GMC Sierra 3500 HD (2007-2012) blk Wiring diagrams

4 SPEED 6 SPEED A/T A/T 6.0L (VIN 5) AUTOMATIC A/C AUTOMATIC TRANSMISSION AUXILIARY BATTERY AUXILIARY BATTERY RELAY (IF EQUIPPED) (REAR OF ENGINE COMPT) BLK WIRE BODY BUILDER EMERGENCY LAMP DK GRN WIRE ECM- TCM-BATT HDLP BATT WASH FUSE 14 FUSE 12 FUSE 22 ELECTRONIC, ACTIVE 2 SPEED ACTIVE 2 SPEED 6.0L (VIN K) EMERGENCY LAMP PROVISIONS EMERGENCY VEHICLE PROVISION (BLUNT CUT) EXCEPT 6.0L (VIN 5) FUSE FUSE FUSE FUSE HOLDER (RIGHT SIDE FUSIBLE LINK 1 (14 GA- FUSIBLE LINK 2 (14 GA- FUSIBLE LINK 3 GENERATOR HVAC BATT FUSE 39 I/P 1 ACCESSORY POWER OUTLET DATA LINK CONNECTOR (DLC) INSTRUMENT BODY CONTROL PANEL MODULE CLUSTER (IPC) (BCM) IPC FUSE 46 ITBC FUSE 6 TREC FUSE 67 FUSE 37 LEFT BATTERY LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE LTR STUD 2 FUSE 53 FUSE 63 MANUAL A/C MEGA FUSE MEGA FUSE (RIGHT REAR OF ENGINE COMPT) MEGA MEGA OF FIREWALL) FUSE FUSE MOBILE RADIO FUSE BLOCK FUSE (BEHIND RIGHT SIDE OF DASH) MODULE NCA WIRE ORG/ WIRE POWER SUPPLY POWER SUPPLY, AUXILIARY BATTERY RED WIRE RED/ WHT WIRE RED/BLK WIRE RED/WHT WIRE RELAY RELAY A RELAY B RIGHT BATTERY RIGHT I/P J/B (IN RIGHT END OF DASH) RUN WIRE STARTER MOTOR TO AUXILIARY FUSE BLOCK (DIAGRAM 7 OF 7) TO LEFT I/P J/B (DIAGRAM 4 OF 7) TO ROOF BEACON SWITCH (DIAGRAM 2 OF 7) TO STUD 1 FUSE 68 (DIAGRAM 2 OF 7) TO UNDERHOOD FUSE BLOCK (DIAGRAM 2 OF 7) TO UNDERHOOD FUSE BLOCK (DIAGRAM 3 OF 7) TO UNDERHOOD FUSE BLOCK (DIAGRAM 6 OF 7) TRAILER PROVISION (BLUNT CUT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ AUXILIARY BATTERY W/ EMERGENCY VEHICLE ROOF LAMP RELAY W/ WRECKER W/ WRECKER RELAY (4.3L) (TOP LEFT REAR OF ENGINE) WHT RED/ WIRE WHT WIRE WRECKER RELAY WSW/HTR FUSE 66 YEL WIRE

