/MT1 3. GR HVC /C Enable Rly Page TP_IN TP_REF 2 5V REF PRESS Sensor-/C Pressure acpres_snsr 002 UPC FN &NP1/NP2/NP GR/LK J2- J1- J1-D J1- J1-C REF RTN P/N P C PO NSU SWITCH PRT# PGE 8- ECM/PCM STRT KUP LP TSI NSU-Sw sm nsbu_sw_gen J J J2-D 451 NSU_GND TRNS_CSE Gnd Zone #4 Page TRNSF CSE CNTRL Trec Mdl/Trnsf Case Sw Page 8-38//C/D -1 REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION INE CONTROLS - GEN 3 (LD/HD/E85) CK EU 03 X &L59/LM/LQ4/LQ9/LR4 k33020b 010 PROD 1 CKMC03 Panel Set: 15 schematic sheet1 441 $IVEDWORK/k33020b 010 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020b_010_15

176 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: GEN 3 PCM PGE D-80 FUEL COMP IGN0 FFS PTO KILL IGN0 PTO FEEDCK PTO GE PCM (GEN 3) COOLNT FRONT XLE PTO LOW ENLE UPC SWITCH IGN0 SWITCH SWITCH MDL GND IDLE IR IDLE IR CONTROL CONTROL LOW HI HI LOW C D Gen 3 Pcm Module eau_gen3 006 FN J J J1-56 J1-1 J1-52 J1-8 J1-22 J1-30 J2-19 J2-8 J2-9 J2-6 J2- J1-1 J1-40 J2-1 J2-40 PCMI (Uh ec) Page FLX_FUEL 148. GRN LT &NP LK/WHT =&L WHT TRNS CSE CNTRL Frt xle Sw Page VGND_ 451 VGND_C C Snsr sm - Flex Fuel flex_fuel_snsr 001 UPC FN E85 ONLY FRT_XLE Low Coolant Sw - Gen3/Lu3 sw_lcool 001 UPC FN Gnd Zone #4 Page Gnd Zone #4 Page Gnd Zone #4 Page VGND_ 451 VGND_D Gnd Zone #4 Page FLXFL_GND 5 LCOOL_GND2 Gnd Zone #5 Page Gnd Zone #5 Page INE CONTROLS - GEN 3 (LD/HD/E85) 03 X &L59/LM/LQ4/LQ9/LR4 k33020b CK EU Panel Set: 16 schematic sheet1 441 $IVEDWORK/k33020b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:22: am ORGNIZTION 010 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 16 K33020b_010_16

177 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-81 TEMP REF LOW Sensor sm-cool Temp(Gen3/LU3) cool_temp F LK COOL_T MP 5V REF C Sensor - Map map_snsr F 00 (Page 6) LOW REF TPS 5V REF Sensor - TPS tps_snsr_lu F 00 5V REF OIL PRESS Sen - Oil Press snsr_oil_press 003 UPC FN LOW REF REF LOW YEL 432. GRN LT -NW 201. GR -NW 252. LK 205. GR 59. GR 469. ORN/LK -NW 41. LU DK 332. TN/WHT 255. LK 0.8 TXL J1-4 J1-48 J2-32 J1-54 J1-8 J2-24 J1-60 J2-58 J1-63 J1- J1-41 J1-55 J2-41 J2- J1-4 VCC VREF 1 VREF RTN VREF 1 D VREF RTN D VREF 1 C VREF RTN LEGR1 LO IGN VREF 1 ECL TEMP MP TPS PCM INE OIL PRESS V+ VREF RTN C LEGR1 POS LEGR1 HI INE CONTROLS (LU3 &M30/MG5) CK EU 03 X &LU3 k33020c Panel Set: 1 schematic sheet1 310 $IVEDWORK/k33020c 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :32:09 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020c_009_01

178 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-82 att - QS4 (Uh ec) Page IGN1 Rly - PCMI (Uh ec) Page VENT_SOL PURGE_FD 439. PNK 0.5 TXL Solenoid sm-vent sol_vent 001 8D Valve sm-cnstr Purge can_purge 001 8D VEHICLE SPEED SNSR Toss Low Page VEHICLE SPEED SNSR Toss Hi Page &EV WHT 0.5 GXL CHSSIS 822 VSSLO 821 VSSHI F F F GT CHSSIS INE 12M GT WHT 0.35 TXL 428. GRN DK/WHT J2-45 J2-34 J2-36 J2-4 J2-23 J2-22 J2-20 J2-21 LOW HI LOW HI FUEL TNK VENT SOLENOID CNISTER PURGE SOLENOID IR PUMP RELY IR SOLENOID RELY TISS PCM TOSS INE CONTROLS (LU3 &M30/MG5) 03 X &LU3 k33020c CK EU Panel Set: 2 schematic sheet1 310 $IVEDWORK/k33020c & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION 009 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 2 K33020c_009_02

179 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-83 Eng 1 (Uh ec) Page Eng 1 (Uh ec) Page Eng 1 (Uh ec) Eng 2 (Uh ec) Eng 2 (Uh ec) Eng 2 (Uh ec) Page Page Page Page F_INJ LU3_INJ3 F_INJ5 F_INJ LU3_INJ4 F_INJ PNK PNK PNK 0.5 TXL PNK E D H J L Inj Fuel sm - LU3 inj_fuel_lu3 001 UPC FN Fuel Injector #3 fuel_inj 001 6M6 X Fuel Injector #4 fuel_inj 001 6M6 X Fuel Inj #1 fuel_inj 001 6M6 X Fuel Inj #5 fuel_inj 001 6M6 X Fuel Inj #2 Fuel Inj #6 fuel_inj 001 fuel_inj 001 6M6 X0036 6M6 X F C G K M 144. LK 146. PNK/LK 845. LK/WHT 145. GRN LT/LK 844. LU LT/LK 846. YEL/LK J1-36 J1-3 J1-3 J1-43 J1-6 J1-44 J1-4 J1- INJECTOR INJECTOR H INJECTOR E INJECTOR C PCM INJECTOR F INJECTOR G INJECTOR D INJECTOR INE CONTROLS (LU3 &M30/MG5) CK EU 03 X &LU3 k33020c Panel Set: 3 schematic sheet1 310 $IVEDWORK/k33020c & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION 009 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 3 K33020c_009_03

180 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-84 RPO LEGEND MG5-5-SPEED MN TRNS RKES bs/vses Page 8-44//C -5/2/2 CRUISE CONTROL Cruise Module Page Crank Start (Uh ec) Page IGN0 (Lh ec) Page att - PCM (Uh ec) Page STRTING & CHRGING lternator Page CLTCH_SW CRUISE CRNK 1020 TRNS_PWR1 440 _T2 23 LT_FTERM PO CLUTCH SW PRT# PGE 8- TOP OF TRVL 20-4 TOP OF TRVL 44-2 OTTOM OF TRVL 30-1 E Man Cltch Sw-Top Of Trvl #1 cltch_sw_top E F &MG5-JF4 48. GR RKES bs/vses (Uh ec 420) Page 8-44//C -5/3/1 STRTING & CHRGING Manual Clutch Sw Page Ign1 Rly - PCMI (Uh ec) Page att-pcm (Uh ec) Page STRTING & CHRGING lternator Page RKCLTCH K K F GT 1/280 RKCLTCH 12M GT 1/ RK_SW 1433 CLTCH_NTRL 439 _IGN1 _T1 25 LT_LTERM &MG5-JF4 48. GR F GT INE 16M GT PPL 396. LU LT/LK 806. PPL 440. ORN 0.8 TXL &MG5 48. GR J2-5 J1-13 J2-12 J2-30 J1-35 J1-33 J2-13 J2-18 J2-59 J1-19 J1-5 J1-20 J1-5 J2-15 J2-5 VCC VCC VCC VCC TTERY IGN0 DEL TORQ REQ TORQ MIL REQUEST TCS DT CTRL/ SPRK RETRD VTS CLUTCH SWITCH TCC RKE SWITCH CRUISE GE CLTCH/NEUT STRT PCM CRNK VIGN 1 VIGN 0 VTT VTT L TERM MON F TERM MON INE CONTROLS (LU3 &M30/MG5) 03 X &LU3 k33020c CK EU Panel Set: 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION PROD 1 CKMC03 4 schematic sheet1 310 $IVEDWORK/k33020c 009 Friday, July 19, Panel Set: 4 K33020c_009_04

181 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-85 INFOTINMENT-RDIO Radio Module Page 8-1C -1 SUPPLEMENTL RKE SSIST S Mdl Page 8-44D -1 CRUISE CONTROL Cruise Module Page CLUSTER 4kPPM Signal Page RDIO_4KPPM S_4KPPM CRUZ_4KPPM C_4KPPM &S 81. GRN DK/WHT &K GRN DK/WHT 81. GRN DK/WHT J1-10 J6-D J1-E6 J10-J J9-C UPFIT ODY INFOJMPR S81 81 lk sm - Mbec VSS (4K PPM) mbec_ UPC FN J1-9 CLUSTER 2ppm Tach Sig Page CLUSTER Malf Ind Lp Page RKES Elec rake Mdl Page 8-44//C -1 STRTING ND CHRGING Starter Rly Page TCH MLF_LP 182 S_128K STRT_RLY 81. GRN DK/WHT D D F GT INE 16M GT E E F GT CHSSIS INE 12M GT WHT 419. RN/WHT 81. GRN DK/WHT 182. YEL/LK 625. YEL/LK J2-44 J2-38 J2-10 J2-35 J1-38 J2-46 J2- J2-49 J1-39 TCH IGN0 IGN0 IGN0 HI IDLE LMP (REV LOCK SOL) FUEL/OIL GUGE LOW OIL LMP PCM CHG OIL LP LIFT DIVE MLFUNCTION INDICTOR LP PRIMRY PPM SECONDRY PPM STRT SOL RLY (LSD) INE CONTROLS (LU3 &M30/MG5) CK EU 03 X &LU3 k33020c Panel Set: 5 schematic sheet1 310 $IVEDWORK/k33020c 009 REVISION 009 STGE VERSION LST CHNGED Y PROD 1 Friday, July 19, :32:09 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020c_009_05

182 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-86 RPO LEGEND M30-4L60E UTO TRNS Ign0 (Lh ec) Page TRNSPWR3 &M PNK E SOL SHIFT SOL SHIFT SOL CNTL SOL ENLE SOL PWM PRESSURE SWITCH MNIFOLD SUMP TEMP SENSOR FORCE MOTOR 1 SOL uto Trans-4L60E trans_l UPC FN C M S T U N R P M L C D &M YEL/LK &M TN/LK &M PNK &M RED &M YEL/LK &M LU LT/WHT &M GRN LT &M WHT &M RN &M LU DK &M GR &M RED/LK J2-48 J2-4 J1-9 J2-42 J2-2 J2-63 J1-1 J1-18 J1-53 J2-51 J2-6 J2-8 SHF SHF SKSHF LP 3-2 SHIFT SK SHIFT TCCEN TRNS MOD RELY TCC CTRL PCM IGN0 IGN0 IGN0 VCC TRNS PRESSURE SWITCH MNIFOLD C VREF RTN F TRNS TEMP FMTR1 HI FMTR1 LOW REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION INE CONTROLS (LU3 &M30/MG5) CK EU 03 X &LU3 k33020c 009 PROD 1 CKMC03 Panel Set: 6 schematic sheet1 310 $IVEDWORK/k33020c 009 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020c_009_06

183 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-8 PCM POST-OXYGEN SENSOR HETED (2 S2) O2 D CNTRL LO O2 D HI DEDICTED HTR GND D O2 D HTR LO 5V REF RTN E POST-OXYGEN SENSOR HETED (1 S2) O2 C DEDICTED CNTRL LO O2 C HI HTR GND C O2 C HTR LO PRE-OXYGEN SENSOR HETED (2 S1) O2 LO O2 HI DEDICTED HTR GND O2 HTR CNTRL LO PRE-OXYGEN SENSOR HETED (1 S1) O2 CNTRL LO O2 HI DEDICTED HTR GND O2 HTR CNTRL HI J1-25 J1-65 J1-6 J2-53 J1-80 J1-28 J1-68 J1-64 J2-52 J1-26 J1-66 J1-2 J2-4 J1-29 J1-69 J1-24 J HTR_GNDD 451 HTR_GNDC 451 HTR_GND 451 HTR_GND COOL_T Gnd Zone #4 Page (Page 1) Gnd Zone #4 Page Gnd Zone #4 Page Gnd Zone #4 Page IGN1 - O2 (Uh ec) Page IGN1 - O2 (Uh ec) Page IGN1 - O2 (Uh ec) IGN1 - O2 (Uh ec) Page Page O2SENS_P O2SENS_P O2SENS_P O2SENS_P 160. PPL 0.5 TXL PNK PPL/WHT PNK 0.5 TXL PPL 0.5 TXL 539. PNK 0.5 TXL PPL/WHT 539. PNK D D D D + - V HI LO Htd Oxy Snsr - RTPOST (2S2) 02_sens 001 UPC FN V HI LO Htd Oxy Snsr - LTPOST (1S2) 02_sens 001 UPC FN V HI LO Htd Oxy Snsr - RTPRE (2S1) 02_sens 001 UPC FN V HI LO Htd Oxy Snsr - LTPRE (1S1) 02_sens 001 UPC FN C C C C 161. TN 0.5 TXL RED/WHT TN/WHT RN TN GRN LT TN LK/WHT TXL TXL REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION INE CONTROLS (LU3 &M30/MG5) CK EU 03 X &LU3 k33020c 009 PROD 1 CKMC03 Panel Set: schematic sheet1 310 $IVEDWORK/k33020c 009 Friday, July 19, 2002 Panel Set: 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020c_009_0

184 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-88 SERIL CLSS 2 SERIL CLSS 2 LOW OIL LVL SWITCH IGN0 FLT KNOCK RTN 2 DIFF FLT KNOCK 2 RIGHT HND RES KNOCK LEFT HND RES KNOCK PCM FLT KNOCK RTN 1 DIFF FLT KNOCK 1 VREF RTN G IT VCC MF VCC DEDICTED ELECTRONIC THROTTLE CONTROL ETC ETC J1-58 J1-59 J1-0 J1- J1-10 J1-11 J1-51 J1-49 J1-9 J2-5 J2-25 J2-31 J1-15 J GRN DK 10. YEL 0.35 TXL 114. RN 116. GR 496. LU DK 42. TN 0.35 TXL Pcm I (Uh ec) Page SERIL DT LINK Class II Page M M M GT INE 16F GT LK 492. YEL 439 MF_IGN CL2_ 10. YEL 0.35 TXL TC_ Sw sm - Low Oil Lvl oil_lvl_sw 001 UPC FN N.O. HELD CLOSED T NORML FLUID LEVEL REF LOW TEMP E MF D IGN MF Sensor & IT maf_iat_snsr 001 6M J3-1 TC 451. LK/WHT Snsr sm-knock Flt Resp knock_snsr 001 UPC FN GND C OIL_LVL 451 MF_GND Gnd Zone #4 Page Mbec Page INE CONTROLS (LU3 &M30/MG5) CK EU 03 X &LU3 k33020c Panel Set: 8 schematic sheet1 310 $IVEDWORK/k33020c & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION 009 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 8 K33020c_009_08

185 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-89 VREF RTN H FUEL SNSR VREF 2 FTP SNSR FTPRESS (SEC) VCC FUEL PULL UP (SEC) FUEL LEVEL SEN IGN1 FUEL PUMP RELY (SEC) FUEL PUMP RELY PCM FUEL LEVEL SEN EST RTN (Page 10) EST RTN EST C EST F EST H EST J1-23 J1-46 J2-64 J1-5 J2-3 J2-9 J2-3 J2-54 J2-60 J2-2 J2-68 J2-69 J LK 44. GR 890. GRN DK 465. GRN DK/WHT 423. WHT 0.5 TXL J J C C D D &EV 44. GR &EV 890. GRN DK GXL GXL CHSSIS CHSSIS M GT INE CHSSIS 12F GT PRIM_FRLY FUEL SNDR/PUMP Fuel Pump Rly Page 8-22E/G/H/I FLVL_PRIM FUEL SNDR/PUMP Fuel Tank Sender Page 8-22E/G/H/I -1 INJ1 (Uh ec) Page IGN_COIL1 INJ2 (Uh ec) Page IGN_COIL2 REF LO C +5V PRESS Sensor-Fuel Tank Press fuel_tank_snsr 004 UPC FN SPRK TIMING PNK IGN D COIL DRIVER Coil sm - Ign coil_drvr 003 UPC FN 184. WHT/LK C DRIVER PNK IGN Ignition Coil coil_ign 001 UPC FN GND FUEL_VREFR 40 FUEL_EV C FUEL SNDR/PUMP Prim Fuel/Pump Page 8-22E/G/H/I -1 FUEL SNDR/PUMP Sec Fuel/Pump Page 8-22E/G/H/I -1 5 LU3_GND Gnd Zone #5 Page INE CONTROLS (LU3 &M30/MG5) k33020c CK EU 03 X &LU3 Panel Set: 9 schematic sheet1 310 $IVEDWORK/k33020c & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION 009 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 9 K33020c_009_09

186 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-90 PCM EST D EST G EST E EST EST RTN EST RTN CM RTN CM SUP CM POS CRNK SUP CRNK POS 1 CRNK RTN SPRE LSD 2 J2-6 J2-29 J2-28 J2-66 J2-61 J2-39 J1-3 J1-61 J1-2 J1-12 J1-21 J RED 632. PNK/LK 186. GRN LT YEL/LK 633. RN/WHT LU DK/WHT C C HLL EFFECT CM SENSOR Cam Sensor cam_snsr_lu3 001 UPC FN HLL EFFECT CM SENSOR Crank Sensor crank_snsr_lu3 001 UPC FN REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION INE CONTROLS (LU3 &M30/MG5) CK EU 03 X &LU3 k33020c 009 PROD 1 CKMC03 Panel Set: 10 schematic sheet1 310 $IVEDWORK/k33020c 009 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020c_009_10

187 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-91 PRNDL IGN0 PRNDL IGN0 PRNDL C IGN0 PRNDL P IGN0 /C CLUTCH PCM VREF RTN I VREF 2 SUPPLY /C PRESS SENSOR /C PRESS SWITCH IGN0 FN 2 CTRL RLY TRNSFER CSE (4WD HI-LOW) SWITCH IGN0 SEC HI /C PRESS SWITCH IGN0 V+ V- J1-32 J1-2 J2-62 J1-34 J2-43 J2-80 J1-45 J2-14 J2-55 J2-33 J2-16 J2-11 &M30 2. YEL &M30 6. WHT &NP1/NP2/NP8 &CJ2/CJ3 &CJ2/CJ3 &CJ2/CJ GRN DK/WHT LK GR RED/LK TXL TXL &NP1/NP2/NP GR/LK C_CLTCH TRNS_CSE J2- &M30 1. LK/WHT &M30 3. GR J1- J1-D J1- J1-C HVC /C Enable Rly Page TRNSF CSE CNTRL Trec Mdl/Trans Case Sw Page 8-38//C/D -1 PO NSU SWITCH PRT# PGE 8- ECM/PCM STRT KUP LP TSI P/N C P NSU-Sw sm nsbu_swtch J J J2-D 451 NSU_GND M30 Gnd Zone #4 Page TP_IN TP_REF 5V REF PRESS Sensor-/C Pressure acpres_snsr 002 UPC FN REF RTN INE CONTROLS (LU3 &M30/MG5) CK EU 03 X &LU3 k33020c Panel Set: 11 schematic sheet1 310 $IVEDWORK/k33020c & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION 009 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 11 K33020c_009_11

188 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LU3 4.3L V6 PGE D-92 PTO KILL IGN0 PTO FEEDCK PTO GE PTO ENLE SWITCH LOW COOLNT SWITCH IGN0 2 SPD XLE SWITCH IDLE IR CONTROL LOW HI PCM HI IDLE IR CONTROL LOW MDL GND C D Pcm Module pcm_lu3 005 UPC FN J J J1-1 J1-52 J1-8 J1-22 J1-30 J2-19 J2-8 J2-9 J2-6 J2- J1-1 J1-40 J2-1 J GRN LT &NP LK/WHT LU LT/LK LU LT/WHT GRN LT/WHT GRN LT/LK TXL 0.35 TRNS CSE CNTRL Frt xle Sw Page VGND_ 451 VGND_C FRT_XLE Gnd Zone #4 Page Gnd Zone #4 Page VGND_ 451 VGND_D Low Coolant Sw - Gen3/Lu3 sw_lcool 001 UPC FN Gnd Zone #4 Page Gnd Zone #4 Page C D LOW HI M HI LOW IC Motor iac_motor 003 UPC FN 5 LCOOL_GND Gnd Zone #5 Page REVISION STGE VERSION LST CHNGED Y 11:32:09 am ORGNIZTION INE CONTROLS (LU3 &M30/MG5) CK EU 03 X &LU3 k33020c 009 PROD 1 CKMC03 Panel Set: 12 schematic sheet1 310 $IVEDWORK/k33020c 009 Friday, July 19, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020c_009_12

189 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-93 TEMP REF LOW Sensor sm-cool Temp F V REF OIL PRESSURE REF LOW C C Sensor - Oil Pressure 5V Sensor - Map 5V Snsr-EGR Vac REF REF egr_vac 001 UPC FN 12F 00 MP EGR VC 12F 00 Sumitomo: LOW REF Furukawa: FW-C3F(2)- LOW REF C CL ONLY TEMP REF LOW Sensor sm-fuel Temp fuel_temp 002 UPC FN YEL GR TN/WHT LK GR GR GRN LT ORN/LK RN RN YEL TXL TXL TXL TXL TXL TXL TXL TXL 0.35 TXL ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU 8 8 D6 D6 D D D8 D F GT MXD ISUZU GMTG 38M GT MXD C6 C6 C8 C8 C C F GT MXD ISUZU GMTG 24M GT MXD D2 D2 D1 D F GT MXD ISUZU GMTG 38M GT MXD YEL J GR 0.35 TXL J TN/WHT LK GR GR GRN LT ORN/LK RN RN YEL TXL 0.35 TXL 0.35 TXL TXL J1-5 J1-24 J1-8 J2-29 J2-14 J1-25 J1-6 J2-60 J2-25 VREF COOLNT VRTN COOLNT TEMP OIL PRESS SENSE OIL PRESS GND 5V REF 1 5V REF 1&2 ECM MP SENSE MP/EGR VC RTN EGR VC FUEL TEMP GND FUEL TEMP VCC INE CONTROLS (L) CK EU 03 X &L Panel Set: 1 schematic sheet1 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:59:45 am ORGNIZTION k33020d 331 $IVEDWORK/k33020d & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 1 K33020d_009_01

190 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-94 TRNSMISSION Tcm Page UTO MNUL 4WD_LO TRNSFER CSE CNTRL Front xle Switch Page FRT_XLE TISS Trans Output Speed Snsr trans_speed_sen 003 UPC FN &M GR/LK &M GR/LK S1694 &M GR/LK &ML GR/LK LO HI TRNS_CSE CKUP LMPS Vehicle /U Page LCT TRNSMISSION Tcm Page LCT TRNSMISSION Tcm Page TRNSF CSE CNTRL Trec Mdl/Trnsf Case Sw Page ISUZU_IGN REV_SW REP_TOSSHI MIL_REQ (Page 10) EGR Intake Valve EGR Vent EGR Valve YZKI: YZKI: &ML GRN LT/LK &ML PPL/WHT &M YEL &M LU DK F GT MXD ISUZU GMTG 24M GT MXD J1-62 &NP LK/WHT J2-19 J2-63 MNUL J2-20 J2-21 UTO J GRN DK/WHT WHT 0.35 TXL J2-4 J WHT 0.35 TXL J2-2 TRNS REVERSE SW (MNUL) FR XLE SW IGN0 SWITCH (4WD HI-LO) TRNSFER CSE LOW TOSS HI ECM MIL REQUEST VCC EGR INTKE IR VLVE SOLENOID EGR VENT SOLENOID EGR VLVE SOLENOID INE CONTROLS (L) CK EU Panel Set: 2 03 X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_02

191 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-95 SPLICE SPLICE IC13. IC60. IC62. IC14. IC61. IC63. IC65. IC64. ORN/LK ORN/WHT ORN/LK ORN/WHT ORN/WH ORN/LK ORN/WHT ORN/LK 0.35 TXL 0.35 TXL 0.35 TXL ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU D D D D Fuel Injector 1 & 3 fuel_injector 001 6M6 X Fuel Injector 2 & 4 fuel_injector 001 6M6 X Fuel Injector 5 & fuel_injector 001 6M6 X Fuel Injector 6 & 8 fuel_injector 001 6M6 X IC13. ORN/LK ISUZU C IC15. GRN LT/RED ISUZU IC1. GRN LT/LK ISUZU C IC18. IC16. IC60. GRN LT/WHT GRN LT ORN/WHT 0.35 TXL ISUZU ISUZU ISUZU C IC19. GRN LT/RED ISUZU IC ISUZU TXL SPLICE C IC22. IC20. GRN LT/GRN DK GRN LT/PPL ISUZU ISUZU SPLICE J1-3 J1-4 J2-115 J1-1 J2-121 J2-118 IC21. IC521. GRN LT/ORN GRN LT/ORN TXL TXL ISUZU ISUZU J2-116 J1-61 J1-62 IC20. IC520. GRN LT/PPL GRN LT/PPL ISUZU ISUZU J2-120 J1-59 J1-60 INJ HI1 INJ #1 INJ #3 INJ #4 INJ #2 INJ HI2 INJ #5 INJ # INJ # INJ #8 INJ #6 INJ #6 EDU 5X SIG OUT INJ #1 INJ #4 INJ #6 INJ # INJ #2 INJ #3 INJ #5 INJ #8 J2-94 J1-66 J1-44 J1-64 J1-48 J1-6 J1-4 J1-45 J LU LT ISUZU C LK ISUZU C LU LT/LK ISUZU C YEL/LK ISUZU 11 C8 C1 C RED/LK ISUZU GRN LT/LK ISUZU PNK/LK TXL ISUZU LK/WHT ISUZU C2 C2 88. LU DK/WHT ISUZU F GT MXD C11 ISUZU C11 GMTG 38M GT MXD LU LT 144. LK 844. LU LT/LK 846. YEL/LK 8. RED/LK 145. GRN LT/LK 146. PNK/LK 845. LK/WHT 88. LU DK/WHT J2-6 J1-3 J1-4 J1-6 J1- J1-36 J1-44 J1-3 J1-43 2X OR 5X SIGNL OUTPUT INJ #1 INJ #4 INJ #6 INJ # ECM INJ #2 INJ #3 INJ #5 INJ #8 INE CONTROLS (L) CK EU Panel Set: 3 03 X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_03

192 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-96 EDU (Uh ec) Page EDU (Uh ec) Page TRNSMISSION Can Link Page TRNSMISSION Can Link Page RKES bs/vses Page 8-44//C -5/2/2 RPO LEGEND M4 - LCT 1000 UTO TRNS MT1-4L80E UTO TRNS MG5/MW3 - MNUL TRNS EDU_PWR1 339 EDU_PWR2 CNHI CNLO 441 CLTCH_SW C1 C1 HIGH EDU_J (Page 4) J2-91 J1939 GND 1 1 EDU_J- (Page 4) EDU_J (Page 4) LOW M GT MXD GMTG ISUZU 24F GT MXD J2-90 EDU 339. PNK 2.0 TXL IGN1 GND J PNK PNK 2.0 TXL TXL ISUZU ISUZU IGN M GT MXD GMTG ISUZU 38F GT MXD J2-119 Edu - Isuzu eau_edu 001 UPC FN EDU_J+ (Page 4) W/O M4 &M GRN DK W/ M4 W/ M4 &M YEL &M YEL S2361 S2362 PGE OSCH: J J &M GRN DK PO CLTCH SW TOP OF TRVL TOP OF TRVL OTTOM OF TRVL W/O M4 &ML6-JF4 48. GR RKCLTCH K K E Man Cltch Sw-Top Of Trvl #1 cltch_sw_top E F F GT 1/280 RKCLTCH 12M GT 1/ &ML6-JF4 48. GR RKES bs/vses (Uh ec 420) Page 8-44//C -5/3/1 EXTERIOR LIGTHING lk sm - Stop Lp Page RK_SW ETC_STOP J1-2 IZ1. LK/YEL ISUZU TXL J2-114 IZ18. LK/GRN DK 2.5 TXL 19 ISUZU F GT INE 16M GT M YEL W/O M4 &M YEL &M GRN DK -M GRN DK W/ M4 W / M4 W/O M4 &ML6 48. GR 420. PPL -NW LU LT J1-10 J1-9 J1-35 J2-59 J2-18 ECM HIGH J1939 LOW CLUTCH SWITCH (CRUISE DISLE) CRUISE ETC/TCC RKE RKE LMP SWITCH INE CONTROLS (L) CK EU Panel Set: 4 03 X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_04

193 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-9 INFOTINMENT-PREMIUM Radio Module Page 8-1C -1 CLUSTER 4k PPM Signal Page RDIO_4KPPM C_4KPPM 81. GRN DK/WHT Rail PSI Cntl Solenoid rail_solenoid 001 8D 0660 OSCH: J1-10 J6-D J1-E6 J10-J J9-C UPFIT ODY INFOJMPR S81 lk sm - Mbec VSS (4K PPM) mbec_ UPC FN PPL/WHT ISUZU YEL ISUZU 81 J C10 C10 C9 C F GT MXD ISUZU GMTG 38M GT MXD RTD Rtd Module Page CLUSTER 2PPR Tach Signal Page CLUSTER Mal Ind Lamp Page S/TRC CNTRL Elec rake Mod Page 8-44//C -1 STRTING & CHRGING Starter Relay Page Rpcv Rly (Uh ec) Page Ecm Rpcv (Uh ec) Page LIFT_DIVE TCH MLF_LP 182 S_128K STRT_RLY 2219 RPCV_CNTL RPCV_T 81. GRN DK/WHT 625. YEL/LK F F F GT M GT F GT M GT D D E E F GT CHSSIS 12M GT PNK/WHT 121. WHT 0.35 TXL 419. RN/WHT 81. GRN DK/WHT 182. YEL/LK 0.35 TXL 0.35 TXL PNK PPL/WHT YEL TXL J2-35 J2-10 J2-46 J2- J2-49 J2-4 J1-9 J2-44 J2-42 J2- LIFT/DIVE TCH IGN0 MLFUNCTION INDICTOR LP (SES) PRIMRY 4KPPM IGN0 IGN0 SECONDRY 128KPPM STRT SOL RLY ECM EDU/RPCV CNTL RPCV T RPCV HI RPCV LO INE CONTROLS (L) CK EU Panel Set: 5 03 X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_05

194 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-98 STRTING & CHRGING 1st Generator Page Crank Start (Uh ec) Page IGN0 (Lh ec) Page PCM (Uh ec) Page L_LTERM _CRNK 1020 TRNS_PWR1 440 _T2 STRTING & CHRGING 2nd Generator Page STRTING & CHRGING 1st Generator Page PCM-I (Uh ec) Page PCM (Uh ec) Page LT_L2TERM 23 L_FTERM 439 ECM_IGN1 _T1 &YF2/8X RN 0.8 TXL 806. PPL 440. ORN 0.8 TXL J1-32 J2-15 J2-52 J1-33 J1-19 J1-5 J1-20 J1-5 IGN0 IGN0 TTERY LTL-2 L TERM F TERM CRNK VIGN 1 VIGN 0 MON MON REQUEST ECM VTT VTT INE CONTROLS (L) CK EU Panel Set: 6 03 X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_06

195 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-99 CRUISE ECM CONNECTED INTERNLLY ON/OFF RESUME/ CCEL SET/ COST GND 1 POS SIG 1 5V REF 1 GND 2 POS SIG 2 5V REF 2 GND 3 POS SIG 3 5V REF 1C J2-16 J1-22 J1-18 J1-41 J2-24 J1-4 J1-54 J1-55 J1-45 J1-65 J2-12 J1-39. GR 8. GR/LK LU DK ḂRN LU DK WHT/LK PPL LU LT ṪN ĠR GRN DK YEL/LK TXL 0.35 TXL TXL L L S S M GT INE 16F GT J J F F G G C C D D K K E E M GT 1 SLD INE ETCJPR 10F GT 1 SLD W/ PTO W/O PTO W/O PTO W/ PTO &PTO 39. GR -PTO 39. GR -PTO 8. GR/LK -PTO 84. LU DK 0.35 TXL TXL 0.35 TXL TXL PTO_ON &PTO 84. LU DK PTO_SET 121 PPS_RTN PPS_REF PPS_SIG2 123 PPS_RTN3 125 PPS_REF3 PTO PROV PTO Switch Page PTO PROV PTO Switch Page ETC Etc Module Page /4 ETC Etc Module Page / PPS_SIG1 122 ETC Etc Module Page /4 PPS_RTN2 ETC Etc Module Page /4 124 PPS_REF ETC Etc Module Page /4 PPS_SIG3 84 CRUZ_SET W/ PTO W/O PTO 32 1 W/O PTO 10 W/ PTO &PTO PTO PROV Pto Sw Page ETC Etc Module Page /4 ETC Etc Module Page /4 ETC Etc Module Page /4 ETC Etc Module Page /4 PO STEERING COLUMN PRT# PGE 8- ETC CRUISE FTP HORN IGN KEYIN PSSLOCK SIR 04-1 STEERWHL TRNHZ WER ECM 020- OFF ON NEUTRL STRG Col sm - Cruise Cntrl Sw eau_cruise_sw 004 UPC FN &PTO CRUZ_ON 18 Cruise (Lh ec) Page PTO PROV Pto Sw Page CRUISE_SW INE CONTROLS (L) CK EU Panel Set: 03 X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_0

196 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-100 SERIL CLSS 2 SERIL CLSS 2 LOW COOLNT IGN0 WTER IN FUEL ECM OIL LVL IT MF IGN0 VCC VCC MF IT REF RTN LOW J1-58 J1-59 J1-30 J1-1 J1-0 J2-41 J1-64 J2-51 J GRN DK 10. YEL 148. GRN LT 8. YEL/LK Ign1-Fuel Htr (Uh ec) Page RN 0.8 TXL GR/LK 42. TN PCM-I (Uh ec) Page M M M GT INE 16F GT FUEL_HTR 439 MF_P 552. LK 492. YEL SERIL DT LINK Class II Page CL2_ 10. YEL CLSS2-2 (WUR) 251/-4 J3-1 TC TC_ D3 D3 8. YEL/LK ISUZU Water In Fuel Sw water_sw 001 UPC FN YZKI: C6 C PNK ISUZU Fuel Heater fuel_htr 001 UPC FN YZKI: RN 0.85 TXL ISUZU M GT MXD GMTG ISUZU 38F GT MXD Oil Level Sw oil_level_sw 002 UPC FN N.O. HELD CLOSED T NORML FLUID LEVEL 1 REF LOW 2 TEMP 5 MF GND 4 3 MF Sensor IGN maf_snsr 001 UPC FN WIF_GND FHTR_GND LOIL_GND lcool_sw Low Coolant Sw L18/L UPC FN N.O. HELD CLOSED T NORML FLUID LEVEL 5 LCOOL_GND1 Gnd Zone #5 Page INE CONTROLS (L) CK EU Panel Set: 8 03 X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_08

197 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-101 FUEL SENSOR RTN FUEL PULL UP (SEC) FUEL LEVEL SEN2 FUEL PUMP RELY (PRI) FUEL LEVEL SEN1 ECM GLOW PLUG WIT (WTS) CM RTN CM SUP CM SIG CRNK RTN CRNK SUP CRNK SIG J2-5 J2-3 J2-9 J2-54 J2-36 J2-39 J1-61 J1-3 J1-2 J1-21 J LK -NQZ 465. GRN DK/WHT. LU DK RED RN/WHT 632. PNK/LK GRN LT LU DK/WHT 0.35 TXL 0.35 TXL YEL/LK 0.35 TXL FLVL_RTN1 FUEL SNDR/PUMP Fuel Sndr Return Page FLVL_SEC PRIM_FRLY FUEL SNDR/PUMP Fuel Pump Rly Page FLVL_PRIM CLUSTER Wait Intake Htr Page WIT_STRT RED 0.35 TXL 633. RN/WHT 186. GRN LT 0.35 TXL LU DK/WHT ISUZU ISUZU ISUZU ISUZU PNK/LK YEL/LK 0.35 TXL 0.35 TXL ISUZU ISUZU M GT MXD GMTG ISUZU 38F GT MXD FUEL SNDR/PUMP Sec Fuel Sender Page FUEL SNDR/PUMP Fuel Tank Sender Page Gnd Gnd C C HLL EFFECT CM SENSOR Cam Sensor h22_hall 003 UPC FN HLL EFFECT CRNK SENSOR Crank Sensor h22_hall 003 UPC FN INE CONTROLS (L) CK EU 03 X &L Panel Set: 9 schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE VERSION LST CHNGED Y PROD 1 Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_09

198 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-102 Fuel Htr Ign1 (Uh ec) Page GLOW_MOD 1 1 ISUZU_IGN1 IGN1 (Page 2) (Page 10) CL GLOW PLUGS ENLE J YEL 2 2 FED IH_RLY (Page 10) GLOW PLUGS DIG ECM J LU LT 0.8 TXL M GT MXD 3 GMTG 3 ISUZU 38F GT MXD J RN 4 4 (Page 10) IH_EN J YEL C5 C5 (Page 10) IH_MON J PNK 5 5 (Page 10) M GT MXD GMTG ISUZU 24F GT MXD IH_DIG 15 GLOW_FD RED 19.0 STX 113 Glow Plug (att Fuse) Page VERIFY HRNESS Glow Plug Term Relay UPC FN IH_RLY (Page 10) (Page 10) T_GP CL FED IGN D (Page 10) GLOW_RLY ENLE T GLOW PLUG CONTROLLER C DIG Glow Plug Control glow_plg_cntl 001 FN UPC (Page 10) GLOW_RLY CL (Page 10) T_GP FED SPLICE (Page 10) FED IH_EN CL GND GLOW PLUGS Ring Terminal TD Glow Plug Rly glow_plug 001 UPC FN TD (Page 10) IH_DIG IGN1 (Page 10) IH Relay iah_rly 001 UPC FN TD (Page 10) IH_MON SPLICE CL FED SPLICE Intake ir Heater iah 001 UPC FN TD SPLICE Glow Plug #8 glow_plug 001 UPC FN Glow Plug #6 glow_plug 001 UPC FN Glow Plug #4 glow_plug 001 UPC FN Glow Plug #2 glow_plug 001 UPC FN Glow Plug #1 glow_plug 001 UPC FN Glow Plug #3 glow_plug 001 UPC FN Glow Plug #5 glow_plug 001 UPC FN Glow Plug # glow_plug 001 UPC FN INE CONTROLS (L) CK EU Panel Set: X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_10

199 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-103 PRNDL P IGN0 /C CLUTCH RELY ECM V5 RTN V5 REF IGN0 SNSR SIGNL J1-34 J2-34 J1-51 J2-28 J1-68 &M ORN/LK 459. GRN DK/WHT &CJ2/CJ LK &CJ2/CJ3 &CJ2/CJ GR RED/LK C_CLTCH HVC /C Enable Rly Page PO NSU SWITCH PRT# PGE 8- ECM STRT KUP LP TSI TCM TCM PRNDL PRNDL C Page Page TCM_ TCM_C TCM TCM PRNDL PRNDL P Page Page TP_IN TP_REF 2 5V REF REF RTN 1 PRESS 3 Sensor-/C Pressure acpres_snsr 002 UPC FN &M4 1. LK/WHT &M4 3. GR TCM_ TCM_P &M4 2. YEL &M4 6. WHT J2- J1- J1-D J1- J1-C P/N P C NSU-Sw sm nsbu_swtch J J J2-D 451 NSU_GND RPO LEGEND M4 - LCT 1000 UTO TRNS MX4 - LCT 2000 UTO TRNS MTW - LCT 2400 UTO TRNS &M4/MN8 Gnd Zone #4 Page INE CONTROLS (L) CK EU Panel Set: X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_11

200 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: L 6.6L Diesel PGE D-104 PTO KILL IGN0 PTO FEEDCK PTO GE RLY PTO ENLE SWITCH RO ECM RIL PRESSURE POWER GNDS L ECM Module eau_lb_ecm 002 UPC FN RTN 5V REF 5V REF RTN C D J J J2-56 J2-13 J2-3 J1-1 J2-64 J2-8 J1-46 J1-48 J2-23 J2-58 J1-1 J1-40 J2-1 J2-40 &PTO&M LU LT 0.8 TXL &PTO YEL 0.8 TXL &PTO PPL 0.8 TXL PTO_GE &PTO 488. GRN LT 0.8 TXL GR/LK ORN/LK WHT/LK TN ORN/LK YEL TXL VGND_ 451 VGND_C PTO DIS PTO PROV To Conn Page PTO PROV Pto Rly Page PTO_FDK PTO_ENLE Gnd Zone #4 Page Gnd Zone #4 Page VGND_ 451 VGND_D PTO PROV Splice 2522 Page PTO PROV Pto Enable Page Gnd Zone #4 Page Gnd Zone #4 Page M GT MXD GMTG ISUZU 24F GT MXD C3 C3 C4 C4 C5 C M GT MXD GMTG ISUZU 38F GT MXD GR LK ORN/LK WHT/LK TN ORN/LK YEL TXL 0.35 ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU Sensor - aro vac_snsr 001 UPC FN R REF LOW REF 5V REF LOW REF 5V RIL Sensor - Rail Pressure rail_snsr 001 UPC FN OSCH: C C INE CONTROLS (L) CK EU Panel Set: X &L schematic sheet1 OJECT ID k33020d 331 $IVEDWORK/k33020d 009 REVISION 009 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :59:45 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33020d_009_12

201 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D YEL ISUZU C Sensor - Oil Pressure 5V Sensor sm-cool Temp UPC FN 003 REF OIL TEMP PRESSURE F 4000 Sumitomo: REF REF LOW LOW TN/WHT LK GR GR TXL TXL TXL 0.5 ISUZU ISUZU ISUZU TXL ISUZU FW-C-6F- E F FURUKW ISUZU 8 8 E F ISUZU FURUKW 38M GT MXD FW-C-6M- TN/WHT LK GR ISUZU ISUZU ISUZU F GT MXD D6 D D8 ISUZU D6 D D8 GMTG 38M GT MXD C6 MP 5V REF LOW REF C Sensor - Map F 00 Furukawa: FW-C3F(2)- C F GT MXD ISUZU D2 Sensor sm-fuel Temp fuel_temp 002 UPC FN REF LOW GR GRN LT ORN/LK RN YEL 0.5 TXL 0.5 TXL 0.5 TXL 0.5 TXL 0.5 TXL ISUZU ISUZU ISUZU ISUZU ISUZU C6 C8 C8 C GMTG 24M GT MXD TEMP D2 D1 D F GT MXD ISUZU GMTG 38M GT MXD YEL 20. GR TN/WHT LK GR 0.35 TXL TXL TXL 59. GR 0.35 TXL 432. GRN LT 469. ORN/LK 18. RN 0.35 TXL 158. YEL J2-6 J2-14 J2-25 J2-39 J1-34 J1-39 J2-23 J2-30 J3-48 J2-2 COOLNT TEMP VREF COOLNT VRTN OIL PRESS SENSE OIL PRESS GND 5V REF 1 5V REF 1&2 ECM MP SENSE MP VC RTN FUEL TEMP GND VCC FUEL TEMP INE CONTROLS (LLY) CK EU Panel Set: 1 of X schematic &LLY sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 3:30:28 pm ORGNIZTION 1 CKMCE Tuesday, December 9, 2003 Panel Set: 1 K43020d_005_01

202 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-106 TRNSMISSION Tcm Page UTO MNUL 4WD_LO TRNSFER CSE CNTRL Frt xle Sw Page FRT_XLE &M GR/LK &M GR/LK S1694 &M GR/LK &ML GR/LK TISS Trans Output Speed Snsr trans_speed_sen 003 UPC FN TRNS_CSE LO HI TRNSF CSE CNTRL Trec Mdl/Trans Case Sw Page 8-38//C/D -1 CKUP LMPS Vehicle /U Page LCT TRNSMISSION Tcm Page LCT TRNSMISSION Tcm Page SIG GND M DC MTR - EGR Valve DC Motor/Sensor 04egr_mtr_snsr 001 UPC FN &CNV&L 5V DC MTR REV_SW REP_TOSSHI MIL_REQ J3-45 &NP LK/WHT J3-8 J &ML6 &ML6 GRN LT/LK PPL/WHT 0.5 TXL 0.5 TXL MNUL J3-23 J3-12 &M YEL UTO &M LU DK LK N/WH GR OG/K L-GN/K 0.85 TXL TXL 0.85 ISUZU ISUZU ISUZU ISUZU ISUZU F GT MXD 3 3 C3 C4 C5 ISUZU 3 3 C3 C4 C5 GMTG 24M GT MXD LK 0.35 TXL 563. N/WH 0.35 TXL 203. GR 0.35 TXL J2-11 J2-21 J2-8 J1-14 J OG/K OG/K 0.5 TXL S OG/K TXL J2-33 J L-GN/K TXL L-GN/K 546. L-GN/K J2-35 S546 J2-55 TRNS REVERSE SW FR XLE SW IGN0 SWITCH (4WD HI-LO) TRNSFER CSE LOW TOSS HI ECM IGN0 EXH RKE SW MIL REQUEST VCC EGR GND EGR SIGNL VREF 5V EGR DC MTR + EGR DC MTR + EGR DC MTR - EGR DC MTR - INE CONTROLS (LLY) CK EU 04 X &LLY Panel Set: 2 of 14 schematic sheet1 153 $IVEDWORK/k43020d 005 OJECT ID REVISION STGE VERSION LST CHNGED Y 3:30:28 pm k43020d 005 PROD 1 Tuesday, December 9, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 2 K43020d_005_02

203 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-10 SPLICE IC13. ORN/LK 2.0 TXL ISUZU F_Inj_ F_Inj_3 IC63 (Page 3) IC60 F_Inj_3 (Page 3) SPLICE F_Inj_ (Page 3) (Page 3) IC60. IC62. IC14. IC61. IC63. IC65. ORN/WHT ORN/LK ORN/WHT ORN/WHT ORN/LK ORN/WHT 2.0 TXL 2.0 TXL TXL 2.0 TXL TXL TXL ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU IC64. ORN/LK 2.0 TXL ISUZU Fuel Inj #1 Fuel Injector #3 fuel_injector 001 6M6 X0036 OSCH Fuel Inj #4 Fuel Injector #2 fuel_injector 001 6M6 X0036 OSCH Fuel Inj #5 Fuel Injector # fuel_injector 001 6M6 X0036 OSCH Fuel Inj #8 Fuel Injector #6 fuel_injector 001 6M6 X0036 OSCH IC13. ORN/LK 2.0 TXL ISUZU IC15. GRN LT/RED 2.0 TXL ISUZU IC1. IC18. IC16. IC60. IC19. IC21. IC22. IC20. GRN LT/LK GRN LT/WHT GRN LT ORN/WHT GRN LT/RED GRN LT/ORN GRN LT/GRN DK GRN LT/PPL 2.0 TXL 2.0 TXL TXL TXL TXL TXL TXL 2.0 TXL ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU SPLICE SPLICE J1-3 J1-4 J2-115 J1-1 J2-121 J2-118 IC21. IC521. GRN LT/ORN GRN LT/ORN 0.5 TXL TXL 0.5 ISUZU ISUZU J2-116 J1-61 J1-62 IC20. IC520. GRN LT/PPL GRN LT/PPL 0.5 TXL 0.5 TXL ISUZU ISUZU J2-120 J1-59 J1-60 INJ HI1 INJ #1 INJ #3 INJ #4 INJ #2 INJ HI2 INJ #5 INJ # INJ # INJ #8 INJ #6 INJ #6 EDU 5X SIG OUT INJ #1 INJ #4 INJ #6 INJ # INJ #2 INJ #3 INJ #5 INJ #8 J2-94 J1-66 J1-44 J1-64 J1-48 J1-6 J1-4 J1-45 J LU LT LK LU LT/LK YEL/LK RED/LK TXL 0.5 ISUZU ISUZU ISUZU ISUZU ISUZU C8 C LU LT J2-63 C1 C LK 0.35 TXL J2-2 C12 C LU LT/LK J YEL/LK J RED/LK J GRN LT/LK PNK/LK ISUZU ISUZU GRN LT/LK J PNK/LK J LK/WHT ISUZU C2 C LK/WHT J LU DK/WHT ISUZU F GT MXD C11 ISUZU C11 GMTG 38M GT MXD LU DK/WHT J2-68 2X OR 5X SIGNL OUTPUT INJ #3 INJ #8 INJ #5 INJ #2 INJ #1 INJ #6 INJ #4 INJ # ECM INE CONTROLS (LLY) CK EU Panel Set: 3 of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 3:30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: 3 K43020d_005_03

204 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL EDU (Uh ec) Page Engine Controls: LLY 6.6L Diesel EDU (Uh ec) Page &LLY TRNSMISSION Can Link Page TRNSMISSION Can Link Page RKES bs/vses Page 8-44//C -5/2/2 &LLY PGE RPO LEGEND M4 - LCT 1000 UTO TRNS MG5/MW3 - MNUL TRNS CNV - CONTROL INTERIM CHNGE FOR 2004 L D-108 EDU_PWR1 339 EDU_PWR2 CNHI CNLO 441 CLTCH_SW 339. PNK &M YEL &M GRN DK C1 C1 CN_HI (Page 10) EDU_J (Page 4) SPLICE 1 1 SPLICE 2362 (Page 4) M GT MXD GMTG ISUZU 24F GT MXD CN_LO (Page 10) 2.0 TXL PNK 2.0 TXL ISUZU PNK 2.0 TXL ISUZU M GT MXD GMTG ISUZU 38F GT MXD M4 EDU_J+ (Page 4) M4 &M YEL M4 EDU_J- EDU_J- (Page 4) &M GRN DK PO CLTCH SW TOP OF TRVL TOP OF TRVL OTTOM OF TRVL -M4 PGE K K E =&LLY&ML6-JF4 48. GR RKCLTCH Man Cltch Sw-Top Of Trvl #1 cltch_sw_top E F F GT 1/280 RKCLTCH 12M GT 1/ EXTERIOR LIGTHING lk sm - Ubec Stop Lp Page 8-110/-2 ETC_STOP YEL ISUZU J GRN DK ISUZU J2-90 J1-5 J2-119 S2361 S2362 RKES bs/vses (Uh ec 420) Page 8-44//C-5/3/1 &ML6-JF4 48. GR HIGH J1939 LOW IGN1 IGN1 Edu - Isuzu eau_edu 001 UPC FN RK_SW GND EDU GND OSCH: J J F GT 1/280 Sld INE 16M GT 1/280 Sld J1-2 J2-114 IZ1. IZ18. LK/YEL LK/GRN DK 2.5 TXL TXL 19 ISUZU ISUZU -M YEL &M YEL &M GRN DK -M GRN DK &ML6 48. GR NW PPL 0.35 TXL LU LT 0.5 TXL W/O M4 J1-1 W/M4 W/M4 J1-2 W/O M4 J3-4 J2-61 J2-60 ECM HIGH J1939 LOW CLUTCH SWITCH (CRUISE DISLE) CRUISE ETC/TCC RKE RKE LMP SWITCH INE CONTROLS (LLY) CK EU Panel Set: 4 of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION 005 STGE PROD VERSION 1 LST CHNGED Y 3:30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K43020d_005_04

205 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-109 INFOTINMENT-PREMIUM Radio Module Page 8-1C -1 CLUSTER 4kppm Signal Page &LLY 81 RDIO_4KPPM C_4KPPM J1-10 J6-D 81. GRN DK/WHT J1-E6 J10-J J9-C UPFIT ODY INFOJMPR S81 lk sm - Mbec VSS (4K PPM) mbec_ UPC FN Rail PSI Cntl Solenoid rail_solenoid 001 8D 0660 OSCH: Y PPL/WHT 0.85 TXL ISUZU YEL 0.85 TXL ISUZU CLUSTER 2ppm Tach Sig Page CLUSTER Malf Ind Lp Page J1-9 S/TRC CNTRL Elec rake Mod Page 8-44//C STRTING & CHRGING Starter Rly Rpcv Rly (Uh ec) Page Page Ecm Rpcv (Uh ec) Page IZ0. S ISUZU Gnd C10 C10 Ecm Rpcv (Uh ec) Page C9 C F GT MXD ISUZU GMTG 38M GT MXD &CNV&L 15 &CNV&L 15 TCH MLF_LP 182 S_128K STRT_RLY 2219 RPCV_CNTL 1039 RPCV_T2 RPCV_T F GT 1/280 Sld 16M GT 1/280 Sld GRN DK/WHT D D E E F GT CHSSIS 12M GT YEL/LK SC PPL/WHT S PPL/WHT YEL 0.5 TXL S YEL 0.5 TXL 121. WHT 419. RN/WHT 81. GRN DK/WHT 182. YEL/LK 0.35 TXL 0.35 TXL PNK PNK PNK PNK PPL/WHT TXL YEL J3-9 J3-3 J3-40 J1-53 J1-46 J3-35 J1-52 J3-14 J3-10 J1-56 J1-42 J1-40 J1-54 J1-51 J1-3 LIFT/DIVE TCH IGN0 MLFUNCTION INDICTOR LP (SES) PRIMRY 4KPPM IGN0 SECONDRY 128KPPM IGN0 STRT SOL RLY EDU/RPCV CNTL DC EGR MTR RPCV TT2 ECM RPCV T RPCV HI RPCV HI RPCV LO RPCV LO INE CONTROLS (LLY) CK EU Panel Set: 5 of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 3:30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: 5 K43020d_005_05

206 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-110 STRTING & CHRGING 1st Generator Page Crank Start (Uh ec) Page IGN0 (Lh ec) Page Ecm Fuse (Uh ec) Page &LLY &LLY 20 &LLY 25 LLY_LTERM _CRNK 1020 TRNS_PWR2 440 ECM_T2 STRTING & CHRGING 2nd Generator Page STRTING & CHRGING 1st Generator Page PCM-I (Uh ec) Page Ecm Fuse (Uh ec) Page &LLY 15 &LLY 20 LT_L2TERM 23 LLY_FTERM 439 ECM_IGN1 ECM_T1 S439 &YF2/8X RN 0.8 WXC PPL PNK TXL 439. PNK 0.5 TXL 440. ORN 0.8 WXC19 J2-5 J2-4 J1-41 J3-18 J1-19 J1-10 J1-18 J1-20 J1-5 IGN0 IGN0 IGN 1 TTERY LTL-2 L TERM MON F TERM MON CRNK REQUEST IGN 1 MONITOR STRT RUN ECM VIGN 0 VTT VTT INE CONTROLS (LLY) CK EU Panel Set: 6 of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 3:30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: 6 K43020d_005_06

207 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-111 CRUISE CRUISE 12V ECM CONNECTED INTERNLLY ON/OFF RESUME/ CCEL SET/ COST GND 1 POS SIG 1 5V REF 1 GND 2 POS SIG 2 5V REF 2 GND 3 POS SIG 3 5V REF 1C J3-30 J3-22 J3-19 J1-38 J2-40 J2-19 J1-32 J2-54 J1-28 J1-1 J2-56 J2-24 J GR 8. GR/LK 84. LU DK RN LU DK WHT/LK PPL LU LT ṪN ĠR GRN DK YEL/LK 0.35 TXL TXL TXL L L S S M GT 1/280 Sld INE 16F GT 1/280 Sld J J F F G G C C D D K K E E M GT 1 SLD INE 10F GT 1 SLD W/ PTO W/O PTO W/O PTO W/ PTO &PTO 39. GR -PTO 39. GR -PTO 8. GR/LK -PTO 84. LU DK &PTO 84. LU DK 121 PPS_RTN PPS_REF PPS_SIG2 123 PPS_RTN3 125 PPS_REF3 PTO_ON PTO_SET PTO PROV PTO Switch Page PTO PROV Pto Sw Page ETC Etc Module Page /4 ETC ETC Etc Module Page /4 Etc Module Page / PPS_SIG1 122 PPS_RTN2 124 ETC Etc Module Page /4 PPS_REF ETC Etc Module Page /4 PPS_SIG3 W/ PTO W/O PTO W/O PTO W/ PTO 84 CRUZ_SET ETC Etc Module Page /4 ETC Etc Module Page /4 ETC Etc Module Page /4 ETC Etc Module Page /4 &PTO PO STEERING COLUMN PRT# PGE 8- ETC CRUISE FTP HORN IGN KEYIN PSSLOCK SIR 04-1 STEERWHL TRNHZ WER ECM OFF ON 1 NEUTRL 10 PTO PROV Pto Sw Page STRG Col sm - Cruise Cntrl Sw eau_cruise_sw 004 UPC FN 39 &PTO CRUZ_ON 18 Cruise (Lh ec) Page PTO PROV Pto Sw Page CRUISE_SW INE CONTROLS (LLY) CK EU Panel Set: of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 3:30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: K43020d_005_0

208 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-112 SERIL CLSS 2 SERIL CLSS 2 LOW COOLNT IGN0 WTER IN FUEL ECM OIL LVL IGN0 MF RTN IT REF LOW IT VCC MF VCC J1-15 J1-16 J2-38 J2-1 J2-26 J2-29 J2-58 J3-24 J1-13 SERIL DT LINK Class II - Star Page CL2_ GRN DK 10. YEL M M 148. GRN LT M GT 1/280 Sld INE 16F GT 1/280 Sld N.O. HELD CLOSED T NORML FLUID LEVEL 8. YEL/LK D3 D3 lcool_sw Low Coolant Sw L18/LLY UPC FN C6 &LLY 114. RN ISUZU FW-C-6M- 38M GT MXD FURUKW YEL/LK PNK ISUZU TXL 2.0 ISUZU ISUZU ISUZU FURUKW 114. FW-C-6F- RN ISUZU Fuel Heater Water In Fuel Sw fuel_htr 001 Oil Level Sw water_sw 001 UPC FN oil_level_sw 002 UPC FN UPC FN YZKI: YZKI: N.O. HELD CLOSED T NORML FLUID LEVEL IC91. IC96. IC69. YEL LU LT GRN/WHT TXL 1.25 ISUZU ISUZU ISUZU SPLICE WIF_GND Ign1-Fuel Htr (Uh ec) Page C6 FHTR_GND 114. RN 0.8 WXC M GT MXD GMTG ISUZU 38F GT MXD LOIL_GND GR/LK 552. LK 42. TN 492. YEL PCM-I (Uh ec) Page FUEL_HTR 439 MF_P 1 REF LOW 2 TEMP 5 MF GND &LLY MF Sensor IGN maf_snsr 001 UPC FN LCOOL_GND1 &LLY Gnd Zone #5 Page INE CONTROLS (LLY) CK EU Panel Set: 8 of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 3:30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: 8 K43020d_005_08

209 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-113 FUEL SENSOR RTN FUEL PULL UP (SEC) FUEL LEVEL SEN2 FUEL PUMP RELY (PRI) FUEL LEVEL SEN1 ECM GLOW PLUG WIT (WTS) CM RTN CM SUP CM SIG CRNK SUP CRNK RTN CRNK SIG J3-5 J2-64 J1-43 J1-44 J1-30 J1-26 J1- J1-8 J3-51 J2-28 J3-43 J GY/K 40. LK FLVL_RTN1 FUEL SNDR/PUMP Fuel Sndr Return Page NQZ 465. GRN DK/WHT PRIM_FRLY FUEL SNDR/PUMP Fuel Pump Rly Page FLVL_SEC FLVL_PRIM1 CLUSTER Wait Intake Htr Page WIT_STRT. LU DK RED RN/WHT 632. PNK/LK GRN LT LU DK/WHT 0.35 TXL 0.35 TXL YEL/LK 0.35 TXL RED RN/WHT GRN LT LU DK/WHT 0.5 TXL 0.5 TXL ISUZU ISUZU ISUZU ISUZU PNK/LK YEL/LK 0.5 TXL 0.5 TXL ISUZU ISUZU M GT MXD GMTG ISUZU 38F GT MXD &LLY FUEL SNDR/PUMP Sec Fuel Sender Page &LLY FUEL SNDR/PUMP Fuel Tank Sender Page C2 C2 IC12. GY/K ISUZU M GT MXD GMTG ISUZU 2 24F GT MXD FUEL FILTER PRESSURE SWITCH 04_fuel_pres_sw 001 UPC FN HLL EFFECT CM SENSOR Gnd C Cam Sensor h22_hall 003 UPC FN HLL EFFECT CRNK SENSOR Gnd C Crank Sensor h22_hall 003 UPC FN FFPS_GND INE CONTROLS (LLY) CK EU Panel Set: 9 of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 3:30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: 9 K43020d_005_09

210 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-114 ECM GLOW PLUGS ON GLOW PLUGS DIG J YEL Fuel Htr Ign1 (Uh ec) Glow Plug (Mega Fuse) Page Page J &LLY GLOW_MOD GLOW_FD M GT MXD GMTG ISUZU 38F GT MXD RED 19.0 STX 133 S1042 CN_HI (Page 4) CN_LO H01. YEL 0.5 XXX-XX ISUZU RED 8.0 FUSELINK 3 (Page 4) J1-12 J1-6 J2-1 DIG DIG IGN GLOW PLUG CONTROLLER T Glow Plug Control glow_plg_mdl 003 FN UPC H11. RED/GRN 2.0 EX-MT ISUZU GND H03. S 0.85 EX-MT ISUZU FW-C-6F- FURUKW C ISUZU C ISUZU FURUKW 38M GT MXD FW-C-6M- J1-10 J1-9 J1-8 J1- J1-1 J1-2 J1-3 J1-4 H16. H12. H13. H1. WHT/GRN LT WHT/GRN RED/WHT RED/LU DK 2.0 EX-MT 2.0 EX-MT 2.0 EX-MT 2.0 EX-MT ISUZU ISUZU ISUZU ISUZU H14. WHT/YEL 2.0 EX-MT ISUZU H15. RED/GRN LT 2.0 EX-MT ISUZU J1-FCI CONN J GND C H18. WHT/LU DK 2.0 EX-MT ISUZU Glow Plug #8 glow_plug 001 UPC FN Glow Plug #6 glow_plug 001 UPC FN Glow Plug #4 glow_plug 001 UPC FN Glow Plug #2 glow_plug 001 UPC FN Glow Plug #1 glow_plug 001 UPC FN Glow Plug #3 Glow Plug #5 Glow Plug # glow_plug 001 glow_plug 001 glow_plug 001 UPC FN UPC FN UPC FN INE CONTROLS (LLY) CK EU Panel Set: 10 of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 3:30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: 10 K43020d_005_10