6.0L (VIN 5) ABS-1 FUSE 61 ABS-2 FUSE 9 BLK RED/ WIRE BLK WIRE BLOWER MOTOR CONTROL MODULE BODY CONTROL MODUE (BCM) COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE COOLED DIM BCM FUSE FUSE SEATS FUSE 24 DRIVER DRIVER DOOR LOCK/ WINDOW SWITCH WINDOW SWITCH DRIVER POWER SEAT ADJUSTER DRIVER SEAT 2 CIRCUIT ELEC RUN BOARD FUSE 65 ELECTRONIC BRAKE CONTROL MODULE (EBCM) EXCEPT 4.3L, 6.0L(VIN K) FROM FUSIBLE LINK 3 (DIAGRAM 1 OF 7) FROM IPC FUSE 46 (DIAGRAM 1 OF 7) FSCM FUSE 21 FUEL PUMP FLOW CONTROL MODULE HEAVY DUTY ABS FUSE 59 HVAC BLWR FUSE 70 LBEC 1 FUSE 64 LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT DR CIRCUIT BREAKER OBS DET FUSE 20 REAR SEAT FUSE 1 LT GRN WIRE MBEC 1 FUSE 69 MEMORY SEAT MODULE (MSM) ORG/ WIRE PASS SEAT 1 CIRCUIT PASSENGER PASSENGER SEAT SEAT LUMBAR ADJUSTER SWITCH SWITCH PASSENGER POWER SEAT ADJUSTER PASSENGER RIGHT DOOR LOCK/ REAR WINDOW WINDOW SWITCH SWITCH PASSENGER WINDOW SWITCH PWR REAR WNDW CIRCUIT REAR DSM DDM PWR REAR WPR FUSE 23 FUSE 4 HVAC FUSE MIR FUSE FUSE RED WIRE RED/ BLK WIRE RED/BLK WIRE RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) RIGHT I/P J/B (IN RIGHT END OF DASH) ROOF BEACON RELAY (IN OVERHEAD CONSOLE) ROOF BEACON SWITCH ROOF MOUNTED BEACON PROVISION (BLUNT CUT) RT DOORS CIRCUIT RT STOP CTSY FUSE TRN FUSE 8 S/ROOF FUSE 34 SEAT CLIMATE CONTROL MODULE (IF EQUIPPED) STUD 1 FUSE 68 (AUXILIARY BATTERY) SUNROOF MODULE TO LGM FUSE 71 (DIAGRAM 3 OF 7) TO PDM FUSE (DIAGRAM 3 OF 7) TO PDM FUSE 9 (DIAGRAM 3 OF 7) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ ACTIVE BRAKE W/O ACTIVE BRAKE 6.0L(VIN 5) W/ ACTIVE, VACUUM BRAKE W/ INDIVIDUAL FRONT SEAT W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ REAR POWER WINDOW W/ ROOF BEACON RELAY W/ SUNROOF W/ WRECKER W/ ROOF, EMERGENCY BEACON VEHICLE RELAY ROOF LAMP RELAY W/O INDIVIDUAL FRONT SEAT W/O INDIVIDUAL FRONT SEAT, POWER MIRROR W/O INDIVIDUAL W/ INDIVIDUAL FRONT SEAT, FRONT SEAT, POWER MIRROR POWER MIRROR

2 OF 7) PDM FUSE 9 (W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE, LUXURY) 6.0L (VIN 5) AIR BAG BATT FUSE 45 ALC/COMP FUSE 58 AMP FUSE 41 AUTOMATIC A/C AUTOMATIC TRANSMISSION AUXILIARY FLUID PUMP CONTROL MODULE AUX PWR FUSE BLK WIRE BODY CONTROL MODULE (BCM) CENTER CONSOLE ACCESSORY POWER OUTLET CENTER CONSOLE COMPARTMENT ACCESSORY POWER OUTLET (ON LOWER RIGHT "B" PILLAR) CHIME POWER MODULE TAKE OFF (PTO) RELAY COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE OF HVAC MODULE) CREW CAB W/ INDIVIDUAL FRONT SEAT AUX RSE PWR 2 FUSE 19 FUSE 2 ESC/ALC EXH FUSE 2 FROM AUXILIARY BATTERY RUN RELAY (DIAGRAM 1 OF 7) FROM FSCM FUSE 21 (DIAGRAM 2 OF 7) FROM LT DR CIRCUIT BREAKER (DIAGRAM HVAC CONTROL MODULE I/P 2 ACCESSORY POWER OUTLET INFO FUSE 22 LATE PRODUCTION EARLY PRODUCTION LBEC 2 FUSE 72 LEFT I/P J/B (LOWER LEFT SIDE OF DASH) LEFT I/P J/B (LOWER LEFT SIDE OF DASH) W/ INDIVIDUAL FRONT SEAT, POWER MIRROR LGM FUSE 71 LOCK/UNLOCK PCB RELAY LUXURY EDITION MERCHANDISED PACKAGE (ON RIGHT FRONT CORNER MANUAL A/C NCA WIRE ORG/ WIRE POWER LOCKS W/O INDIVIDUAL FRONT SEAT, POWER MIRROR POWER TAKE OFF (BLUNT CUT) PREMIUM AUDIO BRANDED W/ AMPLIFIER SPEAKER SYSTEM PTO FUSE 47 RADIO RDO FUSE 42 REAR SEAT DIGITAL AUDIO (RSA) RADIO CONTROL RECEIVER (IF (IF EQUIPPED) EQUIPPED) RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RIGHT I/P J/B (IN RIGHT END OF DASH) CENTER SEAT ACCESSORY POWER OUTLET STOP IS LPS FUSE 17 LT STOP TRN FUSE 6 LAMPS FUSE TO BODY CONTROL MODULE (DIAGRAM 4 OF 7) TO DLIS FUSE 35 (DIAGRAM 4 OF 7) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNLOCK PCB LOCK PCB RELAY RELAY VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) VIDEO DISPLAY PERFORMANCE ENHANCED AUDIO W/ AUX- ILIARY BATTERY W/ CUSTOM CONSOLE FRONT COMPT FLOOR W/ HEAD CURTAIN AIR BAG W/ LUXURY W/ REAR SEAT ENTERTAIN- MENT PACKAGE W/ UNIVERSAL GARAGE DOOR OPENER W/ W/O LUXURY LUXURY W/ WRECKER, EMERGENCY VEHICLE ROOF LAMP, ROOF BEACON RELAY W/O LUXURY W/O RADIO W/O W/ LUXURY LUXURY W/ONSTAR WHT WIRE WINDSHIELD WASHER SOLVENT HEATER (IF EQUIPPED)

4.3L 4.3L, 6.0L (VIN K) 6.0L PTO (VIN 5) A/C CMPRSR RELAY AIR BAG IGN FUSE 40 AUTOMATIC TRANSMISSION (4 SPEED A/T) AUX HVAC-IGN FUSE 48 BCK/UP LAMP PCB RELAY BLK WIRE BRN WIRE DRIVE MOTOR GENERATOR POWER INVERTER MODULE (6.0L (VIN 5)) ECM-IGN FUSE 56 ELECTRONIC BRAKE CONTROL MODULE (EBCM) ELECTRONIC, ACTIVE 2 SPEED FOG LAMP DRL PCB RELAY RELAY FROM BODY CONTROL MODULE (DIAGRAM 4 OF 7) FROM DLIS FUSE 35 (DIAGRAM 4 OF 7) FRONT DRIVE AXLE ACTUATOR FRT WPR FUSE 36 FUEL PUMP FLOW CONTROL MODULE HDLP LO/HID RELAY HEATED STEERING WHEEL CONTROL MODULE INLINE FUSE HI BEAM PCB RELAY HORN PCB RELAY HVAC-IGN FUSE 55 INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH (IF EQUIPPED) INFLATABLE RESTRAINT PASSENGER AIR BAG ON/OFF INDICATOR (IF EQUIPPED) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL L/GATE FRT WASH PCB RELAY PCB RELAY LEFT AIR ENGINE TEMPERATURE CONTROL ACTUATOR MODULE (ECM) (AUTOMATIC A/C) LEFT I/P J/B (LOWER LEFT SIDE OF DASH) MISC ING FUSE 43 MODE ACTUATOR NCA WIRE PARK LAMP RELAY PNK WIRE PNK/ WHT WIRE PNK/WHT WIRE REAR DEFOG RELAY RECIRCULATION ACTUATOR RED WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RUN/ CRNK RELAY SEAT CLIMATE CONTROL MODULE (IF EQUIPPED) SECONDARY FUEL PUMP (6.0L(VIN K) W/O AUXILIARY (FSCM) FUEL TANK) SEO/ALC FUSE 54 SERIAL DATA GATEWAY (SDG) MODULE STRTR RELAY TO FAN 1 FUSE 57 (DIAGRAM WIPER CONTROL 6 OF 7) PCB RELAY TRANS IGN 1 FUSE 19 TRANSMISSION CONTROL MODULE (TCM) TRLR LT STOP/TURN PCB RELAY TRLR RT STOP/TURN PCB RELAY W/O W/ STEERING STEERING WHEEL WHEEL HEATER HEATER WIPER REAR FUEL CHMSL SPEED WASH PMP PCB PCB PCB RELAY RELAY RELAY RELAY YEL WIRE