211 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-115 VREF2 FUEL FILTER F FILTER RTN ECM VNT POSITION /C SENSOR C LO CLUTCH VNT VLVE PRNDL P C REQUEST PRESS RELY SIGNL V5 RTN V5 REF IGN0 IGN0 IGN0 VNT VLVE VNT VNT RTN SOLENOID SOLENOID LO HI VREF2 C PRESS SNSR SIGNL J1-22 J2-4 J2-20 J3-31 J3-20 J2-34 J3-41 J2- J2-49 J2-31 J1-23 J2-44 J2-13 J1-21 J3-33 &M ORN/LK 459. GRN DK/WHT TXL WH 0.5 TXL DK LU 594. YE OG/K TN &CJ2/CJ LK &CJ2/CJ GR &CJ2/CJ RED/LK 0.35 TXL TXL TXL C_CLTCH HVC /C Enable Rly Page &M4 1. LK/WHT TCM_ TCM PRNDL Page &M4 2. YEL TCM PRNDL Page TCM PRNDL C Page &M4 3. GR TCM_ TCM_C TCM PRNDL P Page TCM_P &M4 6. WHT L-GN/WH ISUZU M GT MXD GMTG ISUZU 24F GT MXD PK/K PU/WH YE/K 0.85 TXL TXL ISUZU ISUZU ISUZU HI LO VNT SOLENOID 04vnt_sol 001 UPC FN PR SIGNL VREF RTN C 5. TN/WH TXL ISUZU 16 Vnt Position Sensor 04vnt_pos_sen 001 UPC FN CONN? PINS? TP_IN TP_REF 2 5V REF REF RTN 1 PRESS 3 Sensor-/C Pressure acpres_snsr 002 UPC FN PO NSU SWITCH PRT# PGE 8- ECM STRT TSI KUP LP P/N C P NSU Sw - Decoder (Other Engines) nsbu_decoder_others NSU_GND RPO LEGEND M4 - LCT 1000 UTO TRNS MX4 - LCT 2000 UTO TRNS MTW - LCT 2400 UTO TRNS INE CONTROLS (LLY) CK EU Panel Set: 11 of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 &M4 Gnd Zone #4 Page :30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: 11 K43020d_005_11

212 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-116 PTO KILL IGN0 PTO FEEDCK PTO GE RLY PTO ENLE SWITCH RO SIGNL ECM RIL PRESSURE POWER GNDS RTN 5V REF 5V REF RTN J3-1 J3-1 J3-39 J3-6 J2-46 J1- J1-31 J1-33 J2-2 J2-42 J2-3 J1-9 J2-36 J3-44 &PTO&M LU LT 0.8 WXC19 &PTO &PTO YEL PPL WXC 0.8 WXC19 PTO_GE &PTO 488. GRN LT 0.8 WXC GR/LK 105. ORN/LK WHT/LK TXL TXL TXL TN ORN/LK YEL 0.35 TXL 451 LLY_GND 451 LLY_GNDC PTO DIS PTO PROV Pto Conn Page PTO PROV Pto Rly Page PTO_FDK PTO_ENLE Gnd Zone #4 Page Gnd Zone #4 Page LLY_GND 451 LLY_GNDD PTO PROV Splice 2522 Page PTO PROV Pto Enable Page Gnd Zone #4 Page Gnd Zone #4 Page M GT MXD GMTG ISUZU 24F GT MXD C3 C3 C4 C4 C5 C M GT MXD GMTG ISUZU 38F GT MXD S GR LK ORN/LK WHT/LK TN ORN/LK YEL TXL TXL 0.5 TXL TXL 0.5 TXL 0.5 ISUZU ISUZU ISUZU ISUZU ISUZU ISUZU Gnd Sensor - aro vac_snsr 001 UPC FN R REF LOW REF 5V REF LOW REF 5V RIL Sensor - Rail Pressure rail_snsr 001 UPC FN OSCH: Y C C INE CONTROLS (LLY) CK EU Panel Set: 12 of X &LLY schematic sheet1 OJECT ID k43020d 153 $IVEDWORK/k43020d 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 3:30:28 pm Tuesday, December 9, 2003 ORGNIZTION CKMCE Panel Set: 12 K43020d_005_12

213 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Engine Controls: LLY 6.6L Diesel PGE D-11 ETC (Uh ec) Page EXT LIGHTING Uh ec Page INE CNTLS Pcm Page 8-20/ -8/12 INE CNTLS Pcm Page 8-20/ -8/12 15 &L18/KUP/JF4-L/LLY 1339 ETC_FD ETC_STOP ETC_ ETC_ -L/LLY LU LT -L/LLY ORN/LK -L/LLY 4. LU DK/WHT J1- J1-6 J1-12 J1-13 IGN1 LS ETC ETC NOTE LL GEN3 GET ETC THRU KUP RPO ETC MODULE NOTE GND MOTOR 1 MOTOR 2 5V DC 1 TPS1 TPS1 RTN 5V DC 2 TPS2 TPS2 RTN SNSR CKTS RE GOLD PLTED J1-15 J1-16 -L/LLY 581. YEL 0.8 TXL J1-8 J1-2 J1-1 J1-3 J1-9 -L/LLY 416. GR -L/LLY 452. LK J1-11 -L/LLY 486. PPL J1-10 &L18/KUP/JF4-L/LLY 5 ETC_GND -L/LLY 582. RN 0.8 TXL -L/LLY 485. GRN DK -L/LLY LU LT/LK -L/LLY 104. LK/WHT Gnd Zone #5 Page C H G D E F MTR MTR 5V DC 1 TPS1 TPS1 5V DC 2 TPS2 TPS2 1 2 RTN RTN Throttle Pos Snsr/ctuator Mtr thrposns_actmtr 001 UPC FN M THROTTLE POSITION #1 THROTTLE POSITION # ELECTRONIC THROTTLE CONTROL CK EU 03 X &L18/JF4/KUP k33021a Panel Set: 1 schematic sheet1 134 $IVEDWORK/k33021a 010 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 8:4:25 am Monday, September 9, 2002 ORGNIZTION CKMCE Panel Set: 1 K43020d_005_13

214 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Electronic Throttle Control PGE D-118 ETC (Uh ec) Page EXT LIGHTING Uh ec Page INE CNTLS Pcm Page 8-20/ -8/12 INE CNTLS Pcm Page 8-20/ -8/12 15 &L18/KUP/JF4-L/LLY 1339 ETC_FD ETC_STOP ETC_ ETC_ -L/LLY LU LT -L/LLY ORN/LK -L/LLY 4. LU DK/WHT J1- J1-6 J1-12 J1-13 IGN1 LS ETC ETC NOTE LL GEN3 GET ETC THRU KUP RPO ETC MODULE NOTE GND MOTOR 1 MOTOR 2 5V DC 1 TPS1 TPS1 RTN 5V DC 2 TPS2 TPS2 RTN SNSR CKTS RE GOLD PLTED J1-15 J1-16 -L/LLY 581. YEL 0.8 TXL J1-8 J1-2 J1-1 J1-3 J1-9 -L/LLY 416. GR -L/LLY 452. LK J1-11 -L/LLY 486. PPL J1-10 &L18/KUP/JF4-L/LLY 5 ETC_GND -L/LLY 582. RN 0.8 TXL -L/LLY 485. GRN DK -L/LLY LU LT/LK -L/LLY 104. LK/WHT Gnd Zone #5 Page C H G D E F MTR MTR 5V DC 1 TPS1 TPS1 5V DC 2 TPS2 TPS2 1 2 RTN RTN Throttle Pos Snsr/ctuator Mtr thrposns_actmtr 001 UPC FN M THROTTLE POSITION #1 THROTTLE POSITION # ELECTRONIC THROTTLE CONTROL CK EU 03 X &L18/JF4/KUP k33021a Panel Set: 1 schematic sheet1 134 $IVEDWORK/k33021a 010 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 8:4:25 am Monday, September 9, 2002 ORGNIZTION CKMCE Panel Set: 1 K33021a_010_01

215 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Electronic Throttle Control PGE D-119 Ign3 - Cruise (Lh ec) Page CRUISE_SW 18 PTO Pto Sw Page =&PTO 84 CRUZ_SET STRG Col sm - Cruise Cntrl Sw eau_cruise_sw 004 UPC FN NEUTRL ON OFF PO STEERING COLUMN PRT# PGE 8- TSI CRUISE FTP HORN IGN KEYIN PSSLOCK SIR 04-1 STEERWHL TRNHZ WER PTO Pto Sw Page =&PTO 39 CRUZ_ON =&PTO 84. LU DK PTO_SET =-PTO-K LU DK -L/LLY 84. LU DK J GR/LK S S =-PTO-K GR 0.35 L L TXL F GT M GT L/LLY -L/LLY GR/LK GR TXL 0.35 J1-5 J1-14 =&PTO 39. GR PTO_ON PTO Pto Sw Page SET COST RESUME/ CCEL ON/OFF ETC MODULE Elect Throttle Cntl Mdl elec_throt_cntl 001 UPC FN PTO Pto Sw Page NOTE PPS 1 RTN PPS 1 PPS 1 5V REF PPS 2 RTN PPS 2 PPS 2 5V REF PPS 3 RTN PPS 3 PPS 3 5V REF J J LL TERMINLS IN J1 RE GOLD PLTED J2-J J2-F J2-G J2- J2-C J2-D J2- J2-K J2-E ETC_RTN1 ETC_REF1 ETC_SIG2 ETC_RTN3 ETC_REF3 121 (Page 3/4) 1164 (Page 3/4) 1162 (Page 3/4) 123 (Page 3/4) 125 (Page 3/4) ETC_SIG1 ETC_RTN2 ETC_REF2 ETC_SIG (Page 3/4) 122 (Page 3/4) 124 (Page 3/4) 1163 (Page 3/4) RPO LEGEND JF4 - ELECT DJUSTLE PEDL NW - TRCTION CONTROL L18 - INE GS, 8 CYL, 8.1L KUP - ELECT THROTTLE CNTRL ELECTRONIC THROTTLE CONTROL CK EU 03 X &L18/JF4/KUP k33021a Panel Set: 2 schematic sheet1 134 $IVEDWORK/k33021a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 8:4:25 am ORGNIZTION 010 PROD 1 CKMCE Monday, September 9, 2002 Panel Set: 2 K33021a_010_02

216 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Electronic Throttle Control PGE D-120 NOTE: THIS PGE IS FOR SEO RKCLTCH HRNESS ETC_RTN1 ETC_SIG1 ETC_REF1 ETC_RTN2 ETC_SIG2 ETC_REF2 ETC_RTN3 ETC_SIG3 ETC_REF3 (Page 2) (Page 2) (Page 2) (Page 2) (Page 2) (Page 2) (Page 2) (Page 2) (Page 2) =&L18/KUP&SEO =&L18/KUP&SEO =&L18/KUP&SEO =&L18/KUP&SEO =&L18/KUP&SEOLU DK =&L18/KUP&SEO PPL =&L18/KUP&SEO TN =&L18/KUP&SEOGRN DK =&L18/KUP&SEO RN RKCLTCH WHT/LK RKCLTCH LU LT RKCLTCH ĠR RKCLTCH YEL/LK 0.35 TXL 0.35 TXL RKCLTCH RKCLTCH RKCLTCH RKCLTCH RKCLTCH CONTROLS ECM Page 8-20D - CONTROLS ECM Page 8-20D - CONTROLS ECM Page 8-20D - CONTROLS ECM Page 8-20D - CONTROLS ECM Page 8-20D PPS_RTN1 CONTROLS ECM Page 8-20D PPS_REF PPS_SIG2 123 PPS_RTN3 CONTROLS CONTROLS CONTROLS ECM ECM ECM Page 8-20D - Page 8-20D - Page 8-20D PPS_REF PPS_SIG1 122 PPS_RTN2 124 PPS_REF PPS_SIG3 =&L/LLY&SEO 121. RN RKCLTCH =&L/LLY&SEO WHT/LK RKCLTCH =&L/LLY&SEO LU LT RKCLTCH =&L/LLY&SEO 123. GR RKCLTCH =&L/LLY&SEO 125. YEL/LK RKCLTCH =&L/LLY&SEO LU DK RKCLTCH =&L/LLY&SEO 122. PPL RKCLTCH =&L/LLY&SEO 124 ṪN RKCLTCH =&L/LLY&SEO GRN DK RKCLTCH L18 L/LLY L18 L/LLY L18 L/LLY L18 LLLY L18 L/LLY L18 L/LLY L18 L/LLY L18 L/LLY L18 L/LLY E F G C D K J PPS 1 RTN PPS 1 PPS 1 5V REF PPS 2 RTN PPS 2 PPS 2 5V REF PPS 3 RTN PPS 3 PPS 3 5V REF Pedal Position Sensor ped_pos_sensor 001 UPC FN PPS MODULE ELECTRONIC THROTTLE CONTROL 03 X &L18/JF4/KUP k33021a CK EU Panel Set: 3 schematic sheet1 134 $IVEDWORK/k33021a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 8:4:25 am ORGNIZTION 010 PROD 1 CKMCE Monday, September 9, 2002 Panel Set: 3 K33021a_010_03

217 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Electronic Throttle Control PGE D-121 NOTE: THIS PGE IS FOR ETCJPR HRNESS ETC_RTN1 ETC_SIG1 ETC_REF1 (Page 2) (Page 2) (Page 2) ETC_RTN2 ETC_SIG2 ETC_REF2 ETC_RTN3 ETC_SIG3 ETC_REF3 (Page 2) (Page 2) (Page 2) (Page 2) (Page 2) (Page 2) =&L18/KUP-SEO =&L18/KUP-SEO =&L18/KUP-SEO =&L18/KUP-SEO =&L18/KUP-SEOLU DK =&L18/KUP-SEO PPL =&L18/KUP-SEO TN =&L18/KUP-SEOGRN DK =&L18/KUP-SEO RN ETCJPR WHT/LK ETCJPR LU LT ETCJPR GR ETCJPR YEL/LK TXL 0.35 TXL 0.35 ETCJPR ETCJPR ETCJPR ETCJPR ETCJPR CONTROLS ECM Page 8-20D - CONTROLS ECM Page 8-20D - CONTROLS ECM Page 8-20D - CONTROLS ECM Page 8-20D - CONTROLS ECM Page 8-20D PPS_RTN1 CONTROLS ECM Page 8-20D PPS_REF PPS_SIG2 123 PPS_RTN3 125 PPS_REF3 CONTROLS ECM CONTROLS ECM CONTROLS ECM Page 8-20D - Page 8-20D - Page 8-20D PPS_SIG1 122 PPS_RTN2 124 PPS_REF PPS_SIG3 =&L/LLY-SEO 121. RN ETCJPR =&L/LLY-SEO WHT/LK ETCJPR =&L/LLY-SEO LU LT ETCJPR =&L/LLY-SEO 123 ĠR ETCJPR =&L/LLY-SEO 125. YEL/LK ETCJPR =&L/LLY-SEO LU DK ETCJPR =&L/LLY-SEO 122. PPL ETCJPR =&L/LLY-SEO 124. TN ETCJPR =&L/LLY-SEO GRN DK ETCJPR L18 L/LLY L18 L/LLY L18 L/LLY L18 L/LLY L18 L/LLY L18 L/LLY L18 L/LLY L18 L/LLY L18 L/LLY E F G C D K J PPS 1 RTN PPS 1 PPS 1 5V REF PPS 2 RTN PPS 2 PPS 2 5V REF PPS 3 RTN PPS 3 PPS 3 5V REF Pedal Position Sensor ped_pos_sensor 001 UPC FN PPS MODULE ELECTRONIC THROTTLE CONTROL CK EU 03 X &L18/JF4/KUP k33021a Panel Set: 4 schematic sheet1 134 $IVEDWORK/k33021a 010 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 8:4:25 am Monday, September 9, 2002 ORGNIZTION CKMCE Panel Set: 4 K33021a_010_04

218 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Fuel Sender/Pump: Gas Engines (03/43/53/06) PGE D-122 INE CONTROLS Pcm Page 8-20//C -9/15/12 INE CONTROLS Pcm Page 8-20//C -9/15/12 INE CONTROLS Pcm Page 8-20//C -9/15/12 INE CONTROLS Pcm Page 8-20//C -9/15/ PRIM_FRLY J2- Pcm (Ubec) Page lk sm - Ubec Fuel Pump Rly ubec_ UPC FN FLVL_PRIM FUEL_EV FUEL_VREFR FPMP_RLY Primary Fuel Rly &L18/LM/LQ4/LQ9/LR4/LU3&EV #&L18/LM/LQ4/LQ9/LR4/LU3-NQZ-EV &NQZ-EV 5 85 FPRLY_GND PRIME PPL &EV 40. LK 0.5 GXL CHSSIS =&03/43/53/06&L18/LM/LQ4/LQ9/LR4/LU3&EV-T89#&03/43/53/06&L18/LM/LQ4/LQ9/LR4/LU3-EV-NQZ-T LK 0.5 GXL CHSSIS Gnd Zone #5 Page CHSSIS K K M GT INE CHSSIS 12F GT S40 &03/43/53/06&NQZ-EV 40. LK 0.5 GXL CHSSIS J3-F1 &03/43/53/ GR 1.0 GXL 19 CHSSIS SEC_RLY 120 (Page 2) &03/43/53/ PPL 0.5 GXL CHSSIS &03/43/53-NQZ 40. LK 0.5 GXL CHSSIS =&03/43/53/06&L18/LM/LQ4/LQ9/LR4/LU3&EV-T89#&03/43/53/06&L18/LM/LQ4/LQ9/LR4/LU3-EV-NQZ-T LK 0.5 GXL CHSSIS M PWR F:2 E:40 FLVL Prim Fuel/Pump sm eau_fpmp_e 001 UPC FN SEC_FRTN (Page 2) GND RTN C D &03/43/53/ LK 1.0 GXL 19 CHSSIS FPMP_GND Panel Set: Gnd Zone #21 Page FUEL SNDR/PUMP (03/43/53/06&GS INES) CK EU 03 X &L18/LM/LQ4/LQ9/LR4/LU3-T89 k33022e 1 schematic sheet1 $IVEDWORK/k33022e 005 REVISION VERSION 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 LST CHNGED Y Wednesday, pril 3, :33:30 am ORGNIZTION CKMC03 Panel Set: 1 K33022e_005_01

219 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Fuel Sender/Pump: Gas Engines (03/43/53/06) PGE D-123 SEC_RLY (Page 1) &03/43/53-NQZ 120. GR 0.8 GXL CHSSIS PCMI (Uh ec) Page INE CONTROLS Pcm Page 8-20//C -9/15 15 SEC_FRLY1 FLVL_SEC &03/43/53-NQZ 439. PNK 0.5 GXL CHSSIS &03/43/53-NQZ LU DK Sec Fuel Relay sec_fuel_rly 001 UPC FN H H M GT INE CHSSIS 12F GT &03/43/53-NQZ TN 0.5 GXL CHSSIS &03/43/53-NQZ GRN LT 0.8 GXL CHSSIS &03/43/53-NQZ LU DK 0.5 GXL CHSSIS F GT CHSSIS INE 12M GT M PWR GND F:2 E:40 FLVL RTN Sec Fuel/Pump sm eau_fpmp_e 001 UPC FN C D &03/43/53-NQZ TN SEC_FRTN 40 (Page 1) SEC_PUMP 21 SEC_GND1 INE CONTROLS Pcm - Sec Fuel Rly Page 8-20//C -9/15 Gnd Zone #21 Page FUEL SNDR/PUMP (03/43/53/06&GS INES) CK EU 03 X &L18/LM/LQ4/LQ9/LR4/LU3-T89 k33022e Panel Set: 2 schematic sheet1 $IVEDWORK/k33022e 005 REVISION VERSION 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 LST CHNGED Y Wednesday, pril 3, :33:30 am ORGNIZTION CKMC03 Panel Set: 2 K33022e_005_02

220 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Fuel Sender/Pump: Gas Engines (L59) PGE D-124 INE CONTROLS Pcm Page PRIM_FRLY J2- Pcm (Ubec) Page lk sm - Ubec Fuel Pump Rly ubec_ UPC FN INE CONTROLS Pcm Page INE CONTROLS Pcm Page INE CONTROLS Pcm Page FPMP_RLY FLVL_PRIM FUEL_EV FUEL_VREFR Primary Fuel Rly FPRLY_GND PRIME PPL K K M GT INE CHSSIS 12F GT &EV -EV Gnd Zone #5 Page CHSSIS PPL 0.5 GXL CHSSIS &EV 40. LK 0.5 GXL CHSSIS &EV 40. LK 0.5 GXL CHSSIS 120. GR 1.0 GXL CHSSIS J3-F1 19 S40 -EV 40. LK 0.5 GXL CHSSIS 1 4 &EV 40. LK M PWR F:2 E:40 FLVL Prim Fuel/Pump sm eau_fpmp_f 001 UPC FN 0.5 GXL CHSSIS GND RTN LK 1.0 GXL CHSSIS 19 FPMP_GND Gnd Zone #21 Page FUEL SNDR/PUMP (L59 INES) CK EU 03 X &L59 k33022f Panel Set: 1 schematic sheet1 36 $IVEDWORK/k33022f 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE 10:15:3 am ORGNIZTION PROD 1 Graeme Dobbs CKMC03 Wednesday, pril 3, 2002 Panel Set: 1 K33022f_005_01

221 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Fuel Sender/Pump: Gas Engines (906/36) PGE D-125 INE CONTROLS Pcm Page 8-20//C -9/15/12 INE CONTROLS Pcm Page 8-20//C -9/15/12 CONTROLS Fuel Tank Sensor Page 8-20//C -9/15/12 CONTROLS Pcm Page 8-20//C -9/15/ PRIM_FRLY FLVL_PRIM FUEL_EV FUEL_VREFR J2- Pcm (Ubec) Page lk sm - Ubec Fuel Pump Rly ubec_ UPC FN FPMP_RLY PPL Primary Fuel Rly K K M GT INE CHSSIS 12F GT &L18&EV#&L18-NQZ-EV &NQZ-EV =&L18/LM/LQ4/LQ9/LR4/LU3&906/36&EV-T89#&L18/LM/LQ4/LQ9/LR4/LU3&906/36-NQZ-EV-T LK 0.5 GXL CHSSIS 5 FPRLY_GND PRIME Gnd Zone #5 Page CHSSIS J3-F1 SEC_RLY &906/ PPL 0.5 GXL CHSSIS &EV 40. LK 0.5 GXL CHSSIS &906/36&NQZ-EV 40. LK 0.5 GXL CHSSIS &906/ GR 1.0 GXL 19 CHSSIS D 120 (Page 2) S40 M PWR F:2 E:40 FLVL Prim Fuel/Pump sm eau_fpmp_g 001 UPC FN &906/36-NQZ 40. LK 0.5 GXL CHSSIS =&L18/LM/LQ4/LQ9/LR4/LU3&906/36&EV-T89#&L18/LM/LQ4/LQ9/LR4/LU3&906/36-NQZ-EV-T LK 0.5 GXL CHSSIS GND RTN SEC_FRTN (Page 2) C &906/ LK 1.0 GXL 19 CHSSIS FPMP_GND Gnd Zone #21 Page FUEL SNDR/PUMP (906/36&GS INES) CK EU 03 X &L18/LM/LQ4/LQ9/LR4/LU3-T89 k33022g Panel Set: 1 schematic sheet1 36 $IVEDWORK/k33022g & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 9:41:09 am ORGNIZTION 005 PROD 1 CKMC03 Wednesday, pril 3, 2002 Panel Set: 1 K33022g_005_01

222 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Fuel Sender/Pump: Gas Engines (906/36) PGE D-126 SEC_RLY (Page 1) &906/36-NQZ 120. GR 0.8 GXL CHSSIS PCMI (Uh ec) Page INE CONTROLS Pcm Page 8-20/ -9/15 15 SEC_FRLY1 &906/36-NQZ 439. PNK 0.5 GXL CHSSIS FLVL_SEC &906/36-NQZ LU DK Sec Fuel Relay sec_fuel_rly 001 UPC FN H H M GT INE CHSSIS 12F GT &906/36-NQZ TN &906/36-NQZ GRN LT GXL GXL CHSSIS CHSSIS &906/36-NQZ LU DK 0.5 GXL CHSSIS D F GT CHSSIS INE 12M GT M PWR GND F:2 E:40 FLVL RTN Sec Fuel/Pump sm eau_fpmp_g 001 UPC FN C 21 SEC_GND2 &906/36-NQZ TN Gnd Zone #21 Page SEC_PUMP SEC_FRTN 40 (Page 1) INE CONTROLS Pcm - Sec Fuel Rly Page 8-20/ -9/15 FUEL SNDR/PUMP (906/36&GS INES) 03 X &L18/LM/LQ4/LQ9/LR4/LU3-T89 k33022g CK EU Panel Set: 2 schematic sheet1 36 $IVEDWORK/k33022g & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 9:41:09 am ORGNIZTION 005 PROD 1 CKMC03 Wednesday, pril 3, 2002 Panel Set: 2 K33022g_005_02

223 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Fuel Sender/Pump: Diesel Engines PGE D-12 INE CONTROLS Ecm Page 8-20D -9 INE CONTROLS Ecm Page 8-20D -9 INE CONTROLS Ecm Page 8-20D -9 -NQZ 465 PRIM_FRLY J2- FLVL_PRIM FLVL_SEC Ecm (Ubec) Page lk sm - Ubec Fuel Pump Rly ubec_ UPC FN PPL LU DK 440 FPMP_RLY Primary Fuel Rly K K H H M GT INE CHSSIS 12F GT FPRLY_GND PRIME FUEL/PUMP PRIME (TOP HOUSING) PPL 0.5 GXL CHSSIS -NQZ LU DK 0.5 GXL CHSSIS Gnd Zone #5 Page CHSSIS F:2 E:40 FLVL Prim Fuel Sender-Dsl fuel_sndr 001 UPC FN F:2 E:40 FLVL Sec Fuel Sender-Dsl fuel_sndr 001 UPC FN J3-F1 -NQZ 120. GR 1.0 GXL 19 CHSSIS PWR M GND Transfer Fuel Pump fuel_pump_dsl 001 UPC FN &NQZ &NQZ 40. LK 0.5 GXL CHSSIS RTN D -NQZ -NQZ 40. LK 0.5 GXL CHSSIS RTN D -NQZ 40. LK 0.5 GXL CHSSIS S40 -NQZ 21. LK 1.0 GXL 19 CHSSIS FPMP_GND INE CONTROLS Ecm-Sender Rtn Page 8-20D -9 -NQZ 40. LK 0.5 GXL CHSSIS Gnd Zone #21 Page FLVL_RTN1 J J F GT CHSISS INE 12M GT FUEL SNDR/PUMP (DIESEL INES) CK EU 03 X &L k33022b Panel Set: 1 schematic sheet1 114 $IVEDWORK/k33022b 008 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 Wednesday, pril 3, :31:06 am ORGNIZTION CKMC03 Panel Set: 1 K33022b_008_01

224 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Take Off Provisions (L18/L) PGE D-128 at-fog Lp(Uh) Page 8-10/ -5/3 15 INE CONTROLS Pcm/Ecm Page 8-20/D PTO_RLY 2562 PTO_GE Relay sm-pto pto_rly 001 UPC FN CNTLS Pcm/Ecm Page 8-20/D -12 CNTLS Pcm/Ecm Page 8-20/D PTO_ENLE 494 PTO DIS CNTLS Pcm/Ecm Page 8-20/D -12 LLISON TRNS Tcm Page TCM_PTOFDK 2522 PTO_FDK PTO_SW (Page 2) 488. GRN LT &M YEL 84. LU DK 0.8 TXL S488 S WHT 0.8 TXL 488. GRN LT 488. GRN LT 0.8 TXL YEL YEL 0.8 TXL SW_EN SW_FCK (Page 2) (Page 2) D D H H C C G G J J F M/P 1 SLD INE PTOJMPR 10M M/P 1 SLD LK 0.8 TXL PTOJMPR WHT 0.8 TXL PTOJMPR 488. GRN LT 0.8 TXL PTOJMPR 494. LU LT 0.8 TXL PTOJMPR YEL 0.8 TXL PTOJMPR 84. LU DK 0.8 TXL PTOJMPR 5 PTO_GND lunt Cut bluntcut 003 UPC FN 5 lunt Cut bluntcut 003 UPC FN 2561 lunt Cut bluntcut 003 UPC FN 488 lunt Cut bluntcut 003 UPC FN 494 lunt Cut bluntcut 003 UPC FN 2522 lunt Cut bluntcut 003 UPC FN 84 Gnd Zone #5 Page OJECT ID PTO PROVISIONS(L18/L) CK EU 03 X &PTO k33023a Panel Set: 1 schematic sheet1 8 $IVEDWORK/k33023a 006 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE ET 1 Friday, October 19, :13:42 am ORGNIZTION CKMC03 Panel Set: 1 K33023a_006_01

225 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Take Off Provisions (L18/L) PGE D-129 PTO_SW 84 (Page 1) ETC/ CNTLS Etc/Ecm Page 8-21/20/D -2/12/6 ETC/ CNTLS Etc/Ecm Page 8-21/20/D -2/12/6 E E F GT 1 INE 6M GT CRUZ_SET 84 PTO_SET 84. LU DK 84. LU DK S84 Ign3-Cruise(Lbec) Page 8-10/ -12/10 10 EXTERIOR LIGHTING Int Prk Fuse (Ubec) Page 8-110/ -1 DIMMING CNTL 230 Mbec Page CRUISEMDL_PTO PTO_DIM 230 PTO_KLT SW_EN 488 (Page 1) F GT 1 C INE C 6M GT GRN LT ETC/ CNTLS Etc/Pcm Page 8-21/20/D -2/12/6 CRUZ_ON 39. GR ETC/ CNTLS Etc/Pcm Page 8-21/20/D -2/12/ GR 0.35 TWP PTO_ON S RN ON/OFF 84. LU DK G SET RELY RN 0.35 TWP LOGIC DIM FDK D E F H YEL 0.35 TXL ILLUM C KLT GND Sw sm-pto pto_sw 002 UPC FN M GT 1 INE 6F GT PTOSW_GND SW_FCK 2522 (Page 1) Gnd Zone #18 Page OJECT ID PTO PROVISIONS(L18/L) CK EU 03 X &PTO k33023a Panel Set: 2 schematic sheet1 8 $IVEDWORK/k33023a 006 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE ET 1 Friday, October 19, :13:42 am ORGNIZTION CKMC03 Panel Set: 2 K33023a_006_02

226 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LCT Transmission (L18/L/M4) PGE D-130 PO TISS PRT# PCM TRNS PGE INE OUTPUT SPEED SNSR SPD TURINE SPEED SENSOR TURS TRNS OUTPUT SPEED SNSR TOSS Pcm (Uh ec) Page 8-10/ -4/2 20 Ign0 (Lh ec) Page 8-10/ -12/12 10 INE CNTRLS Can Link Page 8-20D -4 &L&M4 INE CNTRLS Can Link Page 8-20D -4 &L&M4 INE CNTRLS Pcm/Ecm Page 8-20/D - 2 &L18&M4 LO J4- HI J4- LO J2- HI J2- LO J1- HI J1- TCM_T 1020 TRNSPWR CNHI 2362 CNLO 400 REP_TOSSHI Ign0 (Lh ec) Page 8-10/ -12/12 SERIL DT LINK Class 2 Page M4 TRNSPWR1 CL2_TCM &L18/L &L ORN PNK 0.8 TXL 0.8 TXL &L18/L 240. YEL &L18/L RED/LK &L18/L ORN &L18/L 821. PPL/WHT &L18/L LU DK/WHT &L18/L LU LT &L18/L 822. GRN LT/LK J1-3 J1-2 J1-4 J1-30 J1-29 J1-32 J1-31 J1-18 J1-2 J2-18 J2-1 J2-14 J2-13 J2-16 J2-15 TT IGN0 V12 V12 IGN_FM GND IGN0 GND CLSS II J18 DT LINK STTUS PTO STTUS SERV RK HI PTO UTO NTRL LO J1939 GPI4 SHIELD SEC SHIFT SCHEDULE RNGE INHIIT GPI6 IDH3E LO HI REPLICTED TOSS RETRD ENLE GPI IDH3E S GPI8 IDH3E LO HI TRNS INPUT SPEED LCT TCM GPI9 IDH3E NLOG GND LO TUR SPEED PRNDL IDH3 HI PRNDL IDH3 LO HI TRNS OUTPUT SPEED PRNDL C PRNDL P IDH3 IDH3 J1-1 J1-5 J1-6 J1- J1-8 J1-9 J1-10 J1-11 J1-12 J1-13 J1-14 J1-28 J2-5 J2-6 J2- J2-8 &L WHT 0.5 TXL 451 TCM_GND2 420 TCC_RK WD_LO 1 TCM_ 3 TCM_C Gnd Zone #4 Page RKES Tcc rake Page 8-44C -2 INE CNTRLS Pcm/Ecm Page 8-20/D -11/2 INE CNTRLS PRNDL Page 8-20/D -11 INE CNTRLS PRNDLC Page 8-20/D TCM_GND TCM_PTOFDK UNMN_TORQ 2 TCM_ 6 TCM_P Gnd Zone #4 Page PTO Pto Status Page INE CNTRLS INE CNTRLS Pcm PRNDL Page Page 8-20/D -11 INE CNTRLS PRNDLP Page 8-20/D -11 LCT TRNSMISSION (&L18/L&M4) CK EU 03 X &M4 k3302a Panel Set: 1 schematic sheet1 123 $IVEDWORK/k3302a 00 REVISION 00 STGE PROD VERSION 1 LST CHNGED Y Friday, July 19, :11:04 pm ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K3302a_00_01

227 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LCT Transmission (L18/L/M4) PGE D-131 FORCE MOTOR 1 SOL SOL C SOL D SOL E LOCKUP SOL F PRESSURE SWITCH MNIFOLD SUMP TEMP SENSOR FORCE MOTOR 1 SOL llison Trans eau_m4lct 003 UPC FN C D E REV TRNS ID J J J J J3-N J3-P J3-C J3- J3- J3-W J3-J J3-S J3-D J3-F J3-E J3-K J3-G J3-H J3-T J3-L J3-M &L18/L PNK/LK 0.8 TXL &L18/L 323. RN 0.8 TXL &L18/L YEL/LK 0.8 TXL &L18/L 418. RN 0.8 TXL &L18/L PNK &L18/L RED &L18/L 122. YEL/LK &L18/L 241. PPL 0.8 TXL &L18/L RED/LK 0.8 TXL &L18/L RN/WHT 0.8 TXL &L18/L GRN LT 0.8 TXL &L18/L 252. ORN/WHT 0.8 TXL &L18/L GRN DK/WHT 0.8 TXL &L18/L LU DK &L18/L GRN LT/LK &L18/L 262. LK &L18/L LU LT/WHT 0.8 TXL J2-24 J2-25 J2-31 J2-26 J2-2 J2-28 J2-29 J2-32 J2-1 J2-2 J2-3 J2-4 J2-10 J2-20 J2-11 J2-21 J2-22 J2-23 IGN_FM FM HI MNGED TORQ FM LO GPO1 V12 GPO2 C SW GND REQ TORQ D SW GND E SW GND GPO6 F SW GND GPO5 RNGE IND V12 CHECK TRNS PSM C PSM D LCT TCM PSM E PSM REV TPS SIG ILLC SUMP TEMP V5 NLOG GND RETRDER REQUEST ILLC RETRD TEMP V5 TRNS I/O IGN_FM FM HI FM LO Trans Control Module eau_m4tcm 001 UPC FN J J J1-16 J1-19 J1-20 J1-22 J1-24 J1-23 J1-21 J1-25 J2-30 J2-9 J2-19 J1-15 J TORQ_MN_TCM 463 TORQ_REQ_TCM 2466 MIL_REQ &L18 &L18 &L18/L INE CNTRLS Pcm - L18 Page INE CNTRLS Pcm - L18 Page INE CNTRLS Pcm/Ecm Page 8-20/D -4/2 LCT TRNSMISSION (&L18/L&M4) CK EU 03 X &M4 k3302a Panel Set: 2 schematic sheet1 123 $IVEDWORK/k3302a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:11:04 pm ORGNIZTION 00 PROD 1 CKMC03 Friday, July 19, 2002 Panel Set: 2 K3302a_00_02

228 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LCT Transmission (L18/LLY/M4) PGE D-132 PO TISS PRT# PCM TRNS PGE INE OUTPUT SPEED SNSR SPD TURINE SPEED SENSOR TURS TRNS OUTPUT SPEED SNSR TOSS Pcm /Ecm (Uh ec) Page 8-10/ -4/2 =&L18&M4# 20 &LLY&M4 Ign0 (Lh ec) Page 8-10/-14/12 10 =&L18&M4# &LLY&M4 INE CNTRLS Can Link Page 8-20D -4 =&L18&M4# &LLY&M4 INE CNTRLS Can Link Page 8-20D -4 =&L18&M4# &LLY&M4 INE CNTRLS Pcm/Ecm Page 8-20/D - 2 =&L18&M4# &LLY&M4 LO J4- HI J4- LO J2- HI J2- LO J1- HI J1- TCM_T 1020 TRNSPWR CNHI 2362 CNLO 400 REP_TOSSHI Ign0 (Lh ec) Page 8-10/ -14/12 SERIL DT LINK Class 2 Page M4 TRNSPWR1 CL2_TCM 440. ORN 0.8 TXL &L PNK 0.8 TXL 240. YEL 0.35 TXL RED/LK ORN 0.5 TXL 821. PPL/WHT LU DK/WHT LU LT 0.5 TXL 822. GRN LT/LK J1-3 J1-2 J1-4 J1-30 J1-29 J1-32 J1-31 J1-18 J1-2 J1-26 J2-18 J2-1 J2-14 J2-13 J2-16 J2-15 TT IGN0 V12 V12 IGN_FM GND IGN0 GND CLSS II J18 DT LINK STTUS PTO STTUS SERV RK HI PTO UTO NTRL LO J1939 GPI4 SHIELD SEC SHIFT SCHEDULE LO HI REPLICTED TOSS RNGE INHIIT GPI6 IDH3E RETRD ENLE GPI IDH3E 16 PPR S GPI8 IDH3E LO HI TRNS INPUT SPEED LCT TCM GPI9 IDH3E NLOG GND LO TUR SPEED PRNDL IDH3 HI PRNDL IDH3 LO HI TRNS OUTPUT SPEED PRNDL C PRNDL P IDH3 IDH3 J1-1 J1-5 J1-6 J1- J1-8 J1-9 J1-10 J1-11 J1-12 J1-13 J1-14 J1-28 J2-5 J2-6 J2- J2-8 &L WHT 0.5 TXL 451 TCM_GND2 420 TCC_RK WD_LO 1 TCM_ 3 TCM_C =&L18# &LLY =&L18# &LLY =&L18# &LLY =&L18# &LLY =&L18# &LLY Gnd Zone #4 Page RKES Tcc rake Page 8-44C -1 INE CNTRLS Pcm/Ecm Page 8-20/D -11/2 INE CNTRLS PRNDL Page 8-20/D -11 INE CNTRLS PRNDLC Page 8-20/D TCM_GND TCM_PTOFDK UNMN_TORQ 2 TCM_ 6 TCM_P =&L18# &LLY =&L18# &LLY =&L18# &LLY =&L18# &LLY =&L18# &LLY Gnd Zone #4 Page PTO Pto Status Page INE CNTRLS Pcm Page INE CNTRLS PRNDL Page 8-20/D -11 INE CNTRLS PRNDLP Page 8-20/D -11 LCT TRNSMISSION (&L18/LLY&M4) CK EU 04 X &M4 Panel Set: 1 of 3 schematic sheet1 22 $IVEDWORK/k4302a 004 OJECT ID REVISION STGE VERSION LST CHNGED Y 3:0:24 pm k4302a 004 PROD 1 Wednesday, ugust 2, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 1 K4302a_004_01

229 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL LCT Transmission (L18/LLY/M4) PGE D-133 FORCE MOTOR 1 SOL (PCS) SOL C (ON/OFF) SOL D (ON/OFF) SOL E (ON/OFF) LOCKUP SOL F (PWM) MIN PRESS MODULTION SOL G (PWM) PRESSURE SWITCH MNIFOLD SUMP TEMP SENSOR FORCE MOTOR 1 SOL (PCS) llison Trans 04_m4lct 003 UPC FN C D E REV TRNS ID J J J J J3-N J3-P J3-C J3- J3- J3-W J3-J J3-S J3-R J3-D J3-F J3-E J3-K J3-G J3-H J3-T J3-L J3-M PNK/LK 0.8 TXL RN YEL/LK RN LU DK LU DK GRN LT/LK LK 0.8 TXL 0.8 TXL TXL TXL TXL TXL LU LT/WHT 0.8 TXL RN/WHT 0.8 TXL GRN LT 0.8 TXL 252. ORN/WHT 0.8 TXL GRN DK/WHT 0.8 TXL PNK RED 122. YEL/LK 241. PPL 0.8 TXL RED/LK 0.8 TXL J2-24 J2-25 J2-31 J2-26 J2-2 J2-28 J2-29 J2-32 J2-30 J2-1 J2-2 J2-3 J2-4 J2-10 J2-20 J2-11 J2-21 J2-22 J2-23 IGN_FM FM HI MNGED TORQ FM LO GPO1 V12 GPO2 C SW GND REQ TORQ D SW GND E SW GND GPO6 F SW GND GPO5 V12 MIN PRESSURE MODULTION RNGE IND CHECK TRNS PSM C PSM D LCT TCM PSM E PSM REV TPS SIG ILLC SUMP TEMP TPS V5 NLOG GND RETRD TEMP RETRDER REQUEST ILLC V5 TRNS I/O IGN_FM FM HI FM LO Trans Control Module 04_m4tcm 001 UPC FN J J J1-16 J1-19 J1-20 J1-22 J1-24 J1-23 J1-21 J1-25 J2-9 J2-19 J1-15 J TORQ_MN_TCM 463 TORQ_REQ_TCM 2466 MIL_REQ &L18 &L18 =&L18# &LLY INE CNTRLS Pcm - L18 Page INE CNTRLS Pcm - L18 Page INE CNTRLS Pcm/Ecm Page 8-20/D-4/2 LCT TRNSMISSION (&L18/LLY&M4) CK EU 04 X &M4 Panel Set: 2 of 3 schematic sheet1 22 $IVEDWORK/k4302a 004 OJECT ID REVISION STGE VERSION LST CHNGED Y 3:0:24 pm ORGNIZTION k4302a 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMCE Wednesday, ugust 2, 2003 Panel Set: 2 K4302a_004_02

230 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Starting and Charging: Gas PGE D-134 att Ign Page 8-10/ -3/2 lk sm - Ubec Starter Rly ubec_ UPC FN 40 T_POS 142 RLY_T (Page 2) Start Rly S =&L18 1. RED 32.0 SIL 192 TPOS =&L59/LM/LQ4/LQ9/LR4/LU3-8Y9 1. RED 32.0 SGX 192 TPOS J1-11 J2-F11 J2-D12 J2-D11 IGN1-IGNE (UH) Page 8-10/ CLUTCH_MN =&MG5/ML6/MW3-JF GRN DK =&MG5/ML6/MW3-JF GRN DK RKCLTCH C C M GT 1/280 RKCLTCH 12F GT 1/ D Man Cltch Sw-tm Of Trvl cltch_sw_btm 001 INE CNTRL 12E 1 Pcm - Cltch/Ntrl Start Sw Page C =&MG5/ML6/MW3-JF PNK RKCLTCH F GT 1/280 RKCLTCH 12M GT 1/ =&MG5/ML6/MW3-JF PNK &M30/M32/M4/MN8/MT GRN DK &MG5/ML6/MW J2-G GRN DK PO NSU SW PRT # PGE 8- NSU-Start Sw STRT eau_nsbu_sw 001 TSI UPC FN CLTCH_NTRL J2-E J &M30/M32/M4/MN8/MT PNK PO CLUTCH SW PRT # PGE 8- STRT 30-1 PCM/ECM 20-4 RKE 44-2 INE CNTRL Pcm - Stat Sol Rly Page IGN1-IGNE (UH) Page 8-10/ STRT_RLY NSU_UTO S_CSE L18 =&L18 6. PPL 3.0 ETFE 19 Ring Term - L18 Starter UPC FN Starter Case Page GEN3 =&L59/LM/LQ4/LQ9/LR4/LU3 6. PPL 3.0 TXL 19 L18 Ring Term - Gen3 Starter UPC FN &5X GEN3&LU3&L59 Ring Terminal Starter UPC FN DUL_TT1 (PGE 3) UX TTERY WRECKER PCKGE S Motor Starter V Ring Term-Wrecker Pack 6Y UPC FN Ring Term-ux at M UPC FN &TP2/80 2. _CSE RED 13.0 STT 5 TPOS STRTER_GND UX_T2 UX/DUL TTERY ux/dual Relay Page UX_T1 WRECKER PCKGE ux at Page 8-110C -1 STRTING & CHRGING (GS) CK EU 03 X &L18/L59/LM/LQ4/LQ9/LR4/LU3 Panel Set: 1 schematic sheet1 264 k33030a $IVEDWORK/k33030a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 2:38:59 pm ORGNIZTION 009 PROD 1 CKMC03 Thursday, ugust 8, 2002 Panel Set: 1 K33030a_009_01

231 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Starting and Charging: Gas PGE D-135 lock sm-at Pos Cbl Junct pe T_POS 1 (Page 1) 1. RED 19.0 STX 113 TPOS Ring Terminal - Junct lk Ctr Strip UPC FN =&LM/L59&8Y9 1. RED 32.0 SGX 192 TPOS DUL_TT2 (PGE 3) 1. RED 32.0 TPOS SGX P Prim attery 1 batt1 001 UPC FN Ring Term - QS4M Megafuse UPC FN =&L59/LM/LQ4/LQ9/LR4/LU3&NYS 1. RED 13.0 STX 5 TPOS QS4M - Megafuse-125 mega_125a 001 UPC FN 125MPS 1042 QS4_T Ring Term-QS4at FN UPC L18&LU3 =&L18/LU3 1. RED 8.0 FUSELINK 3 TPOS S001 =&L18/LU3 1. RED 19.0 STX 113 TPOS Ring Term - Junct lk UPC FN GEN3&L59 =&L59/LM/LQ4/LQ9/LR4 1. RED 8.0 FUSELINK 3 TPOS Ring Term - Gen UPC FN INE CONTROLS Pcm Page 8-20//C -4 INE CONTROLS Pcm Page 8-20//C -4 Ring Term - Uhbec UPC FN - N N 1 T_PWR P FOUR WHEEL STEERING QS4 Module Page Ring Terminal-L18/LU UPC FN GEN W/S GEN W/O S LT_FTERM -S 23. GR &S 23. GR -S 25. RN 0.8 TXL TXL TXL FTERM (Page 3) LT_LTERM &S 25. RN 0.8 TXL LTERM (Page 3) Uhbec Page 8-10/ -2/1 &9L4. LK 5.0 TXL 19 TNEG 1. LK 8.0 TXL TNEG 19 -LU3 =-LU3 6. LK 32.0 SGX 192 TNEG &LU3 =&LU3 6. LK 32.0 SGX 192 TNEG T_GEN (Page 3) STTOR G 3 ~ PHSE T D DC SENSE C SENSE C FIELD LMP DRIVER TURN ON INPUT Generator sm gener_lfterm 001 6Y F M/P 480 TNEG CSRYJPR 2M M/P FIELD (ROTOR) CSE CS SEORLY_GND T_ZONE1 T_ZONE6 LU3_NEG LT_GND &9L4 MOILE RDIO SEO Relay Fuse Center Page Gnd Zone #1 Page Gnd Zone #6 Page Gnd Zone #6 LU3 at Neg Page Case Gnd Page STRTING & CHRGING (GS) CK EU 03 X &L18/L59/LM/LQ4/LQ9/LR4/LU3 Panel Set: 2 schematic sheet1 264 k33030a $IVEDWORK/k33030a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 2:38:59 pm ORGNIZTION 009 PROD 1 CKMC03 Thursday, ugust 8, 2002 Panel Set: 2 K33030a_009_02

232 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Starting and Charging: Gas PGE D-136 SUPPLEMENTL RKE SSIST S Mdl Page 8-44D -1 LTERM 25 (Page 2) _ON FTERM 23 (Page 2) &S RN T_GEN (Page 2) T D C STTOR G 3 ~ PHSE DC SENSE C SENSE FIELD LMP DRIVER TURN ON INPUT Generator sm-w/s gener_sba 001 6Y 1 00 DUL_TT2 1 (PGE 2) FIELD (ROTOR) CSE LT_GND CS Ring Term-Starter UPC FN =&LM/L59&8Y9 1. RED 32.0 SGX 192 TPOS P Case Gnd Page Prim attery 2 batt2 001 UPC FN DUL_TT1 (PGE 1) - N P N =&LM/L59&8Y9. LK 32.0 SGX 192 TNEG T_ZONE Gnd Zone # Page STRTING & CHRGING (GS) CK EU Panel Set: 3 03 X &L18/L59/LM/LQ4/LQ9/LR4/LU3 schematic sheet1 264 k33030a $IVEDWORK/k33030a 009 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 Thursday, ugust 8, :38:59 pm ORGNIZTION CKMC03 Panel Set: 3 K33030a_009_03

233 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Starting and Charging: Diesel-Dual Gen PGE D-13 att Ign Page 8-10/ -3/2 lk sm - Ubec Starter Rly ubec_ UPC FN RLY_T Start Rly S J1-11 J2-F11 J2-D12 J2-D11 SEC_T (Page 2) =&MG5/ML6/MW3-JF GRN DK &M GRN DK INE CNTRL Ecm - Stat Sol Rly Page PPL RED TXL SGX 192 TSM M GT 1/280 RKCLTCH 12F GT 1/ STRT_RLY 1. RED 32.0 SGX 192 TSM PO CLUTCH SW PRT # PGE 8- STRT 30-1 PCM/ECM 20-1 RKE 44-1 =&MG5/ML6/MW3-JF GRN DK RKCLTCH C D C =&MG5/ML6/MW3-JF PNK RKCLTCH C Man Cltch Sw-tm Of Trvl cltch_sw_btm E F GT 1/280 RKCLTCH 12M GT 1/ IGN1-IGNE (Uh ec) Page 8-10/ -13 PO NSU SW PRT # PGE 8- STRT J2-G J2-E NSU-Start Sw eau_nsbu_sw 001 UPC FN J &M PNK IGN1-IGNE (Uh ec) Page 8-10/ -13 Ring Term-Starter UPC FN S_CSE Ring Term-Starter UPC FN S Motor Starter V Y 2 00 M _CSE &5X WRECKER PCKGE ux at Page 8-110C -1 Ring Term - Wrecker Pack UPC FN UX_T1. LK 32.0 TSM P + Prim attery 2 batt2 001 UPC FN - N SGX P N T_ZONE =&MG5/ML6/MW3-JF PNK 10 CLUTCH_MN 10 NSU_UTO Starter Case Page STRTER_GND Gnd Zone # Page STRT & CHRGE (DIESEL-DUL GEN) 03 X &L k33030b CK EU Panel Set: 1 schematic sheet1 13 $IVEDWORK/k33030b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:18:01 pm ORGNIZTION 009 PROD 1 CKMC03 Thursday, ugust 1, 2002 Panel Set: 1 K33030b_009_01

234 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Starting and Charging: Diesel-Dual Gen PGE D-138 lock sm-at Pos Cbl Junct pe SINGLE GEN DUL GEN SEC_T 1 (Page 1) 1. RED 32.0 SGX TSM Ring Term - Junct lk Ctr Strip UPC FN Ring Term-Junct lk Sinle Gen UPC FN Ring Term-Junct lk Dual Gen &K68/KG4 1. UPC FN RED FUSELINK 3 TSM 192 P + - N 1. RED 19.0 STX 113 TSM 1 Uhbec Page Prim attery 1 batt1 001 UPC FN P N Ring Term - Uhbec UPC FN T_PWR Ring Terminal - L gen UPC FN RED 8.0 TSM S001 &K65/8X5 FUSELINK &K65/K68/KG4/8X5 1. RED 19.0 STX 5 TSM 3 INE CNTRL Ecm Page 8-20D -6 L_FTERM INE CNTRLS Ecm Page 8-20D GR L_LTERM 0.8 TXL 25. RN 0.8 TWP RPO LEGEND: K68: SINGLE 105 GEN K64: SINGLE 1 GEN K65: DUL 105 GEN SEO:SME CONFIG S K65 INE CNTRLS Ecm Page 8-20D -6 &YF2/8X LT_L2TERM &K65/8X5 1. RED 8.0 FUSELINK 3 TSM Ring Term - Dual Gen UPC FN T D C C D T 6. LK 32.0 SGX TSM LK 8.0 TXL 19 TSM &9L4. LK 5.0 TXL 19 TSM F M/P 480 TNEG CSRYJPR 2M M/P STTOR G 3 ~ PHSE FIELD (ROTOR) CSE DC SENSE C SENSE FIELD LMP DRIVER TURN ON INPUT CS130 Generator sm gener_lfterm 001 6Y Generator sm - Dual gener_l2term 001 6Y FIELD LMP DRIVER TURN ON INPUT CS130 DC SENSE C SENSE PHSE STTOR G 3 ~ FIELD (ROTOR) CSE 6 T_ZONE6 Gnd Zone #6 Page T_ZONE1 Gnd Zone #1 Page SEORLY_GND &9L4 MOILE RDIO SEO Relay Fuse Center Page LT_GND Case Gnd Page STRT & CHRGE (DIESEL-DUL GEN) 03 X &L k33030b CK EU Panel Set: 2 schematic sheet1 13 $IVEDWORK/k33030b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:18:01 pm ORGNIZTION 009 PROD 1 CKMC03 Thursday, ugust 1, 2002 Panel Set: 1 K33030b_009_02

235 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Cruise Control PGE D-139 IGN3-Cruise (LH ec) Page 8-10/ -12/ CRUISE_SW RKES VSES/bs Page 8-44//C -5/2/2 INE CONTROLS Mbec - 81 Page 8-20C RK_CLTCH 81 CRUZ_4KPPM STRG Col sm - Cruise Cntrl Sw eau_cruise_sw 004 UPC FN PO STRG COL PGE 8- CRUISE HORN IGN HIRES_PWR SIR 04-1 STEERWHL TRNHZ WER EXTERIOR LIGHTS Vehicle Stop (Ubec ) Page 8-110/- 2 INE CONTROLS Pcm/Ecm Page 8-20C NEUTRL ON OFF STRG WHL - HIRES SNSR Hires Pos Snsr Page RK_FD 396 CRUISE_ Cruise (LH ec) Page 8-10/ -12/ GR/LK M GT INE 16F GT CRUISEMDL_PTO 41. RN LU DK GR 0.35 TXL 0.35 TXL LU LT 396. LU LT/LK F C H D G K J IGN SET COST RESUME CCEL ON/OFF (SENSE) CRUISE SPRE RKE RKE LMP VSS CRUISE GE/DIS Mod sm - Cruise Control cruise_cntl_mod 001 UPC FN GND E 1851 CRUISE_GND Mbec 1851 Page CRUISE CONTROL CK EU Panel Set: 1 03 X &K34 OJECT ID REVISION STGE VERSION LST CHNGED Y 8:52:54 am ORGNIZTION k33034a 00 PROD schematic sheet1 118 $IVEDWORK/k33034a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Tuesday, March 26, 2002 Panel Set: 1 K33034a_00_01

236 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Serial Data: Data Link Connector (DLC) PGE D-140 at - Cigar (Uh ec) Page 8-10/ -3/ DLC_PWR f M/P 1 Data Link Conn. data_link_conn 001 UPC FN PPL 0.35 TWP 1851 DLC_GND1 Gnd Zone #18 Page CL2_DLC 10 DLC_GND2 SERIL DT LINK Class 2 Gnd Zone #10 Page Page DT LINK CONNECTOR (DLC) CK EU 03 X Panel Set: 1 schematic sheet1 4 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:39:16 pm k330a $IVEDWORK/k330a ET 1 Tuesday, October 23, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 1 K330a_005_01

237 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Serial Data: Serial Data Link (Class II) PGE D-141 CLUSTER HVC Ipc Hvac Mdl Page Page 8-65/68-1 PDM J2-22 (HSD/LSD) THEFT DETERRENT Passkey Snsr Page SETS Dsm Page SIR Sdm (PU) Page CL2_C G WHT 0.35 TWP CL2_HVC E J- RFDOOR 104 J TN 0.35 TWP PDM_CL2 &YE TN RFDOOR F lk sm-rbec PDM Cl2 rbec_ H FN DLC Dlc Page CL2_DLC &T PPL D CL2_PKEY &43/53&G2&NYS &03/43/53&G2-NYS &03/43/53-NYS &43/53&NYS RN/WHT RN/WHT LU DK LU DK ODY ODY ODY ODY DSM_4353 DSM_ (Page 1) DSM_CL2_PU &03/43/53-NYS LU DK/WHT 03/43/53-NYS H (Page 1) M GT 280 ODY 16F GT SDM_CL2_PU M GT MXD ODY 22F GT MXD =&06/36#&43/53&NY LU DK/WHT 06/36#43/53&NYS ODY_STR &06/ LU DK/WHT ODY (Page 2) R R &L18/L&M YEL K 240 LCT TRNSMISSION Tcm Mod Page M GT INE 16F GT CL2_TCM &L18/L&M4 Datalink Class 2 - splsvr_cl2_ip 002 UPC FN M C J L &YE RN GRN DK H H F GT M GT GRN LT &Y PNK _STR (Page 4) -Y PNK J INFOTINMENT-PREMIUM Radio Mdl Page 8-1//C -1 lk sm - Mbec Cl2 (INFO/) mbec_ UPC FN CL2_RDIO &NP1/NP8/NR GRN DK/WHT &NYS 256. GR J1-E LFDOOR J3-J &YE RN LFDOOR lk sm - DDM lbec_ UPC FN TC_CL2 J CL2_ 1122 CL2_RK CL2_TC CL2_QS4 INE CONTROLS Pcm/Ecm Page 8-20//C/D -8/12/8/8 CLSS 2-1 (WUR) J2-12 TC &06/36/43/U1S/U42/U2K/U2L/UE1-Y PNK INFOJMPR INFO_STR (Page 3) OJECT ID REVISION STGE VERSION LST CHNGED Y 2:56:24 pm ORGNIZTION SERIL DT LINK (CLSS II) CK EU 03 X k33055a 009 PROD 1 CKMCE Panel Set: 1 schematic sheet1 254 $IVEDWORK/k33055a 009 Monday, September 9, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 S/VSES rakes Page TRNSF CSE CNTL tc Mod Page 8-38/C -1/1 FOUR WHL STRG Qs4 Mod Page DDM_CL2 (HSD/LSD) J2-22 DDM K33055a_009_01

238 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Serial Data: Serial Data Link (Class II) PGE D-142 POWER SETS Dsm Page RIDE CONTROL Rtd Mdl Page &06/36 &G2 Z DSM_CL2_UT 1126 CL2_RTD C D Datalink Class 2 - ody splsvr_cl2_body 001 UPC FN F E &06/ LU DK ODY 2289 CL2_RRECC SDM_CL2_UT ODY_STR 2218 (Page 1) UX RR HVC Rr Ecc Mdl Page SIR Sdm (UT) Page 8-4/ -1 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:56:24 pm ORGNIZTION SERIL DT LINK (CLSS II) CK EU 03 X k33055a 009 PROD 1 CKMCE Panel Set: 2 schematic sheet1 254 $IVEDWORK/k33055a 009 Monday, September 9, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33055a_009_02

239 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Serial Data: Serial Data Link (Class II) PGE D-143 INFOTINMENT-PREMIUM RS Mdl Page INFOTINMENT - RSE Rse Mdl Page D/SDRS Dab/Sdars Module Page Y91 &U2L /U2K CL2_INFORS CL2_INFORSE 221 CL2_INFOD &06/36/43&UQ-Y LU LT INFOJMPR &U42-Y GRN LT/LK 0.5 TWP INFOJMPR G E F D H K Datalink Class 2 - Info/Ip splsvr_cl2_info 003 UPC FN M C J L 112 CL2_INFONST INFO_STR 1045 (Page 1) -Y91 ONSTR Onstar Mdl Page 8-85/C -1 SERIL DT LINK (CLSS II) CK EU Panel Set: 3 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 2:56:24 pm k33055a 009 PROD 1 schematic sheet1 254 $IVEDWORK/k33055a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Monday, September 9, 2002 ORGNIZTION CKMCE Panel Set: 3 K33055a_009_03

240 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Serial Data: Serial Data Link (Class II) PGE D-144 INFOTINMENT-PREMIUM RS Mdl Page 8-1/C -3 INFOTINMENT-PREMIUM ose mp Page 8-1C -5 REMOTE CD PLYER Remote CDX Page INFOTINMENT Rse Mdl Page D/SDRS Dab/Sdars Module Page &Y91 &U2L /U2K CL2_RS CL2_MP CL2_CDX CL2_RSE 221 CL2_D &Y LU LT &Y LU DK &U1S&Y91 2. TN 0.8 TWP &U42&Y GRN LT/LK G E F D H K Datalink Class 2-12Way- splsvr_ip_cl2 003 UPC FN M C J L 112 CL2_ONST _STR 1045 (Page 1) &Y91 ONSTR Onstar Mdl Page 8-85/D -1 SERIL DT LINK (CLSS II) CK EU 03 X Panel Set: 4 schematic sheet1 254 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:56:24 pm k33055a $IVEDWORK/k33055a PROD 1 Monday, September 9, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 4 K33055a_009_04

241 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Instrument Panel Cluster PGE D-145 STEERING WHEEL CONTROLS Fueling Page STEERING WHEEL CONTROLS Trip Page EXTERIOR LIGTHING Lt Turn (Lh ec) Page IgnE (Uh ec) Page 8-10/ -15/13 Ipc/Dic Fuse (Uh ec) Page 8-10/ -3/ DIC_FINFO DIC_TR C_LTRN 639 C_IGNE C_PWR STEERING WHEEL CONTROLS RE/SET Sw Page STEERING WHEEL CONTROLS Dic Select Page EXTERIOR LIGHTING Rt Turn (Lh ec) Page SEO Ign Fuse Page SEO 1 Fuse Page DIC_PERS DIC_SELECT C_RTRN C_SEOIGN C_SEO1 &YE YEL &YE GRN DK/WHT &YE LU DK &YE ORN LU LT LU DK &8S8 39. PNK -8S ORN &8S ORN 0.5 TWP UNUSED FUEL INFO RE/SET TR DIC SELECT UNUSED UNUSED L TURN/ HZRD R TURN/ HZRD IGN1 UNUSED TT C/DIC Cluster- sm cluster_ipc 003 UPC FN ELECTRONICS RESET CRGO LP ON SPRE 1 SPRE 2 OVERSPEED LOW IR LOW COOLNT REDUCED PWR CHNGE OIL CHECK GUGES LOW OIL LEVEL S IR G TTERY SET ELT DRL/PRK RK RKE SERVICE SOON HIGH EM LEFT TURN RIGHT TURN IGN INSTRUMENT PNEL CLUSTER CK EU 03 X Panel Set: 2 schematic sheet1 229 $IVEDWORK/k33081a 008 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:58:06 pm k33081a 008 PROD 1 Tuesday, pril 2, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 K33081a_008_01

242 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Instrument Panel Cluster PGE D-146 PRK_RKSW PRKR (DI) 251/-3 J4- TC -JF4 &JF4 -JF LU LT &JF LU LT J J M GT 1/280 RKCLTCH 12F GT 1/ M GT MXD RKCLTCH 18F GT MXD JF LU LT 0.5 TWP RKCLTCH &JF LU LT 0.5 TWP RKCLTCH Sw sm - Park rk Ind park_brksw 001 UPC FN PRK_GND Case Gnd Page INSTRUMENT PNEL CLUSTER CK EU Panel Set: 3 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 2:58:06 pm ORGNIZTION k33081a 008 PROD schematic sheet1 229 $IVEDWORK/k33081a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Tuesday, pril 2, 2002 Panel Set: 3 K33081a_008_02

243 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Headlamps: Non Z5 PGE D-14 Main att us Page 8-10/ -3/1 Main att us Page 8-10/ -3/2 lk sm - Ubec Headlamps ubec_ H 466 HDLP_LOW HDLP_HIGH S1 S HDLP Relay - Low HDLP Relay - High TC J S S1346 TC J2-1 TC_LOWM LO HDLP-RT LO HDLP-LT HI HDLP-LT HI HDLP-RT TC_HIM 190. PNK/WHT 0.5 TWP FWDLP FWDLP FWDLP J1-D3 J4-F5 J4-F4 J4-E2 J4-E FWDLP J LK/WHT 0.5 TWP DOM EXP DOM EXP 312. TN/WHT FWDLP 12. YEL 0.5 TXL FWDLP -TR6 11. GRN DK/WHT FWDLP &TR6 11. GRN DK/WHT FWDLP -TR GRN LT/LK FWDLP &TR GRN LT/LK FWDLP Rh Low eam lo_beam 001 UPC FN Lh Low eam lo_beam 001 UPC FN Lh Hi eam high_beam 001 UPC FN Lh Hi eam beam_hi 001 UPC FN Rh Hi eam high_beam 001 UPC FN Rh Hi eam beam_hi 001 UPC FN RHLOW_GND1 5 LHLOW_GND1 5 LHHI_GND1 5 LHHI_GND3 1 RHHI_GND1 1 RHHI_GND3 HEDLMPS (NON Z5) CK EU Panel Set: 1 of 2 03 X -Z5 schematic sheet1 OJECT ID k33100a 18 $IVEDWORK/k33100a 00 Gnd Zone #1 Page REVISION 00 STGE PROD VERSION 1 Gnd Zone #5 Page LST CHNGED Y Tuesday, January 21, :15:23 pm Gnd Zone #5 Page ORGNIZTION CKMCE Panel Set: 1 Gnd Zone #5 Page Gnd Zone #1 Page Gnd Zone #1 Page & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33100a_00_01

244 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Headlamps: Non Z5 PGE D J2-8 TC TC_HDLPON J2-5 DRL OFF(WUF) TC_DRLOFF 1851 HDLP_GND PNK -T PPL Gnd Zone #18 (Mbec) Page lk sm-hdlp Sw hdlp_sw 005 UPC FN HEDLMP DRL OFF (SHOWN IN OFF) HL/DRL PRK- LMP HL/DRL DEFET 1851 CTSYSW_GND INTERIOR LIGHTING Headlamp Sw Page 8-114/ -4/3 PO HDLP SW PRT# PGE 8- HDLP INTLTS 114/-4/3 DIM STRG COL-Multi-Function Sw mult_ftp_bus C 5D HIEM_GND EXTERIOR LIGHTING Multi Function Sw Page 8-110/ -8/ PO STRG COL PRT# PGE 8- TSI CRUISE FTP HORN IGN PSSLOCK SIR 04-1 STEERWHL TRNHZ WER HDLP_DIM DIMMING CNTL 1382 Mbec Page 8-11/ WHT 0.35 TWP 308. GR/LK 588. GRN DK EM SELECT 1 FTP GRN LT 30. YEL TC_HDLP TC_PRKLP DRL_DFT TC_HIMSEL TC_FTP HEDLMP SWITCH J4-12 PRK LMP SWITCH J3-2 HLDIS (DI) DEFET J3-8 TC EM SELECT J3-9 FTP J4-2 HEDLMPS (NON Z5) CK EU Panel Set: 2 of 2 03 X schematic -Z5 sheet1 OJECT ID k33100a 18 $IVEDWORK/k33100a 00 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 00 STGE PROD 1:15:23 pm ORGNIZTION 1 CKMCE Tuesday, January 21, 2003 Panel Set: 2 K33100a_00_02

245 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Headlamps: Z5 PGE D-149 Main att us Page 8-10/ -3/1 Main att us Page 8-10/ -3/1 lk sm - Ubec Headlamps ubec_ H 466 HDLP_LOW HDLP_HIGH S1 S HDLP Relay - Low HDLP Relay - High TC J S S1346 TC J2-1 TC_LOWM 190. PNK/WHT 0.5 TWP 691 LO HDLP-RT FWDLP FWDLP FWDLP J1-D3 RH HID/EXP LP (Ubec) Page J4-F5 LH HID/EXP LP (Ubec) Page LO HDLP-LT J4-F HI HDLP-LT J4-E HI HDLP-RT FWDLP J4-E3 J1-9 TC_HIM LK/WHT TWP 20 &TT6 20 &TT RHID_PWR 3540 LHID_PWR =&TT TN/WHT =&TT6 12. YEL TWP TWP FWDLP FWDLP 11. GRN DK/WHT FWDLP 311. GRN LT/LK FWDLP F H PO HDLP SW SM PRT# PGE 8- Z5-LH/RH DRL-LH/RH PRK/TRN/MKR-LH/RH110-4 Hdlp sm - Rh z5_hdlp 001 UPC FN HID sm-rt hid_asm 002 UPC FN HID sm-lt hid_asm 002 UPC FN PO HDLP SW SM PRT# PGE 8- Z5-LH/RH DRL-LH/RH PRK/TRN/MKR-LH/RH110-4 F H Hdlp sm - Lh z5_hdlp 001 UPC FN HIGH G LOW J HIGH LOW G J 1 RHID_GND 5 LHID_GND 5 LHHI_GND2 1 RHHI_GND2 &TT6 &TT6 &Z5 &Z5 HEDLMPS (&Z5) CK EU Panel Set: 1 of 2 03 X schematic &Z5 sheet1 58 OJECT ID k33100b Gnd Zone #1 Page $IVEDWORK/k33100b 005 REVISION 005 STGE PROD Gnd Zone #5 Page LST CHNGED Y 1:4:25 pm ORGNIZTION 1 CKMCE Tuesday, January 21, 2003 Panel Set: 1 VERSION Gnd Zone #5 Page Gnd Zone #1 Page & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33100b_005_01

246 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Headlamps: Z5 PGE D J2-8 TC TC_HDLPON J2-5 DRL OFF(WUF) TC_DRLOFF 1851 HDLP_GND PNK -T PPL Gnd Zone #18 (Mbec) Page lk sm-hdlp Sw hdlp_sw 005 UPC FN HEDLMP DRL OFF (SHOWN IN OFF) HL/DRL PRK- LMP HL/DRL DEFET 1851 CTSYSW_GND INTERIOR LIGHTING Headlamp Sw Page 8-114/ -4/3 PO HDLP SW PRT# PGE 8- HDLP INTLTS 114/-4/3 DIM STRG COL-Multi-Function Sw mult_ftp_bus C 5D HIEM_GND EXTERIOR LIGHTING Multi Function Sw Page 8-110/ -8/ PO STRG COL PRT# PGE 8- TSI CRUISE FTP HORN IGN PSSLOCK SIR 04-1 STEERWHL TRNHZ WER HDLP_DIM DIMMING CNTL 1382 Mbec Page 8-11/ WHT 0.35 TWP 308. GR/LK 588. GRN DK EM SELECT 1 FTP GRN LT 30. YEL 0.35 TWP TC_HDLP TC_PRKLP DRL_DFT TC_HIMSEL TC_FTP HEDLMP SWITCH J4-12 PRK LMP SWITCH J3-2 HLDIS (DI) DEFET J3-8 TC EM SELECT J FTP J4-2 HEDLMPS (&Z5) CK EU Panel Set: 2 of 2 03 X &Z5 schematic sheet1 58 OJECT ID k33100b $IVEDWORK/k33100b 005 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 Tuesday, January 21, :4:25 pm ORGNIZTION CKMCE Panel Set: 2 K33100b_005_02

247 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL mbient Light / Solar Sensor PGE D-151 mbient Light / Solar Sensor light_solar_sen 002 UPC FN MIENT LIGHT SENSOR RTN L SOLR SENSOR R SOLR SENSOR D C &CJ2 28. WHT &CJ2 &CJ LK LU LT/LK TWP 0.35 &CJ GR 0.35 TWP LTSOLSENS RTSOLSENS LEFT SOLR SENSOR J3-5 TC RIGHT SOLR SENSOR J3-5 Light Sensor light_snsr 002 UPC FN MIENT LIGHT -CJ2 28. WHT 0.35 TWP SENSOR RTN -CJ2 29. LK W/CJ2 W/O CJ2 W/O CJ2 W/CJ2 TC_MLT MIENT LIGHT SENSOR 251/-3 J3-4 TC TC_SNSRTN SENSOR RETURN 251/-3 J4- MIENT LIGHT / SOLR SENSOR 03 X k33101a CK EU Panel Set: 1 schematic sheet1 26 $IVEDWORK/k33101a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 5:38:2 pm ORGNIZTION 002 PROD 1 CKMC03 Thursday, January 3, 2002 Panel Set: 1 K33001a_00_01

248 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Daytime Running Lights (Domestic / Middle East) PGE D-152 DRL DRL (Uh ec) Page 8-10/ -5/ lk sm - Ubec DRL Feed ubec_ H 466 SE & SNOWPLOW ESCLDE 4840 U1_U1 W/O VYU SNOWPLOW S4840 TC 251/-3 J2-4 TC_DRLRLY 592. GRN LT/LK DRL Relay FWDLP =&36&VYU#-Z5-VYU-T LU DK 0.5 TWP FWDLP &VYU LU DK 0.5 TWP FWDLP M M/P 1 G FWDLP SNOPLW G F M/P &VYU LU DK 0.5 TWP FWDLP &Z LU DK 0.5 TWP FWDLP J1-E3 J4-2 K ESCLDE SE & SNOWPLOW W/O VYU SNOWPLOW DRL POS DRL ulp - RH drl_wedge 002 UPC FN Hdlp sm - Drl - Rh drl_lamp 001 UPC FN PO HDLP SM SW PRT# PGE 8- Z5-LH Z5-RH DRL-LH DRL-RH PRK/TRN/MKR-LH PRK/TRN/MKR-RH &VYU LU DK 0.5 TWP FWDLP M M/P 1 G FWDLP SNOPLW G F M/P =&36&VYU#-Z5-VYU-T65 &VYU &Z LU DK LU DK LU DK 0.5 TWP 0.5 TWP 0.5 FWDLP FWDLP TWP FWDLP K =&36&VYU#-Z5-VYU-T65 1. LK W/O VYU SNOWPLOW 0.5 TWP FWDLP Hdlp sm - Drl - Lh DRL ulp - LH drl_lamp 001 drl_wedge 002 UPC FN UPC FN 1. &VYU LK 0.5 TWP FWDLP C G F M/P 1 H SNOPLW 1. FWDLP H M M/P 1 &Z5 LK TWP FWDLP =&36&VYU#-Z5-VYU-T65 &VYU-36 LK LK 0.5 TWP 0.5 TWP FWDLP FWDLP DRL POS W/O VYU G SNOWPLOW &VYU LK 0.5 TWP FWDLP H H F M/P 1 SNOPLW FWDLP M M/P &VYU LK 0.5 TWP FWDLP C &Z5 1. LK 0.5 TWP FWDLP PO HDLP SM SW PRT# PGE 8- Z5-LH Z5-RH DRL-LH DRL-RH PRK/TRN/MKR-LH PRK/TRN/MKR-RH LHDRL_GND RHDRL_GND Gnd Zone#1 (1 Splice) Page Gnd Zone#1 (1 Splice) Page DRL (DOMESTIC/ MIDDLE EST) CK EU 03 X Panel Set: 1 schematic sheet1 30 OJECT ID REVISION STGE VERSION LST CHNGED Y 11:19:44 am k33102a $IVEDWORK/k33102a PROD 1 Tuesday, September 24, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 1 K33102a_008_01

249 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Front Fog Lamp PGE D-153 Fog Lp (Uh) Page 8-10/ -5/3 att (Uh ec) Page 8-10/ -5/3 lk sm - Ubec Front Fog Lamp ubec_ H FGLP_FUSE 1 FOG_T FRT FOG LP RLY FWDLP J4-D6 J GRN DK/WHT 131 FFOG_RLY =&03/43&T96-T89#&53&T96-T89-Y PPL 0.8 TWP FWDLP =&03/43&T96-T89#&53&T96-T89-Y91 =&06/36&T96-T89#&53&T96&Y91-T89 =&06/36&T96-T89#&53&T96&Y91-T PPL PPL PPL 0.8 TWP 0.8 TWP 0.8 TWP FWDLP FWDLP FWDLP CRGO/RER WER Cargo/ Frt Fog Lp Sw Page LF Fog Lamp - PU high_beam 001 UPC FN RF Fog Lamp - PU high_beam 001 UPC FN LF Fog Lamp - UT fog_lamp 001 UPC FN RF Fog Lamp - UT fog_lamp 001 UPC FN TC 251/-3 J2-5 FFOG/HZD LSD 1 LHFOG_GND2 1 RHFOG_GND2 1 LHFOG_GND1 1 RHFOG_GND1 Panel Set: Gnd Zone #1 Page FRONT FOG LMP CK EU 1 03 X -T89 schematic sheet1 OJECT ID k33103a 144 Gnd Zone #1 Page $IVEDWORK/k33103a 008 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 Gnd Zone #1 Page Wednesday, July 31, :58:40 am Gnd Zone #1 Page ORGNIZTION CKMC03 TC_FFOGLP K33103a_008_01

250 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-154 att (Uh ec) Page 8-10/ -5/3 S Parklamp Rly lk sm - Ubec Parklamps ubec_ UPC FN PRKLP_T S TRLR PRK LR PRK RR PRK F PRK INT PK/ RFMKR S CHSSIS CHSSIS CHSSIS FWDLP FWDLP J1-F11 J3-6 J3-F6 J3-C6 J4-C5 LF_SDMKR J4-C1 RF_PKFD J1-12 MRK_LP 2309 (Page 4) 2309 (Page 5) W/PTO W/O PTO 2409 (Page 8) &PTO RN S PTO_DIM &PTO RN -PTO RN TC 251/-2 J2-2 PRK(LSD) WHT PRKLP_RLY 2109 TRLR_PRK TRILER WIRING Inline Page 8-119/ RN 0.8 GXL CHSSIS RN/WHT 0.8 GXL CHSSIS W/ SNOWPLOW &VYU RN 0.8 TWP FWDLP &VYU RN 0.8 TWP FWDLP M M/P 1 FWDLP SNOPLW F M/P OTHER W/O SNOWPLOW CDILLC -Z5-VYU-T90-TR &Z5 RN RN 0.8 TWP 0.8 TWP FWDLP FWDLP W/ SNOWPLOW W/O SNOWPLOW &VYU RN 0.8 TWP FWDLP &VYU RN 0.8 TWP FWDLP M M/P 1 FWDLP SNOPLW F M/P OTHER PTO PTO Sw Page CDILLC -Z5-VYU-T90-TR &Z5 RN TWP RN FWDLP 0.8 TWP FWDLP TRLR_STOP2 TRILER WIRING lk Trailer Mbec Page 8-119/ -2/ &C RN PSIR_DIM J1-C10 J1-D10 lk sm - Mbec Park Lamps mbec_ UPC FN _TIL 2409 (Page 10) TIL_LRLP (Page 6) TIL_RRLP (Page 6) LF_PKFD LF_Z5 RF_SDMKR RF_Z5 (Page 4) (Page 4) (Page 5) (Page 5) SIR (SDM)-PICKUP PSIR Defeat Sw Page 8-4b -3 EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) 03 X k33110a CK EU Panel Set: 1 schematic sheet1 14 $IVEDWORK/k33110a 010 REVISION STGE VERSION LST CHNGED Y 4:02:56 pm 010 PROD 1 Wednesday, ugust, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 1 K33110a_010_01

251 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-155 Zab Sw sm-stop Lp (W/JF4) stop_lamp_sw1 003 FN UPC Stop Lp Sw (Uh ec) Page 8-10/ -3/2 25 STOP_LPSW 6 6 &JF4 &JF4 1. WHT 1.0 TWP &JF4 1. WHT 1.0 TWP RKCLTCH &JF ORN 1.0 TWP RKCLTCH &JF ORN 1.0 TWP M GT MXD RKCLTCH 18F GT MXD Zab Sw sm-stop Lp (W/O JF4) F stop_lamp_sw2 002 FN UPC E F GT MXD RKCLTCH 18M GT MXD &JF4 PO Z SW PRT# PGE 8- STOP LP RKE TSI S1 1 VEHICLE STOP L1620 VEHICLE CHMSL S J1-8 -JF4 -JF4 1. WHT 1.0 TWP H H -JF4 1. WHT 1.0 TWP RKCLTCH -JF4 - + PO Z SW PRT# PGE 8- STOP LP RKE TSI S1320 &L18/GEN3&NW OR &L-NW 1320 CHSSIS -JF ORN 1.0 TWP J2-10 J3-F4 RKCLTCH G 12F GT 1/280 RKCLTCH LU LT G 0.8 GXL 12M GT 1/280 CHSSIS JF ORN 1.0 TWP M GT 1/280 RKCLTCH 12F GT 1/ J1-F LU LT 0.5 TWP ETC_STOP FLSHER 1 (Page 3) 1320 CRUISE CNTL Cruise Mdl Page J1-E STOP_LP RK_FD ELEC THROT CNTL/INE CNTRLS Etc Module/ECM Page 8-21/20D -1/4 J1-C8 &03/53/43 EXPORT TRILER WIRING Trlr Chmsl Page (Page 6) 1620 TRLR_CHMSL EXTERIOR LIGHTING Lbec 1620 Page lk sm - Ubec Stop Lp ubec_ UPC FN LU LT 0.5 TWP J1-F TRLR_STOP1 TRLR WIRING Trlr Chmsl Page lk sm - Stop Lamp Fuse lbec_1 002 UPC FN HDLNR 1620 VLNCHE & LU LT 0.5 TWP ODY J3-J CHMSL NEON UTILITY & LU LT 0.5 TWP ODY M GT 280 C ODY CTRSIL C 4F GT CHMSL_GND3 & LU LT CTRSIL Gnd Zone #14 Page EXTERIOR LIGHTING lk sm - Lbec1620 Lbec 1620 lbec_ Page UPC FN 1620 ODY J4-H CHMSL/Cargo-Utility chmsl_utility 001 UPC FN CHMSL/Cargo-valanche chmsl_warrior 001 UPC FN D & LK CTRSIL &03/43/ LU LT 0.5 TWP HDLNR lk sm - Mbec Stop Lp mbec_ C D UPC FN D PO CHMSL/CRGO LP CHMSL Pickup PRT# PGE 8- CRGO_LP chmsl_pickup 002 CHMSL LP UPC FN 10 CHMSL_GND Mbec Page L F GT 280 CTRSIL ODY 4M GT CHMSL_GND2 Gnd Zone #12 Page EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) CK EU 03 X k33110a Panel Set: 2 schematic sheet1 14 $IVEDWORK/k33110a 010 REVISION STGE VERSION LST CHNGED Y 4:02:56 pm 010 PROD 1 Wednesday, ugust, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 2 K33110a_010_02

252 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-156 Flasher (Lh ec) Page 8-10/ -11/8 lk sm - Flasher Mdl lbec_ UPC FN FLSH_MDL K TT Flasher Module FLSHER GND E FLS_GND S POWER LOCKS LF Pwr Door Lk Sw Page RT TRLR ST/TRN D 19 RT TRLR LT TRLR ST/TRN C J LT TRLR FLSHER 1 (Page 2) RKE RT TURN LT TURN HZRD L-TRN 2115 L_2115 lk sm - Lbec2115 lbec_2115 Page H L_2114 RT TURN LT TURN lk sm - Lbec2114 S2115 S lbec_ Page STG COL STG COL STG COL G F R-TRN J1-D10 J1-9 J1-8 J1-11 J1-F3 J2-D J2-C J GRN DK YEL 2115 C_RTRN LU DK 0.8 TXL 0.8 TXL 0.35 TWP LU LT LU LT LU LT LU LT STGCOL STGCOL STGCOL H H F GT 1 SLD CHSSIS 10M GT 1 SLD CLUSTER Ipc - Rt Turn Page HZ_RFD (Page 8) HZ_LFD (Page 8) 1851 FLSHER_GND 1618 TRLR_LTRN 2114 C_LTRN HZ_G (Page 8) LT_SIG Mid Clean (Mbec 1851) Page TRILER WIRING Trlr Lt Page 8-119/ -1 RT_SIG CLUSTER Ipc - Lt Turn Page (Page 4) 1619 TRLR_RTRN (Page 4) TRILER WIRING Trlr Rt Page 8-119/ -1 REVISION STGE VERSION LST CHNGED Y 4:02:56 pm ORGNIZTION EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) CK EU 03 X k33110a 010 PROD 1 CKMC03 Panel Set: 3 schematic sheet1 14 $IVEDWORK/k33110a 010 Wednesday, ugust, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33110a_010_03

253 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-15 LT_SIG 2114 (Page 3) J1-F S FWDLP CHSSIS J4-E1 J3-3 lk sm - Ubec LT Turn ubec_ UPC FN LU LT 0.8 GXL CHSSIS LRTRN_FD (Page 6) CDILLC OTHER W/O SNOWPLOW W/ SNOWPLOW W/ SNOWPLOW W/O SNOWPLOW &Z LU LT 0.8 TWP FWDLP -Z5-VYU-T90-TR &VYU LU LT LU LT 0.8 TWP 0.8 TWP FWDLP FWDLP E E &VYU LU LT 0.8 TWP FWDLP C C M M/P 1 FWDLP SNOPLW F M/P Z5-VYU-T90-TR LU LT 0.8 TWP FWDLP 2309 LF_Z5 (PGE #1) &VYU LU LT 0.8 TWP FWDLP LF_PKFD 2309 (Page 1) &VYU LU LT 0.8 TWP FWDLP E D PO HDLP SM SW PRT# PGE 8- Z5-LH Z5-RH DRL-LH DRL-RH PRK/TRN/MKR-LH PRK/TRN/MKR-RH MRKER PRK TURN Prk/Turn/Mkr-LH z5_pk_trn 001 UPC FN TURN PRK LF Prk/Trn Lamp prk_trn_lamp 001 UPC FN LF Side Mrkr side_mrkr_lp UPC FN G W/O SNOWPLOW W/ SNOWPLOW 1 LHPRK_GND1 1 LHPRK_GND2 Gnd Zone #1 Page Gnd Zone #1 Page &VYU RN 0.8 TWP FWDLP F M/P 1 SNOPLW FWDLP M M/P &VYU RN 0.8 TWP FWDLP -Z5-VYU-T90-TR RN 0.8 TWP FWDLP REVISION STGE VERSION LST CHNGED Y 4:02:56 pm ORGNIZTION EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) CK EU 03 X k33110a 010 PROD 1 CKMC03 Panel Set: 4 schematic sheet1 14 $IVEDWORK/k33110a 010 Wednesday, ugust, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 LF_SDMKR (Page 1) K33110a_010_04

254 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-158 RT_SIG 2115 (Page 3) J1-E10 S U15_U15 lk sm - Ubec RT Turn ubec_2115_a 001 UPC FN lk sm - Ubec RT Turn ubec_2115_a Page lk sm - Ubec RT Turn ubec_2115_b 001 UPC FN FWDLP lk sm - Ubec RT Turn ubec_2115_b Page U15_U15 CHSSIS J4-3 J3-3 CDILLC W/O SNOWPLOW OTHER RF_PKFD (Page 1) W/ SNOWPLOW W/ SNOWPLOW W/O SNOWPLOW W/ SNOWPLOW W/O SNOWPLOW LU DK 0.8 GXL CHSSIS RRTRN_FD (Page 6) &Z LU DK 0.8 TWP FWDLP -Z5-VYU-T90-TR &VYU LU DK LU DK 0.8 TWP 0.8 TWP FWDLP FWDLP E E &VYU RN 0.8 TWP FWDLP M M/P 1 FWDLP SNOPLW F M/P Z5-VYU-T90-TR RN 0.8 TWP FWDLP &VYU LU DK 0.8 TWP FWDLP C C M M/P 1 FWDLP SNOPLW F M/P Z5-VYU-T90-TR LU DK 0.8 TWP FWDLP 2309 RF_Z5 (PGE #1) &VYU LU DK 0.8 TWP FWDLP &VYU RN 0.8 TWP FWDLP &VYU LU DK 0.8 TWP FWDLP E D PO HDLP SM SW PRT# PGE 8- Z5-LH Z5-RH DRL-LH DRL-RH PRK/TRN/MKR-LH PRK/TRN/MKR-RH MRKER PRK TURN Prk/Turn/Mkr-RH z5_pk_trn 001 UPC FN TURN PRK RF Prk/Trn Lamp prk_trn_lamp 001 UPC FN RF Side Mrkr side_mrkr_lp 001 UPC FN G RF_SDMKR 2309 (Page 1) 1 RHPRK_GND1 1 RHPRK_GND2 Gnd Zone #1 Page Gnd Zone #1 Page REVISION STGE VERSION LST CHNGED Y 4:02:56 pm ORGNIZTION EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) CK EU 03 X k33110a 010 PROD 1 CKMC03 Panel Set: 5 schematic sheet1 14 $IVEDWORK/k33110a 010 Wednesday, ugust, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33110a_010_05

255 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-159 RRTRN_FD 2115 (Page 5) J1-H TIL_RRLP STOP_LP 2609 J1-D 1320 (Page 1) (Page 2) J1- CHSSIS CHSSIS CHSSIS RRLPR LICLP RRLPR RRLPR RRLPL/ RRLPL/ CHSSIS CHSSIS J4-F J3- J4- J4- J2-D J2-E LU DK 0.5 GPT RRLPR RR_MRKR 2115 (Page 6) LU DK 0.5 GPT RRLPR 2609 S2115 G 1. LK 0.5 GPT RRLPR LIC_LP1 (PGE #9) J4-D =&06/36#&03/43/53- -R05/VF/NYS Rh-Rr Turn Lamp trn_stp_lp 002 UPC FN =&06/36-NYS#&03/43/53-NYS/R05/VF RN/WHT 0.5 GPT LICLP RH_LCLP LIC_GND1 (PGE #9) J3-D 1 ḂLK 0.5 GPT LICLP =&R05/VF/NYS &03/43/53#906&NYS J3-H Rh License Lp side_mrkr_lp 001 UPC FN (Page ) &X88/Z RN/WHT 0.5 GPT RRLPR &X88/Z LU DK 0.5 GPT RRLPR RR_MRKR (Page 6) RN/WHT 0.5 GPT RRLPR S RN/WHT 0.5 GPT RRLPR RR Side Mrkr Lp side_mrkr_lp 001 UPC FN LU LT 0.5 GPT RRLPR PRK G 1. LK 0.5 RRLPR STOP GPT J4-C Rh-Rr Stop/Park Lp stop_tail_lp 002 UPC FN &03/43/53 &06/ LU LT LU LT 0.5 GPT 0.5 GXL RRLPL CHSSIS P/U D D &06/ LU LT 0.5 GPT RRLPL UTILITY &06/36 &03/43/ LK LK 0.5 GPT 0.5 GPT RRLPL RRLPL F GT 280 RRLPL CHSSIS M GT &06/36 1. LK 0.5 GXL CHSSIS UTILITY (Page 6) 29. RN 0.5 GPT RRLPL STOP PRK G J2- RRLPL_PK P/U &06/36 &03/43/ RN RN 0.5 GXL 0.5 GPT CHSSIS RRLPL M GT 280 E CHSSIS RRLPL E F GT &06/ RN 0.5 GPT RRLPL UTILITY Lh-Rr Stop/Park Lp stop_tail_lp 002 UPC FN RRLPL_PK 29 S29 P/U &X88/Z5 29. RN 0.5 GPT RRLPL (PGE #6) LR Side Mrkr Lp side_mrkr_lp 001 UPC FN RRLPR LICLP LICLP RRLPR RRLPL/CHSSIS LR_MRKR 2114 (Page ) RRLPL/CHSSIS CHSSIS RRLPR CKUP LPS Lh ackup Lp Page LHU_LP J2- J1-E 1 RRLP_GND &UY Gnd Zone #15 Page NOTE GZ 1: &SERIES10/20 GZ 16: &SERIES36 GZ 15: &SERIES35 J4-H CKUP LPS Rh ackup Lp Page RHU_LP EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) CK EU 03 X k33110a Panel Set: 6 schematic sheet1 14 $IVEDWORK/k33110a 010 REVISION 010 STGE PROD VERSION 1 LST CHNGED Y 4:02:56 pm Wednesday, ugust, 2002 ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33110a_010_06

256 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-160 TIL_LRLP J1-G LRTRN_FD (Page 1) (Page 4) CHSSIS LICLP J3-G J1- CHSSIS RRLPL/ CHSSIS J2-H ussing lk sm - Rr Lps backup_lp_ UPC FN J J J J UT PU &06/ =&03/43/53&R05/VF/NYS LU LT RH_LCLP =&06/36#&03/43/53-R05/VF/NYS #&906&NYS 0.5 GXL LR_MRKR CHSSIS (Page 6) (Page 6) M GT 280 H CHSSIS =&06/36-NYS#&03/43/53-NYS/R05/VF RRLPL 29. =&03/43/53&NYS/R05/VF#&906&NYS H F GT 280 RN 29. =&03/43/53&NYS/R05/VF#&906&NYS GPT RN 29. &X88/Z5 GPT LICLP 0.5 RN &06/ LICLP 0.5 GPT LU LT LU LT LICLP 0.5 GPT 0.5 GPT RRLPL RRLPL SC29 &03/43/ LU LT 0.5 GPT RRLPL S2114 =&03/43/53&NYS/R05/VF#&906&NYS 29. RN 0.5 GPT LICLP LIC_LP2 29 (PGE #9) LU LT 0.5 GPT RRLPL UT G Lh-Rr Turn Lamp trn_stp_lp 002 UPC FN PU Left License Lp side_mrkr_lp 001 UPC FN LK 0.5 GPT LICLP LIC_GND2 1 (Page 9) &06/36 1. LK 0.5 GPT RRLPL F GT 280 RRLPL CHSSIS M GT &06/36 1. LK 0.5 GXL CHSSIS &03/43/53 1. LK 0.5 GPT RRLPL J3-C J3-E J2-C LICLP LICLP RRLPL/ CHSSIS ussing lk sm - Rear Lps backup_lp_1 003 UPC FN J J J J EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) 03 X k33110a CK EU Panel Set: schematic sheet1 14 $IVEDWORK/k33110a 010 REVISION STGE VERSION LST CHNGED Y 4:02:56 pm 010 PROD 1 Wednesday, ugust, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: K33110a_010_0

257 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-161 MRK_LP (Page 1) Ign E (Uh ec) Page 8-10/ -15/ HZ_GND &03/06/43/ RN 10 J RFMKR lk sm-rbec Center RfMkr rbec_ H FN HZ_FD 8 9 Mbec 1851(Zone #18) Page J6- &U RN RFMKR RN 0.35 RFMKR &U01 TWP IDC - Splice 1 eau_idc 001 UPC FN Center Roof Mkr-sm roof_mkr_lp 001 UPC FN &U RN RFMKR LH-Roof Mkr Lp roofmkr_lp 001 UPC FN &U RN RFMKR RH- Roof Mkr Lp roofmkr_lp 001 UPC FN PO STRG COL PRT# PGE 8- TSI CRUISE FTP HORN IGN KEYIN PSSLOCK SIR 04-1 STEERWHL TRNHZ WER FRT WSH/WE Wash/Wipe Sw Page WE_GND THEFT DETERRENT CONTENT Passkey Sensor Page PKEY_GND HEDLMPS Mult Func Sw Page HIEM_GND 1851 KEY_TOW_GND STRG Col sm - Turn/Haz Sw mult_func_sw 004 UPC FN 10. LK 0.35 RFMKR &U01 TWP &U LK RFMKR &U LK RFMKR R L R L J2- J2-C THEFT DETER Keyin/Towhall Sw Page J2-D J IDC - Splice 2 eau_idc 001 UPC FN HZ_RFD 142 (Page 3) HZ_LFD 1428 (Page 3) HZ_G 10 RFMKR_GND 111 (Page 3) Gnd Zone #10 (Rbec 10) Page EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) CK EU 03 X k33110a Panel Set: 8 schematic sheet1 14 $IVEDWORK/k33110a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 4:02:56 pm ORGNIZTION 010 PROD 1 CKMC03 Wednesday, ugust, 2002 Panel Set: 8 K33110a_010_08

258 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-162 (PGE #6) =&03/43/53&NYS/R05/VF#&906&NYS RN/WHT 0.5 GPT LICLP LIC_LP F M/P 1 LICLP HRH 2M M/P =&03/43/53&NYS/R05/VF#&906&NYS RN/WHT 0.5 GPT HRH S2609 PU LIC_LP2 (PGE #) &906&NYS 29. RN 0.5 GPT LICLP F GT 1 SLD CHSSIS LICLP 2M GT 1 SLD SUURN &906&NYS 29. RN 0.5 GXL CHSSIS F M/P 1 CHSSIS HLH 2M M/P &906&NYS 29. RN 0.5 GPT HLH SUURN &03/43/53&NYS/R05/VF 29. RN 0.5 GXL LICLP M M/P 1 LICLP HLH 2F M/P &03/43/53&NYS/R05/VF 29. RN 0.5 GPT HLH PU =&03/43/53&NYS/R05/VF#&906&NYS RN/WHT 0.5 GPT HRH RF Hip Mrkr Lamp (SU & PU) hip_mrkr_lp 001 UPC FN =&03/43/53&NYS/R05/VF#&906&NYS 1. LK 0.5 GPT HRH =&03/43/53&NYS/R05/VF#&906&NYS RN/WHT 0.5 GPT HRH RR Hip Mrkr Lamp (SU & PU) hip_mrkr_lp 001 UPC FN =&03/43/53&NYS/R05/VF#&906&NYS 1. LK 0.5 GPT HRH SC1 &03/43/53&NYS/R05/VF RN/WHT 0.5 GPT HRH &03/43/53&NYS/R05/VF 1. LK 0.5 GPT HRH Tailgate Lamp sm tailgate_lps 001 UPC FN SUURN PU PU SUURN S29 &906&NYS 29. &03/43/53&NYS/R05/VF RN GPT RN HLH 0.5 GPT HLH LR Hip Mrkr Lamp (SU) lhiplp_mrkr 001 UPC FN &906&NYS 1. LK 0.5 GPT HLH &03/43/53&NYS/R05/VF 1. LK 0.5 GPT HLH LR Hip Mrkr Lamp (PU) hip_mrkr_lp 001 UPC FN SUURN S &03/43/53&NYS/R05/VF &906&NYS RN RN 0.5 GPT 0.5 GPT HLH HLH LF Hip Mrkr Lamp (PU) hip_mrkr_lp 001 UPC FN &03/43/53&NYS/R05/VF 1. LK 0.5 GPT HLH PU &906&NYS 1. LK 0.5 GPT HLH LF Hip Mrkr Lamp (SU) lhiplp_mrkr 001 UPC FN =&03/43/53&NYS/R05/VF#&906&NYS 1. LK 0.5 GPT HRH M M/P 1 HRH LICLP 2F M/P =&03/43/53&NYS/R05/VF#&906&NYS 1. LK 0.5 GPT LICLP LIC_GND1 (PGE #6) LIC_GND2 (PGE #) PU SUURN &906&NYS 1. LK 0.5 GPT LICLP M GT 1 SLD LICLP CHSSIS 2F GT 1 SLD &906&NYS 1. LK 0. GPT HLH M M/P 1 HLH CHSSIS 2F M/P &906&NYS 1. LK 0.5 GXL CHSSIS &03/43/53&NYS/R05/VF 1. LK 0.5 GPT HLH F M/P 1 HLH LICLP 2M M/P &03/43/53&NYS/R05/VF 1. LK 0.5 GXL LICLP EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) CK EU 03 X k33110a Panel Set: 9 schematic sheet1 14 $IVEDWORK/k33110a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 4:02:56 pm ORGNIZTION 010 PROD 1 CKMC03 Wednesday, ugust, 2002 Panel Set: 9 K33110a_010_09

259 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Domestic / Middle East PGE D-163 CKUP LPS Lh ackup Lp Page lk sm - Lbec2115 lbec_ UPC FN L_ _TIL (Page 1) &906&NYS RN 2115 J1-6 J CKUP LPS Lh ackup Lp Page lk sm - Lbec2114 lbec_ UPC FN 0.5 TWP F GT 280 ODY 16M GT G G &906&NYS RN 0.5 TWP ODY &YE LU DK J1-F L_ LFDOOR J3-M J ID Lamp-906 idlamp_ UPC FN 2115 RFDOOR J-F lk sm-rbec PDM Lp Trn rbec_ H FN &YE LU DK RFDOOR &YE LU LT LFDOOR PDM_LPTRN DDM_LPTRN _TIL_G &906&NYS Gnd Zone #14 (Splsvr-ody) Page (HSD/LSD) J2-26 PDM (HSD/LSD) J2-11 DDM EXTERIOR LIGHTING (DOMESTIC/ MIDDLE EST) 03 X k33110a CK EU Panel Set: 10 schematic sheet1 14 $IVEDWORK/k33110a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 4:02:56 pm ORGNIZTION 010 PROD 1 CKMC03 Wednesday, ugust, 2002 Panel Set: 10 K33110a_010_10

260 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Wrecker Package (SEO) PGE D-164 STRTING & CHRGING Motor Starter Page 8-30/ -1 2 UX_T1 GS DIESEL &L18/L59/LM/LQ4/LQ9/LR4/LU3 2. RED 13.0 STT 5 TPOS S002 &L/LLY 2. RED 13.0 STT 5 TSM S002 &L18/L59/LM/LQ4/LQ9/LR4/LU3 2. RED 5.0 FUSELINK 19 TPOS &L/LLY 2. RED 5.0 FUSELINK 19 TSM Wrecker Relay Ring Term UPC FN P L 10. LK 0.5 GXL CHSSIS Relay Wrecker Pkg 111. wrecker_rly 001 WHT 0.5 GXL UPC FN CHSSIS F M/P 1 CHSSIS RKCLTCH 2M M/P F M/P 1 CHSSIS RKCLTCH 2M M/P SEO_5X WRECKER LIGHT SW Light ar Sw Page 8-110F SEO_WCKGND 10 Splice (Mec) Page WRECKER PCKGE (SEO) OJECT ID REVISION STGE VERSION LST CHNGED Y 11:23:44 am CK EU 03 X &5X k33110c 008 PROD 1 Panel Set: 1 schematic sheet1 96 $IVEDWORK/k33110c & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Monday, September 9, 2002 ORGNIZTION CKMCE Panel Set: 1 K33110c_008_01

261 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Roof Mounted eacon PGE D-165 Seo 2 (Mbec) Page 8-10/ -8/6 30 SEO_2 ECON_GND1 Gnd Zone #11 Page &06/ LK 3.0 TWP 19 ECON 2351 ECON_GND2 Gnd Zone #23 Page &03/53&5G4/TRW ORN 3.0 TWP RKCLTCH ORN 3.0 TWP ECON WHT 0.5 ECON F M/P 280 RKCLTCH ECON 2M M/P TWP C1 2 C2 Roof eacon Rly beacon_rly 001 UPC FN SEO_5G4 2. RN 3.0 TWP 19 ECON WRECKER LIGHT SW Light ar Sw Page 8-110F -1 bluntcut 003 bluntcut 003 (UT & CREW C) bluntcut 003 (PICKUP) UT & CREW C PICKUP &03/ LK 0.5 TWP ECON 26 SEORLY_GND1 SEORLY_GND2 &06/43&5G4/TRW Gnd Zone #11 Page Gnd Zone #23 Page ROOF MOUNTED ECON CK EU Panel Set: 1 03 X &5G4/TRW schematic sheet1 OJECT ID k33110d 10 $IVEDWORK/k33110d 008 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 Thursday, ugust 1, :5:31 am ORGNIZTION CKMC03 K33110d_008_01

262 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Emergency Light PGE D-166 Stud #2 (Uhbec) Page 8-10/ -10/ bluntcut &5Y0 EMER_RLY F M/P 280 RKCLTCH ECON 2M M/P WHT ECON 16 EMRLT_GND Gnd Zone #16 Page &5Y0&SERIES10/20 TO RING TERM# &5Y0&SERIES35 TO RING TERM# &5Y0&SERIES36 TO RING TERM# Emer Lt Rly emer_lt_rly 001 UPC FN SEO_5Y0 2. RN 3.0 TXL ECON LK 0.5 TXL ECON WRECKER LIGHT SW Light ar Sw Page 8-110F F M/P 280 2M M/P 280 ECON CHSSIS 1M M/P ECON RKCLTCH 2F M/P RN 3.0 GXL 19 CHSSIS bluntcut SEO_EMGND &5Y0 10 Splice (Mec) Page EMERGENCY LIGHT CK EU Panel Set: 1 03 X &5Y0 schematic sheet1 86 OJECT ID k33110e $IVEDWORK/k33110e 00 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 00 STGE PROD 1 1:23: pm Thursday, January 1, 2002 ORGNIZTION CKMC03 K33110e_00_01

263 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Exterior Lighting: Wrecker Light ar SW (SEO) PGE D-16 WRECKER LIGHT SW Roof Mounted eacon Page 8-110D -1 WRECKER LIGHT SW Wrecker Package Page 8-110C -1 WRECKER LIGHT SW Emergency Light Page 8-110E -1 DIMMING CNTRLS DIMMING CNTRLS Seo 1 (Mbec) Step Dim acklighting-pwm Page 8-10/ -18/15 Page Page 8-11/ SEO_5G4 SEO_5X SEO_5Y SEO_1 SEO_DIM SEO_KLT TRW 5G PPL/WHT RKCLTCH 230. RN/WHT RKCLTCH =&5G WHT 0.5 TWP RKCLTCH =&5Y WHT 0.5 TWP RKCLTCH F F D D E E F M/P 1 RKCLTCH SWJMPR 6M M/P =&TRW 111. WHT 0.5 TWP RKCLTCH =&5X 111. WHT 0.5 TWP RKCLTCH ORN 0.5 TWP RKCLJPR F PPL/WHT RKCLJPR D 230. RN/WHT RKCLJPR E S111 PWR STEP DIM ILLUM Wrecker Light Sw light_bar_sw 003 UPC FN =&5G4/5X/5Y WHT 0.5 TWP RKCLTCH ENLE C GND TRW 5G4/5X/5Y WHT 0.5 TWP RKCLJPR 10. LK 0.5 TWP RKCLJPR C C M M/P 1 SWJMPR RKCLTCH 6F M/P SEO_GND Gnd Zn #10 (10 Splice - Mbec 10) Page OJECT ID REVISION STGE VERSION LST CHNGED Y 1:36:36 pm ORGNIZTION WRECKER LIGHT R SW(SEO) CK EU 03 X &5G4/5X/5Y0/TRW k33110f 002 PROD 1 CKMC03 Panel Set: 1 schematic sheet1 20 $IVEDWORK/k33110f 002 Thursday, January 1, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33110f_002_01

264 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL ackup Lamps PGE D-168 ack Up Lamp (Uh ec) Page 8-10/ -15/14 20 ULP_PWR MNUL UTO &MG5/ML6/MW PNK 0.8 TXL &M30/M32/M4/MN8/MT PNK 0.8 TXL J2-C PO CKUP SW PRT # PGE 8- Trans sm - ackup Sw bulp_manual_sw 001 UPC FN PO NSU SW PRT # PGE 8- PRNDL CRNK KUP LP TSI TSI tsi Page 8-138a -1 NSU-ackup Sw nsbu_backup 002 UPC FN TSI_PWR J J2-F &MG5/ML6/MW GR 0.8 TXL &M30/M32/M4/MN8/MT GR 0.8 TXL J lk sm - Ubec Trlr kup Lps ubec_ UPC FN &L GR 0.8 TXL 1524 J1-F10 S TRLR KUP CHSSIS J3-C &8S GRN LT 0.8 GXL CHSSIS ack Up larm bkup_alarm GR UPC FN REV_SW 0.8 TWP TC_USW INE CNTL Ecm Page 8-20D -2 CKUP (DI) J4-8 TC 1624 TRLR_U TRLR WIRING Inline Trailer Page U_LRM Gnd Zone #16 Page &8S3&SERIES10/20 TO RING TERM# &8S3&SERIES35 TO RING TERM# &8S3&SERIES36 TO RING TERM# CKUP LMPS CK EU Panel Set: 1 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 9:03:20 am ORGNIZTION k33112a 008 PROD schematic sheet1 136 $IVEDWORK/k33112a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Thursday, May 16, 2002 Panel Set: 1 K33112a_008_01

265 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL ackup Lamps PGE D GRN LT 0.8 TXL F GT 1 SLD CHSSIS 10M GT 1 SLD GRN LT 0.8 GXL CHSSIS J1-C 06/36 03/43/53 CHSSIS ussing lk sm - Rr Lps bulp_bus_blk 002 UPC FN J J RRLPL/CHSSIS RRLPR J J2-F J4-E TC J5-F ULMP (HSD) &06/ GRN LT 0.5 GXL CHSSIS M GT 280 F CHSSIS RRLPL F F GT &06/ GRN LT 0.5 GPT RRLPL &03/43/ GRN LT 0.5 GPT RRLPL Lamp sm - Tail LH kup tail_bulp 002 UPC FN GRN LT 0.5 GPT RRLPR Lamp sm - Tail RH kup tail_bulp 002 UPC FN Z5 -Z5 24. GRN LT 0.5 TWP TC_ULP &Z5 &Z5 24. GRN LT 0.5 TWP S24 &Z5 24. GRN LT 0.5 TWP &Z5 24. GRN LT 0.5 TWP RP_ULP 06/36 G 03/43/53 G &06/36 1. LK 0.5 GPT RRLPL F GT 280 C RRLPL CHSSIS C M GT &06/36 1. LK 0.5 GXL CHSSIS &03/43/53 1. LK 0.5 GPT RRLPL 1. LK 0.5 GPT RRLPR J VNITY J3- lk sm - Mbec ackup Lps mbec_ UPC FN RER PRKING ID ackup Rly Input Page LHU_LP RHU_LP 24 ISRVM_ULP EXTERIOR LIGHTING ussing lk 1 Page EXTERIOR LIGHTING ussing lk 1 Page YE9 PWR ISRV MIRRORS ackup Feed Page CKUP LMPS CK EU Panel Set: 2 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 9:03:20 am ORGNIZTION k33112a 008 PROD schematic sheet1 136 $IVEDWORK/k33112a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Thursday, May 16, 2002 Panel Set: 2 K33112a_008_02

266 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Interior Lighting (Pickup) PGE D-10 TC Mbec DIMMING CONTROL Mbec /-1 J1-D Page 8-10/ -18/15 Page 8-11/ -1 INDV 10 LVNTY_GND 10 RVNTY_GND (HSD) &53&Y91 &53&Y ORN 0.5 TWP TC_INDV Gnd Zone #10(S10) Page Lh-Sunshade Illum Mirror sunshade_illum 001 UPC FN Gnd Zone #10(S10) Page Rh-Sunshade Illum Mirror sunshade_illum 001 UPC FN UGDO_P 230 UGDO_KLT J1-C J1-D4 132 S HDLNR lk sm - Inadvertant Pwr mbec_ UPC FN =&53&Y ORN HDLNR =&53&Y ORN HDLNR MP_UGDO3 690 (Page 2) J1-C4 J3-M =&53&Y ORN 0.8 HDLNR TWP &YE9-Y ORN HDLNR MP_RDNG 690 (Page 2) S132 =&53&Y ORN HDLNR =&53&Y ORN 0.5 TWP HDLNR C Console Map Reading Lps map_reading 001 UPC FN C E D ILLUM Console Map Lps & Ugdo map_reading_ugdo 003 UPC FN Y ORN HDLNR =&53&Y ORN HDLNR ELECTRONICS SE(03/53) UPLEVEL(53) CGO_LP 03/ GOXLP_FD 10 MPLP_GND2 CRGO LMP Cargo Lp Page MPLP_GND1 &03/53 &YE9 INTERIOR LIGHTING (PICKUP) CK EU Panel Set: 1 of 3 COMPRTMENT LP Glove ox Lp Page X &03/53 schematic sheet1 Gnd Zone #10 Page OJECT ID k33114b $IVEDWORK/k33114b 010 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 Tuesday, January 21, :5:14 pm Gnd Zone #10 (HDLNR Splice) Page ORGNIZTION CKMCE Panel Set: 1 K33114b_010_01

267 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Interior Lighting (Pickup) PGE D-11 TC 251/-1 J5-E CTSY (HSD) TC_CTSYLP 690. GR/LK J1-12 S HDLNR ODY ODY lk sm - Mbec Courtesy Lps mbec_ UPC FN J1-10 J3-L J10-C J10- =&53&Y GR/LK HDLNR &YE9-Y GR/LK MP_UGDO3 HDLNR (Page 1) 690. GR/LK HDLNR MP_RDNG (Page 1) Lamp-Dome -Pillar lamp_dome 001 UPC FN DOME_GND1 Gnd Zone #10 (HDLNR Splice) Page INTERIOR LIGHTING (PICKUP) CK EU Panel Set: 2 of 3 03 X &03/53 schematic sheet1 199 OJECT ID k33114b $IVEDWORK/k33114b 010 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 Tuesday, January 21, :5:14 pm ORGNIZTION CKMCE Panel Set: 2 K33114b_010_02

268 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Interior Lighting (Pickup) PGE D-12 DIMMING CONTROL Headlamp Sw Page 8-11/ /-2 J3-11 TC 251/-3 J HDLPSW_KLT 328. PPL TC_INTLMPD LU DK/WHT TC_CTSYSW J2-13 CTILLUM DDM CTRET J CTILLUM J2-8 PDM J2-19 CTRET PO HDLP SW PRT# PGE 8- HDLP INT LTS DIM INTERIOR LMP DEFET 10 COURTESY LMPS ON HEDLMPS Headlamps Sw Page 8-100/ -2 lk sm-hdlp Sw ctsy_hdlp_sw 004 UPC FN &YE LU DK/WHT LFDOOR DDM_LHCTSY LHCTSY_RTN PDM_RHCTSY RHCTSY_RTN &YE LU DK LFDOOR &YE WHT RFDOOR &YE LU LT RFDOOR ILLUM 1851 CTSYSW_GND GND Lamp Door Courtesy - LH door_ctsy_lp 001 UPC FN Lamp Door Courtesy - RH door_ctsy_lp 001 UPC FN 10 HDLP_GND Gnd Zone #10 Page INTERIOR LIGHTING (PICKUP) CK EU Panel Set: 3 of 3 03 X schematic &03/53 sheet1 199 OJECT ID k33114b $IVEDWORK/k33114b 010 REVISION VERSION 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD LST CHNGED Y 1:5:14 pm ORGNIZTION 1 CKMCE Tuesday, January 21, 2003 Panel Set: 3 K33114b_010_03

269 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Cargo Lamp SW (Pickup) PGE D-13 INT LTS 132 Mbec Page 8-114/ CGO_LP PO CHMSL-CRGO PRT# PGE 8- CRGO LP 116a-1 CHMSL LP 110a-2 CHMSL/Cargo Lamp - Cargo eau_cargo_lp 002 UPC FN TC 251/-2 J3-9 FFGLMP (DI) 149. LU DK/WHT 0.5 TWP HDLNR TC_FFOGSW J3-D HDLNR 149 J1-2 lk sm - Mbec Ctsy Cargo Lp mbec_ UPC FN DIMMING CNTL 230 Mbec Page 8-11/ -1 FRONT FOG LMP Front Fog Lamp Rly Page LU DK/WHT 0.5 TWP 149. LU DK/WHT 0.5 TWP FGCG_KLT 230. RN/WHT 192. ORN 0.35 TWP FFOG_RLY -T GRN DK/WHT TC_CLPSW F E C 251/-2 J4-6 TC CRGO LPS GND ILLUM FOG LMPS FOG LMPS ON Sw sm - Frt Fog/Cargo Lp (PU) cargo_fog_sw 003 UPC FN D -T PPL/WHT 1851 CGO_FOG_GND FOGLP_DIM Gnd Zone #18 (SC1851) Page 8-14a -12 DIMMING CONTROL 1382 Mbec Page 8-11/ -2 OJECT ID REVISION STGE VERSION LST CHNGED Y 5:30:14 pm ORGNIZTION CRGO LMP SW (PU) CK EU 03 X &03/43/53 k33116a 005 PROD 1 CKMC03 Panel Set: 1 schematic sheet1 90 $IVEDWORK/k33116a 005 Thursday, January 3, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33116a_005_01

270 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Dimming Control (w/o Y91) PGE D-14 PWR DOOR LOCKS Sw Door Lock klt Page PWR DOOR LOCKS Sw Dr Lock Page HEDLMPS Hdlp Lvl klt Page PSIR Sir Sw Page TC J1-E U3 -YE9 EXPORT (T89) 230 DRV_LKSW PSS_LKSW 230 HDLP_LVL PSIR_KLT TC_KLT1 PWR SUNROOF Sunroof Sw Page J3- lk sm - acklighting LFDOOR lbec_ UPC FN 230 J1-F TC_KLT S/VSES Tcs Sw Page &U3-YE RN/WHT RFDOOR J2-D RFDOOR 230 J1-2D lk sm-rbec Passlock Sw rbec_ H FN FOGLP_EXP_R RER FOG LMPS Rear Fog ack Lighting Page SWC_KLT TRNSFER CSE CNTRL SNRF_KLT Transfer Case Sw &06/36&YE Page 8-38//C -3/2/3 230 TCS_KLT RN/WHT &U3-YE9 &NP1/NP8/NR RN/WHT RN/WHT J1-C2 J1-11 &U3-YE RN/WHT 230. RN/WHT STEERING WHL CNTL Steering Whl Sw Page &C99 &YE RN/WHT &T RN/WHT 230. RN/WHT MEC RKCLTCH S230 J1-D2 230 J1-C ODY HDLNR Mbec acklighting 230 MEC230 mbec_230b Page J1-C8 J1-8 J10-F J4- J5-F J1-D3 =&ZX3 &PTO RN/WHT RN/WHT RKCLTCH 230 SEO_KLT PTO_KLT lk sm - Mbec acklighting (PWM) mbec_230a 001 UPC FN =&JL4-NR4/NW &NYS 230 &06/36/43&YE9 &06/36&YE RN/WHT RN/WHT RN/WHT RN/WHT RN/WHT ODY HDLNR 230 HVC_KLT VSES_KLT 230 LRWIN_KLT UGDO_KLT QS4_KLT 230 J Mbec acklighting mbec_230a Page lk sm - Mbec acklighting (PWM) mbec_230b 001 UPC FN &5Y0/5X /TRW/5G4 EXTERIOR LIGHTING Seo Sw Page 8-110F -1 MSR_KLT PTO Pto Sw Page HVC Hvac Cntrl Page 8-60/65/68-1 FOGLP_EXP_F REKES VSES Sw Page HDLPSW_KLT QS4 Qs4 Sw Page FGCG_KLT POWER WINDOWS Lr Window Sw Page RRWIN_KLT 230 RRHVC_KLT INTERIOR LIGHTING Ugdo Sw Page &T89 RIDE SELECT Msr Sw (Manual) Page FRONT FOG LMPS Front Fog ack Lighting Page 8-103C -1 INTERIOR LIGHTING Hdlp Sw Page 8-114/ -4/3 RER WER/WSHER/CRGO LP Rr Wiper/Fog & Cargo/Fog Page 8-92/116/ -1 POWER WINDOWS Rr Window Sw Page RER HVC Rr Hvac Control Page 8-66//69-2 DIMMING CONTROL CK EU Panel Set: 1 of 2 03 X -Y91 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:31:31 pm ORGNIZTION k3311a schematic sheet1 351 $IVEDWORK/k3311a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMCE Tuesday, March 18, 2003 Panel Set: 1 K3311a_008_01

271 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Dimming Control (w/o Y91) PGE D-15 TC J1- HEDLMPS Headlamp Sw Page STEERING CONTROL Qs4 Page FOG LMPS Rr Fog Lp On Page TC_CTLDIM HDLP_DIM QS4_DIM RRFOG_IND PPL/WHT PPL/WHT &NYS PPL/WHT &T PPL/WHT S1382 J1-E J1-E RKCLTCH J5- J1-F J1-E4 lk sm - Mbec Control Dimming mbec_ UPC FN STEERING WHEEL- HIRES SNSR Hires Snsr Ref Page &JL4/NYS/Z HIRES_REF J2-11 POT REF TC_POTREF TC J3-8 DIM POT TC_DIMPOT J4-6 POT RTN TC_POTRTN &JL4/NYS/Z55 -JL4/NYS/Z55 =&ZX PPL/WHT RKCLTCH MSR_DIM MSR MSR Sw Page &5X/5YO/ TRW/5G4 SEO_DIM EXTERIOR LIGHTING Seo Sw Page 8-110F -1 &NP1/NP8/NR PPL/WHT TC_DIM TRNSFER CSE CNTRL 4WD Indicator Sw Page 8-38/C/D -3/2/3 CRGO/RER WER Frt Fog Lps Sw Page 8-92/103C/116-1/ FOGLP_DIM &JL4/NYS/Z GR S1056 &JL4/NYS/Z GR &JL4/NYS/Z55 PO HDLP SWITCH PRT# PGE 8- DIM CNTRL 11-3 INT LTS 114/-4/3 HDLP JL4/NYS/Z GR ORN/LK -JL4/NYS/Z V REF 36 4 DIMMING POT GR/LK POT RTN lk sm - Hdlp Sw hdlp_dim_sw 004 UPC FN DIMMING CONTROL CK EU 03 X -Y91 Panel Set: 2 of 2 schematic sheet1 351 $IVEDWORK/k3311a 008 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:31:31 pm ORGNIZTION k3311a 008 PROD 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMCE Tuesday, March 18, 2003 Panel Set: 2 K3311a_008_02

272 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Dimming Control (w/y91) PGE D-16 HETED SETS Lr Htd Seat Sw Page SWC_KLT PWR SUNROOF Sunroof Sw Page HETED SETS Rr Htd Seat Sw Page LRSET_KLT STEERING WHL CNTL Steering Whl Sw Page SNRF_KLT RRSET_KLT & RN/WHT CONSOLE PSIR Sir Sw Page PSIR_KLT REMOTE CD PLYER CD klt Page TC 251/-3 J1-E 230. RN/WHT D3 D3 & RN/WHT S M GT CONSOLE 40F GT J1-D2 230 &C RN/WHT &YE RN/WHT &U1S 230. RN/WHT ODY HDLNR J1-C8 J1-8 &NYS 230. RN/WHT =&JL4-NR4/NW 230. RN/WHT 230 HVC_KLT 230 FGCG_KLT VSES_KLT CDX_KLT J1-C3 230 J10-F J J4- Mbec acklighting mbec_230a Page &06/36&YE =&06/36&YE9&Y91#&53&Y91 RN/WHT 230. RN/WHT TWP ODY 0.35 HDLNR RRWIN_KLT 230. RN/WHT TC_KLT1 230 MEC230 RRHVC_KLT lk sm - Mbec acklighting (PWM) mbec_230b 001 UPC FN MEC230 Mbec acklighting mbec_230b Page &06/36&YE RN/WHT J1-C RKCLTCH J5-F RN/WHT CIGR /UX PWR Clock nalog Page 8-19C -2 &Z5 J J1-D3 CLK_KLT lk sm - Mbec acklighting (PWM) mbec_230a 001 UPC FN HVC Hvac Cntrl Page 8-60/65/68-1 RER WER/WSHER/CRGO LP Rear Wiper Sw Page 8-92/116/ -1 RKES VSES Sw Page POWER WINDOWS Rr Window Sw Page RRHVC Rr Hvac Cntr Page 8-66//69/ -2 =&ZX RN/WHT RKCLTCH &UM RN/WHT HDLPSW_KLT QS4_KLT 230 LRWIN_KLT UGDO_KLT 230 SEO_KLT MSR_KLT 230 RP_KLT RDIO_KLT INTERIOR LIGHTING Hdlp Sw Page 8-114/ -4/3 QS4 Qs4 Sw Page POWER WINDOWS Lr Window Sw Page INTERIOR LIGHTING Ugdo Sw Page 8-114/ -1 &5G4/5Y0 /5XL/TRW EXTERIOR LIGHTINGS MSR SEO Sw Msr Sw Page 8-110F -1 Page RER PRKING ID Rpa Disable Sw Page INFOTINMENT Radio Page 8-1C -1 DIMMING CONTROL(W/Y91) CK EU Panel Set: 1 of 2 03 X &Y91 schematic sheet1 221 OJECT ID k3311b $IVEDWORK/k3311b 010 REVISION 010 STGE PROD VERSION 1 LST CHNGED Y Tuesday, January 21, :44:20 pm ORGNIZTION CKMCE Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K3311b_010_01

273 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Dimming Control (w/y91) PGE D-1 HEDLMPS Headlamp Sw Page TC 251/-3 J1- STEERING CNTRLS QS4 Control Dimming Page RER PRKING ID RP Disable Sw Page HDLP_DIM TC_CTLDIM QS4_DIM RP_DIM PPL/WHT PPL/WHT &NYS PPL/WHT &Z PPL/WHT TC S1382 J1-E J1-E9 J1-F RKCLTCH lk sm - Mbec Control Dimming mbec_ UPC FN STEERING WHEEL-HIRES SNSR Hires Snsr Ref Page &JL4/NYS/Z55 HIRES_REF &JL4/NYS/Z55 251/-3 J2-11 POT REF TC_POTREF -JL4/NYS/Z55 251/-3 J3-8 DIM POT TC_DIMPOT 251/-3 J4-6 POT RTN TC_POTRTN J5- J1-E4 &JL4/NYS/Z GR =&ZX PPL/WHT RKCLTCH CRGO/RER WER Cargo Frt Fog Lps Page 8-92/103C/ FOGLP_DIM 0.35 TWP &JL4/NYS/Z GR &JL4/NYS/Z55 S1056 -JL4/NYS/Z GR ORN/LK -JL4/NYS/Z GR/LK MSR_DIM MSR MSR Sw Page PO HDLP SWITCH PRT# PGE 8- DIM CNTRL 11-3 INT LTS HDLP V REF DIMMING POT 36 4 POT RTN lk sm - Hdlp Sw hdlp_dim_sw 004 UPC FN DIMMING CONTROL(W/Y91) CK EU Panel Set: 2 of 2 03 X &Y91 schematic sheet1 221 OJECT ID k3311b $IVEDWORK/k3311b 010 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 Tuesday, January 21, :44:20 pm ORGNIZTION CKMCE Panel Set: 2 K3311b_010_02

274 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Compartment Lamps PGE D-18 INTERIOR LIGHTING Mbec 132 Page 8-114/-1 GOXLP_FD =&06/36/43#&03/53&YE ORN Lamp sm-glove ox glvbox_lamp 001 UPC FN GOXLP_GND Gnd Zone #10 Page COMPRTMENT LMPS CK EU 03 X Panel Set: 1 schematic sheet1 63 $IVEDWORK/k33118a 004 OJECT ID REVISION STGE VERSION LST CHNGED Y 12:24:59 pm ORGNIZTION k33118a 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMC03 Thursday, March 14, 2002 Panel Set: 1 K33118a_004_01

275 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Trailer and Camper Wiring PGE D LU LT 0.8 GPT CMPER lunt Cut GPT CMPER 19 S22 lunt Cut CP_ WHT 5.0 GPT 19 CMPER 4. LU DK 3.0 GPT 19 CMPER S4 lunt Cut 22 (Page 2) CP_4 J M M/P 280 CMPER EXT 4. LU DK 3.0 GPT 19 CMPER GRN LT 0.8 GPT CMPER S1624 lunt Cut 4 (Page 2) CP_ GRN LT 0.8 GPT CMPER RN 1.0 GPT CMPER S2109 lunt Cut 1624 (Page 2) CP_ RN 1.0 GPT CMPER GRN DK 0.8 GPT CMPER S1619 lunt Cut 2109 (Page 2) CP_ GRN DK 0.8 GPT CMPER YEL 0.8 GPT CMPER S1618 lunt Cut 1619 (Page 2) CP_ YEL 0.8 GPT CMPER 42. RED 3.0 GPT 19 CMPER S42 lunt Cut 1618 (Page 2) CP_ RED 42 (Page 2) 3.0 GPT CMPER 19 C F D G E Camper Inline Connector camper_inl_conn 001 UPC FN CMPER WIRING CK EU Panel Set: 1 03 X &UY1 schematic sheet1 13 OJECT ID k33119c $IVEDWORK/k33119c 001 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE ET2 1 Wednesday, June 6, :10:04 am ORGNIZTION CKMC03 Panel Set: 1 K33119c_001_01

276 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Trailer and Camper Wiring PGE D-180 CP_22 (Page 1) 22. WHT 5.0 GPT CMPER 19 CP_4 (Page 1) 4. LU DK 3.0 GPT 19 CMPER CP_1624 (Page 1) GRN LT 0.8 GPT CMPER CP_2109 (Page 1) RN 1.0 GPT CMPER CP_1619 (Page 1) GRN DK 0.8 GPT CMPER CP_1618 (Page 1) YEL 0.8 GPT CMPER CP_42 (Page 1) 42. RED 3.0 GPT CMPER 19 E G D F C Trailer Inline Connector trlr_inln_conn 002 UPC FN CMPER WIRING CK EU Panel Set: 2 03 X &UY1 schematic sheet1 13 OJECT ID k33119c $IVEDWORK/k33119c 001 REVISION 001 STGE VERSION ET2 1 LST CHNGED Y Wednesday, June 6, :10:04 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33119c_001_02

277 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Trailer and Camper Wiring PGE D-181 EXPORT TRILERING HEVY DUTY TRILERING GND ZONE CKT 35 SERIES GND ZONE CKT 36 SERIES TRLR JMPR LUNT CUT GND ZONE CKT 35 SERIES GND ZONE 1 1 CKT UTILITY GND ZONE CKT 36 SERIES MEC 4 CKT TT STUD1 42 CKT TRLR JMPR LUNT CUT TT STUD2 242 CKT MEC GND ZONE 1 1 CKT UTILITY 4 CKT TRLR JMPR LUNT CUT TT STUD1 42 CKT GND ZONE CKT GND FLSHER LT TRLR 1618 CKT TRLR JMPR LUNT CUT TRLR JMPR LUNT CUT FOR ELEC RKE MDL 4 CKT RPO = UY 4 CKT RPO = UY TT STUD2 242 CKT STUD2 FLSHER RT TRLR 1619 CKT TRLR JMPR LUNT CUT TRLR JMPR LUNT CUT FOR ELEC RKE MDL 242 CKT 1618 CKT FLSHER LT TRLR TT Intpk/Rfmkr 2409 CKT PK LMP IGN3 TRLR /U 1624 CKT TRLR JMPR LUNT CUT TRLR JMPR LUNT CUT FOR ELEC RKE MDL 1620 CKT FLSHER RT TRLR 1619 CKT TT Veh CHMSL 1620 CKT CHMSL TT TRLR PRK 2109 CKT TRLR JMPR LUNT CUT TRLR JMPR LUNT CUT FOR ELEC RKE MDL 10 CKT RPO = Z82 IGN3 TRLR /U 1624 CKT TT TRLR PRK 2109 CKT TRILER INLINE CONN RPO = UY & Z82 3 TRILER CONN RPO = Z82 CMPER TRILERING 1620 CKT TRLR JMPR LUNT CUT 1 CKT TRLR JMPR LUNT CUT 42 CKT TRLR JMPR LUNT CUT 4 CKT TRLR JMPR LUNT CUT 1618 CKT TRLR JMPR LUNT CUT 1619 CKT TRLR JMPR LUNT CUT 1624 CKT 2109 CKT TRLR JMPR LUNT CUT TRLR JMPR LUNT CUT FETURES: TRILER HRNESSES: EXPORT HEVY DUTY CMPER CMPER INLINE TRILER INLINE CONN RPO = UY & Z82 3 TRILER CONN RPO = Z82 CLSS-2: N/ Miscellaneous PROJECT 03 C/K EU Panel Set: 1 schematic sheet1 49 $IVEDWORK/k33m_misc 00 OJECT ID REVISION STGE VERSION LST CHNGED Y 1:04:30 pm k33m_misc 00 X & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 Friday, September 21, 2001 ORGNIZTION CKMC03 K33m_misc_00

278 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Door Locks: ase (w/o DDM/PDM) PGE D-182 Locks (Lh ec) Page 8-10/ -1/9 lk sm - ase Power Doors lbec_ UPC FN 20 LKUNLK_RLY DRLK_GND 842 LOCKS S6040 Gnd Zone #10(Lbec 10) Page S Door Lock Relay Door Unlock Relay Driver Unlock Relay DOOR LOCKS Driver Miniwedge Page S295 S ODY LFDOOR ODY ODY ODY 694 UNLK_DRVR J3- J4- J J1-2 J4-K J3-C J1-C9 J4-L J1-4 J1-D11 J4-F J4-E J LU LT 0.35 TWP &06/36/ GR 0.8 TWP ODY 245. LU DK &06/36/ TN 0.8 TWP ODY GRN LT 295. GR &06/36/ GR 0.8 TWP ODY RRDR_LK 294. TN 0.8 TWP &06/36/ TN 0.8 TWP ODY RRDR_UNLK 0.8 TWP (Page 3) 294 (Page 3) LRDR_LK LRDR_UNLK TC J2-6 DOOR LOCK RLY (LSD) &ZW GR 0.8 TWP ODY CGO_DRLK LFDR_LK 295 (Page 2) RFDR_LK (Page 2) (Page 3) TC J2-3 DOOR UNLK RLY (LSD) 294 CGO_DRUNLK SIDE CONTCT PLTES Cargo Door Unlock Page (Page 3) TC J2- DRVR DOOR UNLK (LSD) DRLOCK_RLY DRUNLK_RLY DRV_UNLOCK SIDE CONTCT PLTES Cargo Door Lock Page RFDR_UNLK (Page 2) POWER DOOR LOCKS SE (W/O DDM/PDM) CK EU 03 X &U3-YE9 k33130a Panel Set: 1 schematic sheet1 283 $IVEDWORK/k33130a 010 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 12:34:20 pm Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 1 K33130a_010_01

279 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Door Locks: ase (w/o DDM/PDM) PGE D-183 LFDR_LK (Page 1) 295. GR 0.8 TWP LFDOOR J1- PO MINIWEDGE PRT# PGE 8- DRLK M LOCK UNLOCK JR RTN JR KEY RTN KEY UNLOCK Driver Miniwedge drv_front_wedge 001 UPC FN J J J J1- J2-D J2- J3- J3- J3-F LFDOOR 694 UNLK_DRVR DOOR LOCKS Driver Unlock Relay Page TN 0.8 TWP LFDOOR Gnd Zone #10 Page =-YE9 45. GR/LK LFDOOR J1-F4 lk sm - ase Power Doors lbec_ =-YE9 UPC FN 45. GR/LK LFJR_GND J3-K lk sm - Drv Miniwedge LFDOOR lbec_ UPC FN 45 LFDR_JR LFDOOR (WUFR) J4-4 TC GR 0.8 TWP RFDOOR J- RFDOOR PO MINIWEDGE PRT# PGE 8- DRLK M J1- LOCK UNLOCK J TN 0.8 TWP RFDOOR RFDOOR J1- J-D J1-D 10 JR RTN J2- RFJR_GND Gnd Zone #10 Page JR J2-C =-YE9 46. LK/WHT RFDOOR J2-E RFDOOR J1-2E KEY RTN J3- KEY UNLOCK J3- lk sm-rbec Pass Miniwedge rbec_ H FN Pass Miniwedge pass_frnt_wedge 001 UPC FN J J J =-YE9 46. LK/WHT RFDR_JR RFDR_LK 295 (Page 1) RFDR_UNLK 294 (Page 1) RFDOOR (WUFR) J4-5 TC POWER DOOR LOCKS SE (W/O DDM/PDM) CK EU 03 X &U3-YE9 k33130a Panel Set: 2 schematic sheet1 283 $IVEDWORK/k33130a 010 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 12:34:20 pm Tuesday, September 24, 2002 ORGNIZTION CKMCE Panel Set: 2 K33130a_010_02

280 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Door Locks: ase (w/o DDM/PDM) PGE D-184 SIDE CONTCT PLTES Cargo Door Lock Page LRDR_LK RRDR_LK (Page 1) (Page 1) MTR_DRLK P P F M/P ODY LRDOOR 1M M/P P P F M/P MXD ODY RRDOOR 1M M/P MXD =&06&ZW GR 0.8 TWP DRCGOR &06/36/ GR 0.8 TWP LRDOOR &06/36/ GR 0.8 TWP RRDOOR M Mtr - Cargo door_lk_mtr UPC FN M J1- UNLOCK JR RTN JR LR - Door Miniwedge J1- LOCK M UNLOCK JR RTN JR PO MINIWEDGE PO MINIWEDGE PRT# PGE 8- LOCK PRT# PGE 8- DRLK lr_wedge 001 DRLK UPC FN J J RR - Door Miniwedge rr_wedge 004 UPC FN J J J1- J2-D J2- J1- J2- J2-C =&06&ZW TN 0.8 TWP DRCGOR &06/36/ TN 0.8 TWP LRDOOR &06/36/ LK 0.8 TWP LRDOOR &06/36/43 4. LU LT/LK LRDOOR &06/36/43 &06/36/ TN LK 0.8 TWP 0.8 TWP RRDOOR RRDOOR &06/36/43 4. LU LT/LK RRDOOR SIDE CONTCT PLTES Cargo Door Unlock Page N N M M H H M M/P LRDOOR ODY 10F M/P N N M M H H M M/P MXD RRDOOR ODY 10F M/P MXD MTR_DRUNLK LRDR_UNLK =&06/36/43-YE9 11. LK 0.8 TWP ODY =&06/36/43-YE9 4. LU LT/LK ODY RRDR_UNLK =&06/36/43-YE9 =&06/36/43-YE LK GRN LT/LK 0.8 TWP ODY ODY 294 (Page 1) LRJR_GND 294 (Page 1) RRJR_GND Gnd Zone #11 Page LRDR_JR Gnd Zone #12 Page RRDR_JR LRDOOR (WUFR) J6-3 TC RRDOOR (WUFR) 251/-2 J6-2 TC POWER DOOR LOCKS SE (W/O DDM/PDM) CK EU 03 X &U3-YE9 k33130a Panel Set: 3 schematic sheet1 283 $IVEDWORK/k33130a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:34:20 pm ORGNIZTION 010 PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 3 K33130a_010_03

281 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Door Locks: ase (w/o DDM/PDM) PGE D-185 DIMMING CNTRL Door Lock Sw Page UNLK_ (Page 5) 230 PSS_LKSW LK_ (Page 5) J1-E 194 RFDOOR J-E J1-F 195 RFDOOR J-F lk sm-rbec Pass Side Lock rbec_ H FN WHT LU LT RFDOOR RFDOOR F UNLK UNLOCK LOCK LK Sw sm - Pass Lock door_lock_sw 002 UPC FN D 10. LK RFDOOR E LK/WHT RFDOOR J2-C RFDOOR 1851 J1-2C lk sm-rbec Pass Lock Gnd rbec_ H FN RFKLT_GND 1851 RFDRLK_GND Gnd Zone #10 Page (Mbec 1851) Page POWER DOOR LOCKS SE (W/O DDM/PDM) 03 X &U3-YE9 k33130a CK EU Panel Set: 4 schematic sheet1 283 $IVEDWORK/k33130a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:34:20 pm ORGNIZTION 010 PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 4 K33130a_010_04

282 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Door Locks: ase (w/o DDM/PDM) PGE D-186 UNLK_194 (Page 4) LK_195 (Page 4) 195. LU LT 194. WHT 195. LU LT J1-11 J1-D lk sm - Drv/Pass Door Sw lbec_ UPC FN 194. WHT DIMMING CNTRL Door Lock Sw Page RN/WHT LFDOOR DRV_LKSW DRV_SIDE 194 (Page 5) TC_LKSW1 LOCK SW (WUF) J4-5 TC LU LT 0.35 LFDOOR LFDOOR TWP S ODY 194 ODY J3-J J4-D J4-M S LFDOOR J WHT LFDOOR TC_UNLKSW1 UNLK SW (WUF) J4-10 TC DRV_SIDE F (Page 5) UNLK UNLOCK LOCK LK Sw sm - Driver Lock door_lock_sw 002 UPC FN D E J3-M 10 LFKLT_GND &U3-YE LK/WHT LFDOOR LFDOOR 1851 lk sm - Flasher lbec_ UPC FN FLS_GND Lbec Page EXTERIOR LIGHTING Flasher sm Page 8-110/ POWER DOOR LOCKS SE (W/O DDM/PDM) 03 X &U3-YE9 k33130a CK EU Panel Set: 5 schematic sheet1 283 $IVEDWORK/k33130a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:34:20 pm ORGNIZTION 010 PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 5 K33130a_010_05

283 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Door Locks: Uplevel (w/ DDM/PDM) PGE D-18 Locks (Lbec) Page 8-10/ -1/9 lk sm - Uplevel Power Doors lbec_ UPC FN 20 LKUNLK_RLY 842 LOCKS S S DRLK_GND Gnd Zone #10(Lbec 10) Page Rear Door Lock Relay Rear Door Unlock Relay S S ODY ODY ODY ODY J1-2 J4-L J4-K J1-4 J4-F J4-E &06/36/ GR/LK &06/36/ GR 0.8 TWP ODY &06/36/ TN/LK &06/36/ TN 0.8 TWP ODY &06/36/ GR 0.8 TWP ODY RRDR_LK (Page 4) &06/36/ TN 0.8 TWP ODY LRDR_LK TC J2-6 RER DOOR LK RLY (LSD) &ZW GR 0.8 TWP ODY &E GR 0.8 TWP ODY GTE_LK (Page 3) (Page 4) TC J2-3 RER DOOR UNLK RLY (LSD) &E TN RRDR_UNLK 0.8 TWP 294 ODY (Page 4) LRDR_UNLK (Page 4) GTE_UNLK (Page 3) 295 CGO_DRLK 294 CGO_DRUNLK RRDR_LKRLY RRDR_UNLKRLY SIDE CONTCT PLTES Cargo Door Lock Page SIDE CONTCT PLTES Cargo Door Unlock Page POWER DOOR LOCKS UPLEVEL (W/DDM/PDM) k33130b CK EU 03 X &YE9 Panel Set: 1 schematic sheet1 204 $IVEDWORK/k33130b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:53:13 pm ORGNIZTION 011 PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 1 K33130b_011_01

284 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Door Locks: Uplevel (w/ DDM/PDM) PGE D GR LFDOOR DRV_DRLK LOCK (HSD/LSD) J2-21 DDM J1- PO MINIWEDGE PRT# PGE 8- DRLK M LOCK UNLOCK JR RTN JR KEY RTN KEY UNLOCK Driver Miniwedge drv_front_wedge 001 UPC FN J J J J1- J2-D J2- J3- J TN 0.35 LFDOOR TWP RN GR/LK LU DK 0.35 TWP LFDOOR LFDOOR LFDOOR 262. GRN LT LFDOOR DRV_DRUNLK LFJR_RTN DRV_DRJR DRKEY_RTN DRKEY_UNLK UNLOCK (HSD/LSD) J2-20 DRTN2 (GND) J2-3 JR J2-18 DDM DRTN1 (GND) J2-2 KEYUNLK (WUF) J2-15 POWER DOOR LOCKS UPLEVEL (W/DDM/PDM) 03 X &YE9 k33130b CK EU Panel Set: 2 schematic sheet1 204 $IVEDWORK/k33130b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:53:13 pm ORGNIZTION 011 PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 2 K33130b_011_02

285 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Door Locks: Uplevel (w/ DDM/PDM) PGE D-189 GTE_LK J1-295 (Page 1) 295. GR RFDOOR LOCK (HSD/LSD) J2-10 PDM PSS_DRLK M LOCK UNLOCK J TN RFDOOR UNLOCK (HSD/LSD) J2-11 PSS_DRUNLK JR RTN J GRN DK RFDOOR DRTNR1 (GND) J2-20 RFJR_RTN PDM JR J2-C 46. LK/WHT RFDOOR DOOR JR J2-5 PSS_DRJR KEY RTN J3-53. LU LT 0.35 TWP RFDOOR DRTNR2 (GND) J2-6 PSSKEY_RTN KEY UNLOCK J3- SIDE CONTCT PLTES Cargo Door Unlock Page Pass Miniwedge pass_frnt_wedge UPC FN J J J F F F GT 280 ODY EGTE EXT 12M GT =&06&E GR 0.8 TWP EGTEXT D D F M/P 1 EGTE EXT ENDGTE 8M M/P PO MINIWEDGE PRT# PGE 8- DRLK SIDE CONTCT PLTES Cargo Door Lock Page MTR_DRLK MTR_DRUNLK UTILITY PU &06/ GRN LT RFDOOR &06/ GRN LT RFDOOR F M/P 1 RFDOOR ODY 3M M/P &06&ZW GRN LT ODY S265 &06/ GRN LT RFDOOR UTILITY &03/43/ GRN LT RFDOOR PU PSSKEY_UNLK =&06&E GR 0.8 TWP ENDGTE M =&06&E TN 0.8 TWP ENDGTE M M/P 1 C ENDGTE EGTE EXT C 8F M/P Mtr-Lift Gate lift_gate_mtr 001 UPC FN =&06&ZW GR 0.8 TWP DRCGOR M =&06&ZW TN 0.8 TWP DRCGOR Mtr - Cargo door_lk_mtr UPC FN CGO_KEY =&06&E TN SIDE CONTCT PLTES Cargo Door Key Unlock Sw Page KEYUNLK (WUF) J2-24 PDM GTE_UNLK 294 (Page 1) 0.8 TWP EGTEXT E E M GT 280 EGTE EXT ODY 12F GT POWER DOOR LOCKS UPLEVEL (W/DDM/PDM) k33130b CK EU 03 X &YE9 Panel Set: 3 schematic sheet1 204 $IVEDWORK/k33130b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:53:13 pm ORGNIZTION 011 PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 3 K33130b_011_03

286 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Power Door Locks: Uplevel (w/ DDM/PDM) PGE D-190 LRDR_LK RRDR_LK 295 (Page 1) 295 (Page 1) P P F M/P ODY LRDOOR 1M M/P P P F M/P MXD ODY RRDOOR 1M M/P MXD &06/36/ GR 0.8 TWP LRDOOR &06/36/ GR 0.8 TWP RRDOOR J1- J1- PO MINIWEDGE PRT# PGE 8- DRLK M LOCK UNLOCK M LOCK UNLOCK JR RTN JR PO MINIWEDGE PRT# PGE 8- DRLK LR - Door Miniwedge lr_wedge 001 UPC FN JR J RTN JR J RR - Door Miniwedge rr_wedge 004 UPC FN J J J1- J2-D J2- J1- J2- J2-C &06/36/ TN 0.8 TWP LRDOOR &06/36/ LK LRDOOR &06/36/43 4. LU LT/LK LRDOOR &06/36/ TN 0.8 TWP RRDOOR &06/36/ LK RRDOOR &06/36/43 4. LU LT/LK RRDOOR N N M M H H M M/P LRDOOR ODY2 10F M/P N N M M H H M M/P MXD RRDOOR ODY2 10F M/P MXD &06/36/ LK ODY &06/36/43 4. LU LT/LK ODY &06/36/ LK ODY &06/36/ GRN LT/LK ODY LRDR_UNLK 294 (Page 1) LRJR_GND RRDR_UNLK 294 (Page 1) RRJR_GND Gnd Zone #11 Page Gnd Zone #12 Page LRDR_JR RRDR_JR LRDOOR (WUFR) J6-3 TC RRDOOR (WUFR) J6-2 TC POWER DOOR LOCKS UPLEVEL (W/DDM/PDM) 03 X &YE9 k33130b CK EU Panel Set: 4 schematic sheet1 204 $IVEDWORK/k33130b & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 REVISION STGE VERSION LST CHNGED Y 12:53:13 pm ORGNIZTION 011 PROD 1 CKMCE Tuesday, September 24, 2002 Panel Set: 4 K33130b_011_04

287 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Theft Deterrent Content PGE D-191 PO STEERING COLUMN PRT# PGE 8- IGNSW CRUISE HORN SIR 04-2 WER TRNHZ EMSW KEYMNDR PSSLOCK PSSKEY TMPER HLL STEERING WHEEL-HIRES SNSR Hires Snsr Page SECURITY HLL 1851 HIRES_RTN STRG Col sm - Passlock Sw passlock_snsr 003 UPC FN IGN0 Fuse (Uh ec) Page 8-10/ -14/12 10 PKEY_IGN0 TC att Fuse (Uh ec) Page 8-10/ -8/3 10 PWR DT 28 NLOG RTN CL2_PKEY PKEY_PWR &T PNK SERIL DT LINK Class II Page &T ORN -T RED/WHT -T YEL 0.35 TWP LK PSS_LKPWR PSS_LKDT PSS_LKRTN PLPWR PLRTN PO STEERING COLUMN PRT# PGE 8- IGNSW CRUISE HORN SIR 04-2 WER TRNHZ EMSW KEYMNDR PSSLOCK PSSKEY PKEY_GND 0.35 TWP C6 C C5 PSS KEY III STRG Col sm - Passkey passkey_snsr 002 UPC FN 251/-4 J2-11 PLDT (/D) 251/-4 J3-6 TC 251/-4 J2- STRG COL SM Turn/ Hazard Sw Page 8-110/ -8/ TO COME: NOTE: POWER SOUNDER & HOOD OPEN SW THEFT DETERRENT CONTENT CK EU Panel Set: 1 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 9:20:18 am ORGNIZTION k33133a 00 PROD schematic sheet1 164 $IVEDWORK/k33133a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Thursday, ugust 8, 2002 Panel Set: 1 K33133a_00_01

288 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Theft Deterrent Content PGE D-192 SIDE CONTCT PLTES RH Side Page GTE_JR &06&E PNK/LK EGTEXT F M/P 1 EGTE EXT ENDGTE 8M M/P &06&E PNK/LK ENDGTE S1303 &06&E52 &06&E PNK/LK PNK/LK 0.35 TWP ENDGTE ENDGTE &06&E PNK/LK ENDGTE &06&E PNK/LK ENDGTE Lift Glass jar lift_glass_ajar 001 UPC FN L-Gate jar eau_gate_ajar 001 UPC FN R-Gate jar eau_gate_ajar 001 UPC FN LGLSS_GND 14 LGTE_GND 14 RGTE_GND RRWPR_PRK Gnd Zone #14 (14 Splice) Page Gnd Zone #14 (14 Splice) Page RER WER/WSHER Gnd Zone #14 (14 Splice) RR Wiper Mtr Page Page THEFT DETERRENT CONTENT CK EU Panel Set: 2 03 X schematic sheet1 164 $IVEDWORK/k33133a 00 OJECT ID REVISION STGE VERSION LST CHNGED Y 9:20:18 am ORGNIZTION k33133a 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 00 PROD 1 CKMC03 Thursday, ugust 8, 2002 Panel Set: 2 K33133a_00_02

289 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Theft Deterrent Content PGE D-193 TC_KEYIN TOWHLL_SW KEYIN (WUFR) 251/-1 J4-1 TC TRNS (DI) 251/-3 J3-11 TC 80. GRN LT LU LT 0.35 TWP 5 STRG Col sm - Keyin/Towhall Sw keyin_towhall 004 UPC FN EXTERIOR LIGHTING Turn/Haz Sw Page 8-110/ -8/ PO STEERING COLUMN PRT# PGE 8- CRUISE KEY/TOW SWC HDLP EXT LGT TSI VSES ETC KEY_TOW_GND THEFT DETERRENT CONTENT CK EU Panel Set: 3 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 9:20:18 am ORGNIZTION k33133a 00 PROD schematic sheet1 164 $IVEDWORK/k33133a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Thursday, ugust 8, 2002 Panel Set: 3 K33133a_00_03

290 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL rake Trans Shift Interlock (TSI) PGE D-194 PO NSU SW PRT# PGE 8- TSI ECM/PCM STRT TSI_PWR NSU-Reverse Sw nsbu_park_acc 001 UPC FN CKUP LMPS ackup Lamps Page 8-112a -1 PRK CC J2- J &M30/M32/M4/MN8/MT1 25. GRN LT 0.8 TXL J2-D3 25 TSI J1-8 lk sm - Ubec TSI ubec_ UPC FN JF4 &JF GRN LT/LK M GT MXD RKCLTCH 18F GT MXD JF4 -JF GRN LT/LK M GT 1/280 E E RKCLTCH 12F GT 1/ &JF4 -JF GRN LT/LK GRN LT/LK RKCLTCH RKCLTCH E PO Z SW PRT# PGE 8- TSI STOP TSI POLE Zab Sw sm-tsi (W/JF4) btsi_pole_sw2 002 UPC FN PO Z SW PRT# PGE 8- TSI STOP TCC TSI POLE Zab Sw sm-tsi (W/O JF4) btsi_pole_sw1 001 UPC FN F PO STEERING COLUMN PRT# PGE 8- IGNSW ECM 020- ETC CRUISE HORN HIRES WER HDLP TRNHZ PSSLOCK TSI STEERWHL STRG Col sm - Solenoid - TSI eau_btsi_sol 003 UPC FN &JF GRN DK/WHT RKCLTCH F GT MXD 9 RKCLTCH 9 18M GT MXD &JF GRN DK/WHT -JF GRN DK/WHT RKCLTCH F GT 1/280 D RKCLTCH D 12M GT 1/ JF GRN DK/WHT 8 JF4 -JF4 10 TSI_GND 10 Splice (Mbec) Page RKE TRNS SHIFT INTERLOCK-TSI 03 X k33138a CK EU Panel Set: 1 schematic sheet1 95 $IVEDWORK/k33138a 006 REVISION STGE VERSION LST CHNGED Y 3:26:35 pm 006 PROD 1 Tuesday, pril 2, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 1 K33138a_006_01

291 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-195 RPO LEGEND PO EP SENSOR PRT# PGE 8- EP SNSR EP MOTOR lk sm EP - Sensor eap_snsr 004 UPC FN G2 = POWER SET N3 = MEMORY SET JF4 = EP KUP = ETC NYS = QS4 3 2 &JF WHT 0.5 TWP RKCLTCH 2 2 &JF RN/WHT 0.5 TWP RKCLTCH 1 1 &JF PNK 0.5 TWP RKCLTCH F GT MXD RKCLTCH 18M GT MXD &JF WHT &JF RN/WHT &JF PNK F GT MXD ODY 22M GT MXD &06/36&G WHT 0.5 TWP ODY &06/36&G RN/WHT 0.5 TWP ODY &06/36&G PNK 0.5 TWP ODY J1-P J1-R J1-C FEED RTN SIG DRIVER SET PSS CK RETURN PSS HET SUPPLY DSPS PWR DSPS RTN DRV SET ELT SW FD DSM GND DSM CL2 J1-G &G LU LT 0.8 TWP ODY PSS_RTN (Page 5) J1-H &G LU DK 2.0 TWP 19 ODY PSS_HSUP (Page 4) J1-F J1-J LU DK ODY PSELT 1363 (Page 4) J1-E 03/53 J1-S 06/36/43 &06/36/43&G1 11. LK 3.0 TWP 19 ODY PU J1-D UT &06/36&G RN/WHT ODY 55 DPOS_SNSR SELT_RTN 238 DRV_SELT 12 DSM_GND1 DSM_GND DSM_CL2_PU DSM_CL2_UT &03/43/53 &G2 SIR Sdm-GF Module Page 8-4/ -2 SIR Sdm-GF Module Page 8-4/ -2 SIR Drv Seat elt Page 8-4/ -1 Gnd Zone #12 Page Serial Data Link Serial Data Link Gnd Zone #11 Class 2 Class 2 Page Page Page SETS (DRIVER & PSSER) CK EU Panel Set: 1 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 2:19:26 pm ORGNIZTION k33140a 010 PROD schematic sheet1 361 $IVEDWORK/k33140a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Wednesday, July 31, 2002 Panel Set: 1 K33140a_010_01

292 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-196 PSS_HSENS (Page 4) PSS_HSRTN (Page 5) PSS_CRTN (Page 5) &G LU DK 0.5 TWP ODY &G LU LT 0.5 TWP ODY Seats (Mbec_642) Page 8-10/ -11/8 &G PNK 0.8 TWP ODY SIR(SDM & OS) Sdm Page SIR(SDM & OS) Sdm Page &G1 &06/36 &06/ DSM_T 2105 DRV_ROOFH 2106 DRV_ROOFL J1-K J1-L J1- J1- J2- J2- DRIVER SET PSS HET SENS RTN PSS HET SENS VTT2 PSS CUSHION RETURN LSGH LSGL Driver Seat Module driver_seat 004 FN UPC J J NOTE: CONN# ON SET SIDE = SETS (DRIVER & PSSER) CK EU 03 X Panel Set: 2 schematic sheet1 361 OJECT ID k33140a $IVEDWORK/k33140a 010 REVISION STGE VERSION LST CHNGED Y 2:19:26 pm 010 PROD 1 Wednesday, July 31, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 2 K33140a_010_02

293 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-19 EP Fuse (Ubec) Page 8-10/ -8/6 15 &JF EPRLY_PWR &JF PPL &JF YEL TWP TWP RKCLTCH RKCLTCH D 9 9 &JF ORN 1.0 TWP RKCLTCH M GT MXD RKCLTCH 18F GT MXD C E F Eap-Relay (relay ) eap_relay 001 UPC FN C Conn 3F M/P 280 LFDOOR C Conn 3M M/P &JF LU LT 0.5 TWP LFDOOR &JF LU LT 0.5 TWP LFDOOR EP_RTN1 S5499 &JF LU LT 0.5 TWP LFDOOR 6 6 &JF PPL 0.5 TWP 4 4 &JF YEL 0.5 TWP F GT MXD RKCLTCH 18M GT MXD &JF PPL &JF YEL 0.35 TWP LFDOOR LFDOOR EP_RTN2 EP_FWD EP_FT &JF LU LT 1.0 TWP RKCLTCH &JF ORN/LK 1.0 TWP RKCLTCH &JF PPL 1.0 TWP RKCLTCH EP LSD J2-24 DDM EP LSD J2-25 DDM EP FWD J2-26 DDM EP FT J2-1 DDM F GT MXD RKCLTCH 18M GT MXD &JF LU LT 1.0 TWP PO EP PRT# EP SNSR EP MOTOR 4 lk sm EP - Motor PGE 8eap_mtr 004 PIN M UPC FN (FT) GND 5 +12V EP MOTOR PIN-OUT CHRT PIN 3 (FWD) +12V GND PEDL MOVEMENT WY FROM DRIVER TOWRD DRIVER SETS (DRIVER & PSSER) CK EU 03 X Panel Set: 3 schematic sheet1 361 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:19:26 pm k33140a $IVEDWORK/k33140a PROD 1 Wednesday, July 31, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 3 K33140a_010_03

294 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-198 SIR (SDM)-PICKUP SDM-GF Page SIR (SDM)-PICKUP SDM-GF Page PSIR_DIS 31 PSIR_EN J3- J3- GND1 GND2 PSIR DISLE LNK PSIR ENLE HET SENS RTN PSSER SET HET SUPPLY PSS SET POSITION SNSR PWR PSS SET POSITION SNSR RTN PSS SET ELT SW FEED W/O 36 J1-S W/36 J1-D J1-G J1-H J1-F J1-J J1-E &L LU DK &G LK 3.0 TWP 19 ODY ODY PSM_GND1 PSS_HSENS 545 (Page 2) PSS_HSUP 249 (Page 1) PSELT 56 PPOS_SNSR 1362 PSS_SELT (Page 1) Gnd Zone #12 Page SIR SIR Sdm-GF Module Pass Seat elt Sw Page 8-4/ -2 Page 8-4/ -1/3 12 PSM_GND2 &G2-36 Gnd Zone #12 Page SETS (DRIVER & PSSER) CK EU 03 X Panel Set: 4 schematic sheet1 361 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:19:26 pm k33140a $IVEDWORK/k33140a PROD 1 Wednesday, July 31, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 4 K33140a_010_04

295 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-199 POWER ISRV MIRROR Isrv Indicator Page POWER ISRV MIRROR Isrv Indicator Page POWER ISRV MIRROR Mbec_1139 Page 8-148/ -1 Seats (Mbec_642) Page 8-10/ -11/8 SIR(SDM & OS) Sdm Page SIR(SDM & OS) Sdm Page &L0 &L0 &L0 30 &L0 &L0 &L0 230 OS_ON 2308 OS_OFF 1139 OS_FD 1440 PSM_T 2103 PSS_ROOFH 2104 PSS_ROOFL PSS_CRTN 2480 (Page 2) J1-L J1-M J1-N J1- J1- J2- J2- OS ON OS GND OS OFF OS DT OS FD PSSER SET VTT2 PSS HET SENS PSS CUSHION RETURN PSS CK RETURN RSGH RSGL Passenger Seat Module passenger_seat 006 FN UPC J J J J1-P J1-K J1-R J1-C 2351 OS_GND 2306 OS_DT PSS_HSRTN 546 (Page 1) PSS_RTN 2433 (Page 1) &L0 &L0 Gnd Zone #23 Page SIR Sdm & os Page 8-4/ -1 NOTE: CONN# ON SET SIDE = SETS (DRIVER & PSSER) CK EU Panel Set: 5 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 2:19:26 pm ORGNIZTION k33140a 010 PROD schematic sheet1 361 $IVEDWORK/k33140a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Wednesday, July 31, 2002 Panel Set: 5 K33140a_010_05

296 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-200 J1-C N3 DRIVER SET EP POS HORIZ LUM MEM SENSOR SNSR POS SNSR RTN TORSO OLSTER MEMORY SENSOR SNSR POS SNSR RTN FRT VERT MEM SENSOR SNSR POS SNSR RTN RER VERT MEM SENSOR SNSR POS SNSR RTN HORIZONTL MEM SENSOR SNSR POS SNSR RTN J4-1 J3-12 J4-5 J3-25 J4-6 J4-3 J4-14 J4-4 CLSS 2 CLSS 2 GND DSM J4-1 J2-8 J4-20 J4-9 J2- J3-13 J4-8 J4-16 J3-26 J3-4 J3-1 J3-5 J3-18 SW1 SET POSITION SENSOR SET ELT SW SET CK HET SENSOR RECLINE MEM SENSOR SNSR POS SNSR RTN FT LUMR E LUMR FWD F OUT OLSTER G IN OLSTER N/C C PWR (Page ) LUMR / OLSTER SW PSS CK RTN PSS HET SUPPLY DSPS PWR RTN SW FEED CLSS-2 GND EP SENS FEED PSS HET SENS EP SENS RTN J1-G J1-H J1-F J1-J J1-E J1-D J1-S J1-P J1-K J1-R NOTE: THIS PGE IS FOR REFERENCE ONLY NOTE: CONN# ON SET SIDE = SETS (DRIVER & PSSER) CK EU 03 X Panel Set: 6 schematic sheet1 361 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:19:26 pm ORGNIZTION k33140a 010 PROD $IVEDWORK/k33140a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Wednesday, July 31, 2002 Panel Set: 6 K33140a_010_06

297 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-201 J1-L J1- J1- J2- J2- N3 DRIVER SET (CONT.) PSS HET SENS PSS CUSH RTN VTT SHORTING RS Driver Seat Mdl drv_seat_lux 002 FN UPC SET SIR 8-WY SET SW SHORTING RS REC DN REC UP RR DN RR UP FRT DN FRT UP FT FWD N/C PWR PE J K L M D E C F SW1 J3-6 J3-19 J3-9 J3-22 J3-10 J3-23 J3-8 J3-21 (Page 6) J3-24 J4-19 J4-2 J2-1 DSM VTT J1-YZKI J2-YZKI J3-MP J4-MP J4-13 J3-1 J4-12 J4-22 J2-9 J2-10 J2-4 J2-5 J1-1 J1-2 J1-3 J1-4 J1-5 J1-6 J1- J1-8 SET CUSHION HETER SET CK HETER M M M M M M TORSO OLSTER MOTOR HORIZONTL LUMR MOTOR RECLINE SET MOTOR HORIZONTL SET MOTOR RER VERTICL SET MOTOR FRONT VERTICL SET MOTOR J J NOTE: THIS PGE IS FOR REFERENCE ONLY NOTE: CONN# ON SET SIDE = SETS (DRIVER & PSSER) CK EU Panel Set: 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 2:19:26 pm ORGNIZTION k33140a 010 PROD schematic sheet1 361 $IVEDWORK/k33140a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Wednesday, July 31, 2002 Panel Set: K33140a_010_0

298 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-202 J1- J2- J2- N3 PSSER SET SET PWR SHORTING RS Passenger Seat pass_seat_lux 002 FN UPC LUMR / OLSTER SW 8-WY SET SW SET SIR SHORTING RS LUMR FT LUMR FWD OLSTER OUT OLSTER IN GND PWR PWR GND FWD FT FRT UP FRT DN RR UP RR DN REC UP REC DN PE F E G C D C H G K J F E M M M M M M HORIZONTL LUMR MOTOR TORSO OLSTER MOTOR HORIZONTL SET MOTOR FRONT VERTICL SET MOTOR RER VERTICL SET MOTOR RECLINE SET MOTOR LDDER/ PRESSURE SENSOR SM SET ELT TENSION SENSOR SET POSITION SENSOR SET ELT SW SET CUSHION HETER SET CK HETER SET CK HET SENSOR PSIR ENLE PSIR DISLE PS SIGNL C 6 15 PS VREF PS RTN OS MODULE C 4 TS SIGNL TS RTN TS VREF OS MODULE aos_module UPC FN DSPS PWR RTN SW FEED SET GND PSS CUSHION RTN PSS HET SUPPLY PSS CK RTN PSS HET SENS PSS HET SENS RTN PSIR DIS STTUS DISPLY ON 1 PSIR OS EN ON GND STTUS DISPLY OFF SERIL DT PWR CLEN OS GND OS OFF OS DT OS PWR RC J J J J1-F J1-J J1-E J1-S J1- J1-H J1-C J1-G J1-R J3- J3- J1-L J1-P J1-M J1-K J1-N NOTE: THIS PGE IS FOR REFERENCE ONLY NOTE: J1 ON SET SIDE = J3 ON SET SIDE = SETS (DRIVER & PSSER) CK EU 03 X Panel Set: 8 schematic sheet1 361 $IVEDWORK/k33140a 010 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:19:26 pm ORGNIZTION k33140a 010 PROD 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Wednesday, July 31, 2002 Panel Set: 8 K33140a_010_08

299 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-203 J2- J2- J1- G2 DRIVER SET SHORTING RS SHORTING RS SET POSITION SENSOR SET SIR SET PWR PWR SET ELT SW GND FWD FT M FRT UP FRT DN M RR UP RR DN M 6-WY SET SW Driver Seat drv_seat_pwr 002 FN UPC HORIZONTL SET MOTOR FRONT VERTICL SET MOTOR RER VERTICL SET MOTOR DSPS PWR RTN SW FEED SET GND J J J1-F J1-J J1-E J1-S NOTE: THIS PGE IS FOR REFERENCE ONLY NOTE: CONN# ON SET SIDE = SETS (DRIVER & PSSER) CK EU Panel Set: 9 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 2:19:26 pm ORGNIZTION k33140a 010 PROD schematic sheet1 361 $IVEDWORK/k33140a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Wednesday, July 31, 2002 Panel Set: 9 K33140a_010_09

300 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Seats (Driver and Passenger) PGE D-204 J2- J2- J1- G2 PSSER SET SHORTING RS SHORTING RS SET SIR SET PWR PWR GND FWD FT M HORIZONTL SET MOTOR FRT UP FRT DN M FRONT VERTICL SET MOTOR RR UP RR DN M RER VERTICL SET MOTOR 6-WY SET SW Passenger Seat pass_seat_pwr 002 FN UPC LDDER/ PRESSURE SENSOR SM SET ELT TENSION SENSOR C 6 15 C SET POSITION SENSOR SET ELT SW PS SIGNL PS VREF PS RTN TS SIGNL OS MODULE TS RTN TS VREF OS MODULE aos_module UPC FN DSPS PWR RTN SW FEED SET GND STTUS DISPLY ON GND STTUS DISPLY OFF SERIL DT PWR OS ON CLEN OS GND OS OFF OS DT OS PWR RC J J J1-F J1-J J1-E J1-S J1-L J1-P J1-M J1-K J1-N NOTE: THIS PGE IS FOR REFERENCE ONLY NOTE: CONN# ON SET SIDE = SETS (DRIVER & PSSER) CK EU 03 X Panel Set: 10 schematic sheet1 361 OJECT ID REVISION STGE VERSION LST CHNGED Y 2:19:26 pm ORGNIZTION k33140a $IVEDWORK/k33140a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ PROD 1 CKMC03 Wednesday, July 31, 2002 Panel Set: 10 K33140a_010_10

301 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Mobile Radio PGE D-205 STRTING ND CHRGING Primary attery Page 8-30/ -2/2 Mbec 4540 Page 8-10/ -18/15 10 Ring Term - Meg Fuse 125 Page 8-10/ -2/1 125 SEORLY_GND 243 SEORLY_PWR MORDIO_PWR. LK 5.0 TXL 19 CSRYJPR F M/P 480 CSRYJPR RKCLTCH 2M M/P LK 5.0 TWP 19 RKCLTCH F M/P 630 RKCLTCH FUSELKJPR 4M M/P C C F M/P 630 RKCLTCH FUSELKJPR 4M M/P Loop nchor 2. RED 5.0 TXL 19 CSRYJPR F M/P 480 CSRYJPR RKCLTCH 2M M/P RED 5.0 TWP 19 RKCLTCH F M/P 630 D RKCLTCH FUSELKJPR D 4M M/P RED 5.0 TWP 19 FUSELKJPR SC002. LK 5.0 TWP FUSELKJPR YEL 0.5 TWP FUSELKJPR 243. YEL 0.5 TWP FUSELKJPR C lunt Cut RED YEL lunt Cut TWP 19 TWP PNK FUSELKJPR FUSELKJPR PNK 3.0 TWP TWP FUSELKJPR FUSELKJPR 1 L243 D9 C RED 5.0 TWP 19 FUSELKJPR Relay Fuse Center seo_radio 001 UPC FN Minifuse Minifuse Relay sm-spst UPC FN Minifuse Relay sm-spst UPC FN Minifuse C9 C8. LK 3.0 TWP FUSELKJPR 19 lunt Cut 9 8. LK 3.0 TWP 19 FUSELKJPR lunt Cut 3 C ORN 3.0 TWP FUSELKJPR ORN 3.0 TWP FUSELKJPR S840 lunt Cut 19 D8 C 40. ORN 3.0 TWP FUSELKJPR ORN 3.0 TWP FUSELKJPR S40 lunt Cut LK 3.0 TWP 19 FUSELKJPR S0. LK 3.0 TWP FUSELKJPR ORN 3.0 TWP 19. LK FUSELKJPR 0.5 TWP. FUSELKJPR LK 0.5 TWP FUSELKJPR Loop nchor. LK 0.5 TWP FUSELKJPR 40. ORN 3.0 TWP FUSELKJPR 19 L MOILE RDIO CK EU Panel Set: 1 03 X &9L4 schematic sheet1 2 OJECT ID k33155a $IVEDWORK/k33155a 002 REVISION VERSION LST CHNGED Y 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/ STGE PROD 1 Thursday, January 3, :00:2 pm ORGNIZTION CKMC03 Panel Set: 1 K33155a_002_01

302 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Truck ody Computer 2.2 (TC): ase (w/o DDM/PDM) PGE D-206 J2-12 J5-D J1-F J1-C J2-6 J3-6 J J J J J J4-5 J J TC_VT1 TC_VT2 TC_VT2 TC_VT2C TC_GND1 TC_GND2 TC_IGN0 TC_IGN1 TC_CCY TC_KEYIN TC_UNLKSW1 TC_LKSW1 LFDR_JR RFDR_JR VTT1 VTT2 VTT2 VTT2C GND1 GND2 TC (GND) VMON (/D) UNLOCK IGN0 (WUR) RUN/CRNK (DI) CCY (WUR) KEYIN (WUFR) UNLK SW (WUF) LOCK SW (WUF) LFDOOR (WUFR) TC 2.2 (SE) RFDOOR(WUFR) HORN (LSD) ULMP (HSD) FINDV (WUF) CTSY (HSD) RDEFOG/CUNLK (LSD) DRVR DR UNLK (LSD) SPLS01 (LSD) SPLS02 (LSD) SPLS03 (LSD) SPLS04 (LSD) DR UNLK RLY (LSD) DR LOCK RLY (LSD) INDV(HSD) 28 TC_HORN TC_ULP TC_INDV TC_CTSYLP TC_RDFOG DRV_UNLOCK DRUNLK_RLY DRLOCK_RLY J2-9 J5-F J1-D J5-E J2-8 J2- J2-9 J2-10 J3-3 J3-2 J2-3 J2-6 TC 2.2 SE (W/O DDM/PDM) CK EU Panel Set: 1 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 9:06:54 am ORGNIZTION k33251a 004 ET2 schematic sheet1 84 $IVEDWORK/k33251a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMC03 Wednesday, pril 25, 2001 Panel Set: 1 K33251a_004_01

303 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Truck ody Computer 2.2 (TC): ase (w/o DDM/PDM) PGE D-20 J J6-1 J J J J J J4-12 J J J LRDR_JR TC_CJR RRDR_JR TC_SWP TC_CLPSW DRL_DFT TC_PRKLP TC_HDLP TC_FFOGSW TC_RFOGSW 328 J3-11 TC_INTLMPD IGN1 SWP (HSD) DISLE FSWP (/D) LR/RDOOR (WUFR) CJR (WUFR) RRDOOR(WUFR) CLMPTT (WUF) HLDIS (DI) PL REQ (WUF) HLREQ (DI) LSD TC 2.2 (SE) IGN1 DISLE SPI2 (/D) LSD FFGLMP (DI) RFGLMP (DI) INTLMPD (DI) PRK (LSD) LOW (LSD) 1080 PRKLP_RLY J TC_LOWM J2-4 TC 2.2 SE (W/O DDM/PDM) CK EU 03 X Panel Set: 2 schematic sheet1 84 OJECT ID REVISION STGE VERSION LST CHNGED Y 9:06:54 am k33251a $IVEDWORK/k33251a ET2 1 Wednesday, pril 25, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 2 K33251a_004_02

304 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Truck ody Computer 2.2 (TC): ase (w/o DDM/PDM) PGE D-208 J J4-9 J4-6 J J J J J J J4-28 J J4- TC_CTSYSW TC_POTRTN TC_DIMPOT TC_POTREF TC_FTP TC_HIMSEL TOWHLL_SW TC_USW PRK_RKSW TC_MLT TC_SNSRTN SP5VREF POTRTN 5V REF SNSRTN CLON (WUF) DIM POT (/D) POT REF FTP (WUF) HEMSEL (DI) TRNS (DI) CKUP (DI) PRKR (DI) LIGHT (/D) FPOTREF (/D) TC 2.2 (SE) HIGH EM (LSD) DRL (LSD) FFOG/HZD (LSD) RFOG/INT CTG (LSD) HLON (LSD) CKDIM1 (HSD) CKDIM2 (HSD) CONTDIM1 (HSD) RP (HSD) 1969 TC_HIM TC_DRLRLY TC_FFOGLP TC_DRLOFF TC_HDLPON TC_KLT1 TC_KLT2 TC_CTLDIM J2-1 J2-4 J2-5 J2-5 J2-8 J1-E J1- J TC_SNRF J2-3 TC 2.2 SE (W/O DDM/PDM) CK EU 03 X Panel Set: 3 schematic sheet1 84 OJECT ID REVISION STGE VERSION LST CHNGED Y 9:06:54 am k33251a $IVEDWORK/k33251a ET2 1 Wednesday, pril 25, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 3 K33251a_004_03

305 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Truck ody Computer 2.2 (TC): ase (w/o DDM/PDM) PGE D J2-11 J J J3- J3-12 J J3-1 J3-10 PSS_LKPWR PSS_LKDT PSS_LKRTN PLPWR PLRTN FPLPWR PLDT (/D) TC_HDWHL HDWHL (/D) ISGND (LSD) FISGND TC_CL2 CLSS2-1 (WUR) TC_ CLSS2-2 (WUR) FRONT WER CTIVE Truck ody Controller tbc_base_mdl 003 UPC FN TC 2.2 (SE) J J J J J J TC 2.2 SE (W/O DDM/PDM) CK EU 03 X Panel Set: 4 schematic sheet1 84 OJECT ID REVISION STGE VERSION LST CHNGED Y 9:06:54 am k33251a $IVEDWORK/k33251a ET2 1 Wednesday, pril 25, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMC03 Panel Set: 4 K33251a_004_04

306 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Truck ody Computer 2.2 (TC): Uplevel (w/ DDM/PDM) PGE D J2-12 TC_VT J5-D TC_VT J1-F TC_VT J1-C TC_VT2C J TC_GND1 J3-6 TC_GND2 530 J4-3 TC_IGN0 39 J4-4 TC_IGN1 43 J4-3 TC_CCY 80 J4-1 TC_KEYIN J6-2 J J6-1 TC_RP VTT1 VTT2 VTT2 VTT2C GND1 GND2 TC (GND) VMON (/D) UNLOCK IGN0 (WUR) RUN/CRNK (DI) CCY (WUR) TC 2.2 (UPLEVEL) KEYIN (WUFR) UNLKSWR (WUF) LOCKSWR (WUF) RPCK (DI) HORN (LSD) ULMP(HSD) FINDV (WUF) CTSY (HSD) RDEFOG/CUNLK (LSD) SPLSO2 (LSD) SPLSO3 (LSD) SPLSO4 (LSD) PSOUND (LSD) RER DOOR UNLK RLY (LSD) RER DOOR LK RLY (LSD) INDV (HSD) 28 TC_HORN J TC_ULP J5-F 132 TC_INDV J1-D 690 TC_CTSYLP J5-E TC_RDFOG RRDR_UNLKRLY J2-8 J J3-3 J3-2 J2-10 J2-3 RRDR_LKRLY J2-6 OJECT ID REVISION STGE VERSION LST CHNGED Y :53:31 am ORGNIZTION TC 2.2 UPLEVEL (W/ DDM/PDM) CK EU 03 X k33251b 004 ET2 1 CKMC03 Panel Set: 1 schematic sheet1 114 $IVEDWORK/k33251b 004 Friday, March 8, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33251b_004_01

307 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Truck ody Computer 2.2 (TC): Uplevel (w/ DDM/PDM) PGE D J J6-1 4 J J J J J J J4-12 J J J J3-11 TC_SWC TC_CJR LRDR_JR RRDR_JR TC_SWP TC_CLPSW DRL_DFT TC_PRKLP TC_HDLP TC_FFOGSW TC_RFOGSW TC_INTLMPD J3-12 SWC (/D) IGN1 IGN1 SWP (HSD) DISLE DISLE FSWP (/D) CJR (WUFR) LR/RDOOR (WUFR) RRDOOR(WUFR) CLMPTT (WUFR) HLDIS (DI) PL REQ (WUF) HLREQ (DI) SPI2 (/D) FFGLMP (DI) LSD LSD TC 2.2 (UPLEVEL) RFGLMP (DI) INTLMPD (DI) RRWIN (/D) RRPWR (HSD) LRPWR (HSD) LRUP (LSD) LRDWN (LSD) RRUP (LSD) RRDWN (LSD) PRK (LSD) LOW (LSD) INCLINTION SENSOR TC_RRWDO TC_LRWDO LRWDO_UP LRWDO_DWN RRWDO_UP RRWDO_DWN J6-6 J6-5 J6-8 J6- J6- J PRKLP_RLY J TC_LOWM J2-4 J4-11 TC 2.2 UPLEVEL (W/ DDM/PDM) CK EU 03 X Panel Set: 2 schematic sheet1 114 OJECT ID REVISION k33251b 004 $IVEDWORK/k33251b 004 STGE VERSION LST CHNGED Y ET2 1 Friday, March 8, 2002 :53:31 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33251b_004_02

308 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Truck ody Computer 2.2 (TC): Uplevel (w/ DDM/PDM) PGE D-212 J J J J J J J J J J4-28 J J4- TC_CTSYSW TC_POTRTN TC_DIMPOT TC_POTREF TC_FTP TC_HIMSEL TOWHLL_SW TC_USW PRK_RKSW TC_MLT TC_SNSRTN SP5VREF POTRTN SNSRTN CLON (WUF) DIMPOT (/D) POTREF FTP (WUF) HEMSEL (DI) TRNS (DI) CKUP (DI) PRKR (DI) LIGHT (DI) FPOTREF (/D) TC 2.2 (UPLEVEL) HIGH (LSD) DRL (LSD) FFOG/HZD (LSD) RFOG/INT LTG (LSD) HLON (LSD) CKDIM1 (HSD) CKDIM2 (HSD) CONTDIM1 (HSD) RP (HSD) 1969 TC_HIM J TC_DRLRLY J TC_FFOGLP J TC_DRLOFF J TC_HDLPON J TC_KLT1 J1-E 2353 TC_KLT2 J TC_CTLDIM J TC_SNRF J2-3 TC 2.2 UPLEVEL (W/ DDM/PDM) CK EU 03 X Panel Set: 3 schematic sheet1 114 OJECT ID REVISION k33251b 004 $IVEDWORK/k33251b 004 STGE VERSION LST CHNGED Y ET2 1 Friday, March 8, 2002 :53:31 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33251b_004_03

309 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Truck ody Computer 2.2 (TC): Uplevel (w/ DDM/PDM) PGE D-213 J4-8 HDOPEN (WUF) 590 J J J J J J3- J3-12 J4-2 J J J3-1 J3-10 LTSOLSENS LSOLR (/D) RTSOLSENS RSOLR (/D) PSS_LKPWR PLPWR FPLPWR PSS_LKDT PLDT (/D) PLRTN PSS_LKRTN TC_HDWHL HDWHL (/D) ISGND (LSD) FISGND INTRUDE (WUFR) ISDIS (DI) TC_CL2 CLSS2-1 (WUR) TC_ CLSS2-1 (WUR) FRONT WER CTIVE Truck ody Controller tbc_uplvl_mdl 002 UPC FN TC 2.2 (UPLEVEL) J J J J J J TC 2.2 UPLEVEL (W/ DDM/PDM) CK EU 03 X Panel Set: 4 schematic sheet1 114 OJECT ID REVISION STGE VERSION LST CHNGED Y k33251b 004 ET2 1 $IVEDWORK/k33251b 004 Friday, March 8, 2002 :53:31 am ORGNIZTION CKMC03 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33251b_004_04

310 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Driver Door Module PGE D J2-14 DDM_T J1-2 DDM_T2 10 J1-4 DDM_GND 2114 J2-11 DDM_LPTRN 45 J2-18 DRV_DRJR 262 J2-15 DRKEY_UNLK 1183 J2-3 LFJR_RTN J J2-22 DDM_CL2 VTT1 15 VTT2 25 GND MIRSIG1 DDM JR KEYUNLK DRTN2 (GND) CLSS 2 REDUNDNT (WUR) CLSS 2 EP FWD (HSD) EP RLY (LSD) EP RLY (LSD) EP FT (HSD) W/CFDK (HSD/LSD) WINUP W/CFDK (HSD/LSD) WINDN (HSD/LSD) LOCK (HSD/LSD) UNLOCK CTILLUM CTRET MIRSIG2 SIGRTN (GND) MIRROR HETER MIRROR MIRROR MIRROR MIRROR HETER RETRCT EXTEND DOWN UP/LEFT RETURN (HSD/LSD) (HSD/LSD) (HSD/LSD) (HSD/LSD) MIRROR RIGHT 5V DC REF VERTICL HORIZONTL POS DT (HSD/LSD) POS DT (HSD/LSD) 5V DC RTN 5130 EP_FWD EP_RTN1 EP_RTN2 J J J EP_FT J LFWDO_UP J LFWDO_DWN J DRV_DRLK J DRV_DRUNLK J DDM_LHCTSY J LHCTSY_RTN J2-4 NOTE: THIS CONTENT INTERNL TO DOOR NO "VEHICLE HRNESS" CONNECTION DRIVER DOOR MODULE CK EU Panel Set: 1 of 3 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 9:34:4 am ORGNIZTION k33254a 00 PROD schematic sheet1 106 $IVEDWORK/k33254a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMCE Thursday, November 14, 2002 Panel Set: 1 K33254a_00_01

311 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Driver Door Module PGE D-215 MEMORY / HETED SET / EP SW RPO = N3/N3+ EXIT MEM 2 MEM 1 FULL CUSHION COOL(N3+) LOW(N3) LOW(N3+) MED(N3) HIGH CK ONLY CK EP FT EP FWD ILLUM 536 J2-2 J2-10 J DRKEY_RTN ELECT_REF ELECT_RTN DRTN1 (GND) ECREF1 ECRTN1 MEM2 (WUR&F) MEM1 (WUR&F) HET LEVEL (DI) LOW HET (PWM) MEDIUM HET (PWM) HIGH HET (PWM) CK/CUSH OR CK SELECT (DI) CK/CUSH INDICTOR (PWM) EP FT EP FWD ILLUM MEM/HETED SET PWR NOTE: THIS CONTENT INTERNL TO DOOR NO "VEHICLE HRNESS" CONNECTION ECREF2 ECRTN2 PUDDLE RTN PUDDLE DDM NOTE: THIS CONTENT INTERNL TO DOOR NO "VEHICLE HRNESS" CONNECTION DRIVER DOOR MODULE CK EU 03 X Panel Set: 2 of 3 schematic sheet1 OJECT ID REVISION STGE VERSION LST CHNGED Y 9:34:4 am k33254a 106 $IVEDWORK/k33254a PROD 1 Thursday, November 14, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 2 K33254a_00_02

312 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Driver Door Module PGE D-216 DRIVER WINDOW SWITCH DRIVER MIRROR SWITCH SWITCH CKLIGHT SWITCH POWER EXPRESS DOWN DRIVER DOWN WINDOW UP EXPRESS UP (Z5) EXPRESS DOWN PSSER WINDOW DOWN UP EXPRESS UP (Z5) EXPRESS DN (Z5) LEFT RER WINDOW DOWN UP EXPRESS DN (Z5) RIGHT RER WINDOW DOWN UP WINDOW LOCKKOUT WINDOW LOCKOUT INDICTOR SWITCH CK LIGHT LEFT MIRROR SELECT RIGHT MIRROR DOWN POSITION UP LEFT MIRROR POSITION RIGHT DOOR LOCK DOOR UNLOCK SWITCH DOOR LOCK FOLD OR CMPER EXTEND EXTEND FND RETRCT Driver Door Module drv_dr_mdl 00 UPC FN DDM J J J J J5-TD NOTE: NO VEHICLE HRNESS J3=MP# J4=MP# J5=MP# DRIVER DOOR MODULE CK EU Panel Set: 3 of 3 03 X schematic sheet1 OJECT ID REVISION k33254a $IVEDWORK/k33254a 00 VERSION 2003 & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 STGE PROD LST CHNGED Y 9:34:4 am ORGNIZTION 1 CKMCE Thursday, November 14, 2002 Panel Set: 3 K33254a_00_03

313 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Passenger Door Module PGE D-21 HETED SET SWITCH DOOR LOCK SWITCH PSSER DOOR UNLOCK WINDOW SWITCH CKLIGHT SWITCH POWER HET LEVEL HIGH LOW(N3+) MED(N3) COOL(N3+) LOW(N3) DOOR LOCK CK SELECT CK/CUSH OR ILLUM CK 4240 J2-14 PDM_T J J1-3 PDM_T2 PDM_GND EXPRESS DOWN DOWN UP EXPRESS UP (CD) 2115 J2-26 PDM_LPTRN VTT1 15 VTT2 25 GND HETED SET POWER HET LEVEL (DI) HIGH HET (PWM) MEDIUM HET (PWM) LOW HET (PWM) CK/CUSH OR CK SELECT (DI) ILLUM CK/CUSH INDICTOR (PWM) MIRSIG1 PDM W/CFDK (HSD/LSD) WINUP W/CFDK (HSD/LSD) WINDN (HSD/LSD) LOCK (HSD/LSD) UNLOCK CTILLUM CTIRET MIRSIG2 SIGRTN (GND) MIRROR HETER HETER RETURN MIRROR RETRCT (HSD/LSD) 666 RFWDO_UP RFWDO_DWN PSS_DRLK PSS_DRUNLK J1-4 J1-1 J2-10 J PDM_RHCTSY J RHCTSY_RTN J2-19 NOTE: THIS CONTENT INTERNL TO DOOR NO "VEHICLE HRNESS" CONNECTION PSSER DOOR MODULE CK EU Panel Set: 1 of 3 03 X OJECT ID REVISION STGE VERSION LST CHNGED Y 9:36:32 am ORGNIZTION k33253a 005 PROD schematic sheet1 83 $IVEDWORK/k33253a & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 1 CKMCE Thursday, November 14, 2002 Panel Set: 1 K33253a_005_01

314 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Passenger Door Module PGE D-218 EC REF1 EC RTN1 PDM PUDDLE PUDDLE RTN EC EC REF1 RTN1 NOTE: THIS CONTENT INTERNL TO DOOR NO "VEHICLE HRNESS" CONNECTION PSSER DOOR MODULE CK EU 03 X Panel Set: 2 of 3 schematic sheet1 83 OJECT ID REVISION STGE VERSION LST CHNGED Y 9:36:32 am ORGNIZTION k33253a 005 PROD 1 CKMCE $IVEDWORK/k33253a 005 Thursday, November 14, 2002 Panel Set: & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 K33253a_005_02

315 2003 & EYOND LIGHT DUTY C/K FULL-SIZE TRUCK ELECTRICL Passenger Door Module PGE D DOOR JR J J J2-6 PSS_DRJR KEY UNLK PSSKEY_UNLK DRTNR2 (GND) PSSKEY_RTN 118 DRTN1 (GND) J J2-22 RFJR_RTN PDM CLSS 2 PDM_CL2 J2-9 CLSS 2 REDUNDNT (WUR) Passenger Door Module pass_dr_mdl 005 FN UPC MIRROR EXTEND (HSD/LSD) MIRROR DOWN (HSD/LSD) J MIRROR VERTICL HORIZONTL J UP/LEFT MIRROR 5V DC POS DT POS DT 5V DC J (HSD/LSD) RIGHT REF (HSD/LSD) (HSD/LSD) RTN J J5-TD NOTE: THIS CONTENT INTERNL TO DOOR NO "VEHICLE HRNESS" CONNECTION NOTE: NO VEHICLE HRNESS J3=MP# J4=MP# J5=MP# PSSER DOOR MODULE CK EU 03 X Panel Set: 3 of 3 schematic sheet1 83 $IVEDWORK/k33253a 005 OJECT ID REVISION STGE VERSION LST CHNGED Y 9:36:32 am k33253a 005 PROD 1 Thursday, November 14, & eyond Light Duty C/K Full-Size Truck Electrical Revised 3/04 ORGNIZTION CKMCE Panel Set: 3 K33253a_005_03