1 3 2 6 12-VOLT REF LO SERIAL DATA HI SERIAL DATA GROUND 12 13 12-VOLT REF BRAKE SW SIG PARK BRAKE SW SIG PPL 12-VOLT REF ANGLE SENSOR PHASE B CAN BUS LOW SERIAL DATA 12-VOLT REF LF WHEEL SPD SENS SIG 16 17 COMPUTER DATA BUS + DATA BUS - DATA LINES SYSTEM 2501 2501 COMPUTER DATA LINES SYSTEM 5-VOLT REF VEHICLE SPEED SIGNAL CAN BUS HIGH SERIAL DATA ABS INDICATOR ABS-1 FUSE 61 (GAS) FUSE 56 (DIESEL) BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING INDICATOR BRN WIRE COMPUTER DATA LINES SYSTEM DIESEL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) EXCEPT LUXURY GAS GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES I/P MULTI-FUNCTION SWITCH INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 (DIESEL) FUSE 46 (GAS) LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR WHEEL SPEED SENSOR (WSS) (ON LEFT REAR BRAKE BACKING PLATE) LOGIC LOW REF 12-VOLT REF LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE LUXURY NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PEDAL ASSEMBLY) POWER DISTRIBUTION SYSTEM PPL PPL PPL RED WIRE RED/BLK WIRE RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) RIGHT REAR WHEEL SPEED SENSOR (WSS) (ON RIGHT REAR BRAKE BACKING PLATE) SERIAL DATA SERIAL DATA BATTERY POSITIVE VOLTAGE SERIAL DATA BUS (+) SERIAL DATA BUS (+) BATTERY POSITIVE VOLTAGE SERIAL DATA BUS- SERIAL DATA BUS- GROUND SIG STEERING ANGLE SENSOR (ON STEERING COLUMN) STOP LAMP SWITCH (TOP OF BRAKE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL SWITCH TRACTION CTRL SW SIG VEHICLE SPD SIG RADIO WHT WIRE YAW RATE, LATERAL ACCELERATION SENSOR (UNDER CENTER CONSOLE TRIM PANEL) YEL WIRE YEL/BLK WIRE

12 VOLT REF 12-VOLT REF RF WHEEL SPD SENS SIG GROUND ABS INDICATOR ABS-1 FUSE 61 (GAS) FUSE 56 (DIESEL) BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING INDICATOR COMPUTER DATA LINES SYSTEM DATA BUS - DIESEL DIESEL GAS DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) EXCEPT LUXURY GAS GRY WIRE GRY/WHT WIRE HEAVY DUTY ABS FUSE 59 (GAS) FUSE 55 (DIESEL) HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 43 (DIESEL) FUSE 46 (GAS) LEFT FRONT WHEEL SPEED SENSOR (WSS) (ON LEFT FRONT STEERING KNUCKLE) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LT BLU WIRE LUXURY NCA WIRE NEAR FAN SHROUD) ORG/ WIRE ORG/WHT WIRE PARK BRAKE SW SIG PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) POWER DISTRIBUTION SYSTEM PPL PPL BRAKE SW SIG RED/BLK WIRE RED/WHT WIRE RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) SERIAL DATA SIG TAN WIRE TAN/BLK WIRE VEHICLE SPD SIG VEHICLE SPD SIG RADIO YEL WIRE YEL/BLK WIRE

11 2 LH ST SIG RH ST SIG BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COOLED SEATS FUSE 24 DDM FUSE 4 DK BLU WIRE DK GRN WIRE DRIVER BACK HEATED SEAT ELEMENT (IN DRIVER'S SEAT BACK) DRIVER CUSHION HEATED SEAT ELEMENT (IN DRIVER'S SEAT CUSHION) DRIVER SEAT BACK VENTILATION HEATING, COOLING MODULE DRIVER SEAT CUSHION VENTILATION HEATING, COOLING MODULE GMLAN GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LOGIC LT BLU WIRE LT GRN WIRE MEMORY SEAT MODULE (MSM) (UNDER FRONT OF DRIVER'S SEAT) PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER'S SEAT BACK) PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER'S SEAT CUSHION) PASSENGER SEAT BACK VENTILATION HEATING, COOLING MODULE PASSENGER SEAT CUSHION VENTILATION HEATING, COOLING MODULE PNK PNK PPL WIRE PNK WIRE PPL RED/WHT WIRE TAN WIRE TAN/BLK WIRE WHT WIRE YEL WIRE YEL/BLK WIRE

4 6 BATT POS VOLT GND 6 4 GND BATT POS VOLT BACK IND BCK, CUSH BLK WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOL IND DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER MEMORY/ HEATED, COOLED SEAT SWITCH DRV HEAT COOL CTRL DRV HEAT COOL SW SIG DRV HEAT HI TEMP CTRL DRV HEAT LO TEMP CTRL DRV HEAT MID TEMP CTRL DRV SEAT BACK CTRL DRV ST BCK, CSH CTRL GMLAN SERIAL DATA GROUND DISTRIBUTION SYSTEM GRY WIRE HI IND HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LO IND LOW REFERENCE LT BLU WIRE LT GRN/BLK WIRE MEMORY SW DIM CTRL MID IND ORG/ WIRE PAS HEAT COOL CTRL PAS HEAT COOL SW SIG PAS HEAT HI TEMP CTRL PAS HEAT LO TEMP CTRL PAS HEAT MID TEMP CTRL PAS SEAT BACK CTRL PAS ST BCK, CSH CTRL PASSENGER DOOR LOCK/ WINDOW SWITCH PASSENGER MEMORY/ HEATED, COOLED SEAT SWITCH PDM FUSE 9 PNK LOW REFERENCE WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL DRV SEAT BACK CTRL PPL PAS HEAT BACK CTRL RED WIRE RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) SEAT BACK) SEAT COOL SEAT HEAT TAN WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

17 12 8 11 HDLP OFF HDLP ON PRK LMP AMB LGHT 18 25 HDLP DIM SW SIG FLASH TO PASS 23 11 DRL RLY FOG LMP RLY 2500 2501 COMPUTER DATA LINES SYSTEM 8 9 SERIAL DATA + SERIAL DATA - BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT CHEVROLET DK BLU WIRE DK GRN WIRE DK GRN/WHT (OR ORG) WIRE DK GRN/WHT WIRE DKGRN/ WHT WIRE DRL 2 FUSE 33 FUSE 30 FLASH TO PASS SWITCH FOG LP SW GASOLINE DIESEL GMC GRY WIRE HDLP LO/HID RELAY HEADLAMP DIMMER SWITCH HI BEAM PCB RELAY HI BEAM RLY HI HEAD- LAMP LT FUSE 32 FUSE 29 HI HEAD- LAMP RT FUSE 30 FUSE 21 HOT AT ALL TIMES LEFT FRONT SIDE MARKER LAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LO BEAM RLY LO HDLP LT FUSE 12 LO HDLP RT FUSE 16 FUSE 15 LOWER LEFT PARK/TURN SIGNAL LAMP LOWER RIGHT PARK/TURN SIGNAL LAMP LT BLU WIRE LT GRN/BLK (OR ORG) WIRE LT GRN/BLK WIRE LTGRN/ BLK WIRE ORG/ WIRE PK BRAKE SIG PNK/WHT WIRE POWER DISTRIBUTION SYSTEM RED/BLK WIRE RIGHT FRONT SIDE MARKER LAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP SIDE OF DASH) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TO FOG LAMP RELAY (DIAGRAM 2 OF 2) TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE HOLDER (DIESEL: RIGHT SIDE OF FIREWALL) UPPER LEFT PARK/TURN SIGNAL LAMP UPPER RIGHT PARK/TURN SIGNAL LAMP WHT WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLK/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRL FUSE 31 FUSE 28 DRL PCB RELAY FOG LAMP FUSE 26 FUSE 25 FOG LAMP IND FOG LAMP RELAY FOG LAMP SWITCH FROM HDLP LO/HID RELAY (DIAGRAM 1 OF 2) GASOLINE DIESEL GMLAN SERIAL DATA GROUND DISTRIBUTION HEAD PARK AUTO HEADLAMP, PANEL DIMMER SWITCH HI-BEAM IND INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 FUSE 43 LEFT FRONT FOG LAMP (IF EQUIPPED) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LT BLU WIRE LT GRN/BLK WIRE MANUAL A/C AUTOMATIC A/C OFF OFF HEAD ORG/ WIRE PARK AUTO PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) POWER DISTRIBUTION SYSTEM PPL RED/WHT WIRE RIGHT FRONT FOG LAMP SYSTEM UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE