GMC Cab & Chassis Sierra 3500 HD (2008-2012) blk Wiring diagrams

4 SPEED 6 SPEED A/T A/T 6.0L (VIN K), 6.0L (VIN G) 7 OF 7) AUTOMATIC A/C AUTOMATIC TRANSMISSION AUXILIARY BATTERY RELAY (IF EQUIPPED) (REAR OF ENGINE COMPT) AUXILIARY BATTERY RIGHT I/P J/B (IN RIGHT END OF DASH) RELAY BLK WIRE BODY BUILDER EMERGENCY LAMP CYLINDER HEAD) MOBILE RADIO PROVISION (BLUNT CUT) DK GRN WIRE ECM- TCM-BATT BATT FUSE 14 FUSE 12 EMERGENCY LAMP PROVISIONS EMERGENCY VEHICLE PROVISION (BLUNT CUT) EVAPORATIVE HVAC EMISSION (EVAP) CONTROL CANISTER VENT MODULE SOLENOID VALVE EXCEPT 6.0L (VIN J) FUSE FUSE FUSE FUSE SUPPLY) (BEHIND RIGHT SIDE OF DASH) FUSIBLE LINK 1 (14 GA- FUSIBLE LINK 2 (14 GA- FUSIBLE LINK 3 GENERATOR HDLP WASH FUSE 22 HEATED SEAT CONTROL MODULE (IF EQUIPPED) 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 MOBILE RADIO FUSE BLOCK MODULE ORG/ WIRE POWER SUPPLY POWER SUPPLY, AUXILIARY BATTERY RED WIRE RED/ WHT WIRE RED/BLK WIRE RED/WHT WIRE RELAY A RELAY B RIGHT BATTERY RUN WIRE STARTER MOTOR TO AUXILIARY FUSE BLOCK (DIAGRAM TO AUXILIARY FUSE BLOCK (DIAGRAM 7 OF 7) TO LEFT I/P J/B (DIAGRAM 4 OF 7) TO STUD 1 FUSE 68 (DIAGRAM 2 OF 7) TO UNDERHOOD FUSE BLOCK (DIAGRAM 6 OF 7) TO UNDERHOOD FUSE BLOCK TO ROOF (DIAGRAM BEACON SWITCH 3 OF 7) (DIAGRAM 2 OF 7) TRAILER BRAKE CONTROL RELAY (IF EQUIPPED) TRAILER PROVISION (BLUNT CUT) TRANSMISSION ENGINE CONTROL CONTROL MODULE MODULE (TCM) (ECM) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE HOLDER (ON POSITIVE BATTERY TERMINAL) W/ ACTIVE 2 SPEED W/ AUXILIARY BATTERY W/ AUXILIARY BATTERY TO UNDERHOOD FUSE BLOCK (DIAGRAM 2 OF 7) W/ DUAL BATTERY W/ ELECTRONIC 2 SPEED, ACTIVE 2 SPEED 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

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 CREW EXTENDED CAB CAB, POWER WINDOW CREW EXTENDED CAB, CAB POWER WINDOW (W/ INDIVIDUAL FRONT SEAT) DIM BCM FUSE FUSE SEATS FUSE 24 DRIVER DRIVER DOOR LOCK/ WINDOW SWITCH WINDOW SWITCH DRIVER SEAT 2 CIRCUIT ELEC RUN BOARD FUSE 65 ELECTRONIC BRAKE CONTROL MODULE (EBCM) EXCEPT 4.3L/ 6.0L (VIN G) 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 FUEL PUMP/ TRAILER BRAKE 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 REAR WPR FUSE 23 OBS DET FUSE 20 REAR SEAT FUSE 1 MIR FUSE LT GRN WIRE MBEC 1 FUSE 69 MEMORY DRIVER DOOR LOCK/ SEAT MODULE WINDOW (MSM) SWITCH MEMORY SEAT MODULE (MSM) PASS SEAT 1 CIRCUIT PASSENGER WINDOW SWITCH PWR REAR WNDW CIRCUIT REAR DSM DDM PWR FUSE 4 HVAC 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 LEFT I/P J/B (LOWER LEFT SIDE OF DASH) S/ROOF FUSE 34 SEAT CLIMATE CONTROL MODULE (IF EQUIPPED) STUD 1 FUSE 68 (W/ 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 W/ ACTIVE, VACUUM BRAKE, 10 SERIES W/ DRIVER POWER SEAT ADJUSTER W/ ELECTRICAL ALARM BULB W/ INDIVIDUAL FRONT SEAT W/ INDIVIDUAL FRONT SEAT W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ INDIVIDUAL FRONT SEAT, POWER MIRROR W/ PASSENGER POWER SEAT ADJUSTER W/ REAR POWER WINDOW W/ ROOF MOUNTED PROVI- LIONS W/ SUNROOF W/ WRECKER W/ ROOF, EMERGENCY BEACON VEHICLE RELAY ROOF LAMP RELAY W/O CAMPER W/ CAMPER TRAILER TRAILER PROVISION PROVISION W/O INDIVIDUAL FRONT SEAT, POWER MIRROR W/O INDIVIDUAL W/ INDIVIDUAL FRONT SEAT, FRONT SEAT, POWER MIRROR POWER MIRROR WHT RED/ WIRE WHT WIRE

2 OF 7) PDM FUSE 9 (W/ COMFORT, DECOR LEVEL 3 CONVENIENCE PACKAGE) AIR BAG BATT FUSE 45 ALC/COMP FUSE 58 AMP FUSE 41 AUDIO AMPLIFIER (PREMIUM AUDIO BRANDED W/ AMPLIFIER SPEAKER SYSTEM) 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 CREW CAB W/ INDIVIDUAL FRONT SEAT AUX RSE PWR 2 FUSE 19 FUSE 2 CREW CAB/ EXTENDED CAB W/ PERFORMANCE EXHANCED AUDIO, FRONT COMPARTMENT CONSOLE 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 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 MANUAL A/C NCA WIRE ORG/ WIRE PERFORMANCE ENHANCED AUDIO PREMIUM AUDIO BRANDED W/ AMPLIFIER SPEAKER SYSTEM POWER LOCKS W/O INDIVIDUAL FRONT SEAT, POWER MIRROR POWER TAKE OFF (BLUNT CUT) PTO FUSE 47 RADIO RDO FUSE 42 REAR SEAT DIGITAL AUDIO (RSA) RADIO CONTROL RECEIVER (IF (IF EQUIPPED) EQUIPPED) RED WIRE RED/ WHT 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 W/ AUX- ILIARY BATTERY W/ CUSTOM FRONT COMPARTMENT FLOOR CONSOLE W/ FULL W/ REAR SEAT FEATURE ENTERTAIN- CENTER MENT SEAT PACKAGE W/ INDIVIDUAL FRONT SEAT W/ LUXURY W/ UNIVERSAL GARAGE DOOR OPENER W/ W/O LUXURY LUXURY W/ WRECKER, EMERGENCY VEHICLE ROOF LAMP, ROOF BEACON RELAY W/O LUXURY, RADIO W/O RADIO W/O W/ LUXURY LUXURY W/ONSTAR WHT RED/ WIRE WHT WIRE WINDSHIELD WASHER SOLVENT HEATER (IF EQUIPPED)

4 SPEED A/T 6 SPEED A/T ALLISON LCT 1000 4.3L 6.0L (VIN K) 4.3L, 6.0L (VIN G) A/C CMPRSR RELAY ACTIVE 2 SPEED AIR BAG IGN FUSE 40 AUTOMATIC TRANSMISSION (4 SPEED A/T) AUTOMATIC TRANSMISSION (6 SPEED A/T, 2 MODE HYBRID) AUX HVAC-IGN FUSE 48 BCK/UP LAMP PCB RELAY BLK WIRE BRN WIRE DIGITAL VIDEO DISC (DVD) CONTROL MODULE (IF EQUIPPED) DRIVE MOTOR GENERATOR POWER INVERTER MODULE (6.0L (VIN J)) ECM-IGN FUSE 56 ELECT- RONIC FROM BODY CONTROL MODULE (DIAGRAM 4 OF 7) FROM DLIS FUSE 35 (DIAGRAM 4 OF 7) HDLP LO/HID RELAY HEATED STEERING WHEEL CONTROL MODULE HEATED STEERING WHEEL CONTROL MODULE INLINE FUSE HI BEAM PCB RELAY HORN PCB RELAY HVAC-IGN FUSE 55 INFLATABLE RESTRAINT I/P MODULE ON/OFF INDICATOR (IF EQUIPPED) INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL L/GATE FOG LAMP DRL PCB FRT WASH PCB RELAY RELAY RELAY PCB RELAY 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 REAR VIEW CAMERA RECIRCULATION ACTUATOR RED WIRE RIGHT I/P J/B (IN RIGHT END OF DASH) RUN/ CRNK RELAY SEAT CLIMATE CONTROL MODULE SEO/ALC FUSE 54 STRTR RELAY TO FAN-1 FUSE 57 (DIAGRAM 6 OF 7) FRT WPR FUSE 36 TRAILER STOP BRAKE LAMP CONTROL SWITCH MODULE TRANS IGN 1 FUSE 19 TRANSFER CASE SHIFT CONTROL MODULE (IF EQUIPPED) TRLR LT STOP/TURN PCB RELAY TRLR RT STOP/TURN PCB RELAY UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) W/ FRONT SEAT COOLING HEATER W/O FRONT TO SEAT COOLING (DIAGRAM HEATER 6 OF 7) W/O W/ STEERING STEERING WHEEL WHEEL HEATER HEATER WIPER CONTROL PCB RELAY WIPER REAR FUEL CHMSL SPEED WASH PMP PCB PCB PCB RELAY RELAY RELAY RELAY YEL WIRE

1 14 11 4 6 PPL PNK ELEM CTRL SPLY VOLT ELEM CTRL ELEM CTRL SPLY VOLT WIRE 1 4 5 6 GND GND B+ B+ 2 3 5 6 PNK LOW REF LOW REF LOW REF LOW REF WIRE 4 1 3 2 TEMP SIG TEMP SIG TEMP SIG TEMP SIG BLK WIRE COMPUTER DATA LINES SYSTEM 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 2 GRY WIRE HOT AT ALL TIMES LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MEMORY SEAT MODULE (UNDER FRONT OF DRIVER'S SEAT) NCA WIRE PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER'S SEAT BACK) PASSENGER CUSHION HEATED SEAT ELEMENT (IN PASSENGER'S SEAT CUSHION) PNK ELEM CTRL WIRE PNK WIRE PPL RED/WHT WIRE SERIAL DATA TAN WIRE TAN/BLK WIRE YEL WIRE YEL/BLK WIRE

11 12 781 780 UNLCK SIG LCK SIG 2 3 4 GMLAN 3 10 B+ GMLAN 7 9 6 LCK CNTRL UNLCK CNTRL UNLCK CNTRL 194 5921 9 18 245 244 UNLCK SIG LCK SIG ANT B+ BACK DOOR UNLCK DIODE DRIVER DOOR BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN/WHT WIRE COAX COMPUTER DATA LINES SYSTEM DIM FUSE 7 BCM FUSE 15 DK BLU WIRE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) DISPLAY DSM FUSE 25 FRONT REAR DOOR DOOR LCK LCK DIODE DIODE GMLAN GROUND DISTRIBUTION SYSTEM GRY WIRE HOT AT ALL TIMES HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH) I/P FUSE BLOCK (LEFT SIDE OF DASH, INSTRUMENT PANEL CLUSTER (IPC) INTERIOR LIGHTS KEYLESS ENTRY ANTENNA LCK 1 FUSE 21 LCK 2 FUSE 11 LEFT REAR DOOR LATCH ASSEMBLY (CREW CAB: REAR OF LEFT REAR DOOR) LOCK ACTUATOR LOCK LOCK ACTUATOR ACTUATOR LOCK PCB RELAY LT BLU WIRE ORG/BLK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (TOP REAR OF PASSENGER COMPT) RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) SECURITY INDICATOR LOGIC SYSTEM TAN WIRE UNLCK 2 FUSE 10 UNLCK DIODE PDM FUSE 9 DRV UNLCK FUSE 26 UNLCK 1 FUSE 18 UNLOCK PCB RELAY W/ ACTIVE BRAKE CONTROL W/O POWER WINDOW WHT WIRE

2 3 4 GMLAN 3 10 B+ GMLAN 4 6 B+ GND 4 6 B+ LOCK GND 7 9 LCK CNTRL UNLCK CNTRL 9 4 5 7 8 GMLAN SW SIG LOW REF LCK CNTRL PPL UNLCK CNTRL 9 7 8 GMLAN LCK CNTRL UNLCK CNTRL UNLOCK BCM FUSE 15 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COAX COMPUTER DATA LINES SYSTEM DDM FUSE 4 DIM FUSE 7 DK GRN WIRE DRIVER DOOR LOCK SWITCH DRIVER DOOR LOCK/ WINDOW SWITCH DSM FUSE 25 GMLAN DRIVER INFORMATION CENTER (DIC) DISPLAY GROUND DISTRIBUTION SYSTEM GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, INSTRUMENT PANEL CLUSTER (IPC) KEY SWITCH KEYLESS ENTRY ANTENNA LCK 1 FUSE 21 LOCK LOCK ACTUATOR LOCK/ UNLOCK PCB RELAY LOGIC LT BLU WIRE LT GRN WIRE PACKAGE PASSENGER DOOR LOCK SWITCH PASSENGER DOOR LOCK/ WINDOW SWITCH PDM FUSE 9 POWER DISTRIBUTION SYSTEM PPL RED/WHT WIRE REMOTE CONTROL DOOR LOCK RECEIVER (RCDLR) (TOP REAR OF PASSENGER COMPT) RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RIGHT REAR DOOR LATCH ASSEMBLY (CREW CAB: REAR OF RIGHT REAR DOOR) SECURITY INDICATOR LOGIC TAN WIRE UNLCK 1 FUSE 18 UNLOCK W/ COMFORT, DECOR LEVEL 3 CONVENIENCE WHT WIRE YEL WIRE

BLK WIRE BRN/WHT WIRE DEFOGGER SYSTEM DK BLU/WHT WIRE DOWN DRIVER OUTSIDE REARVIEW MIRROR HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LEFT LT BLU/WHT WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/WHT WIRE OUTSIDE REARVIEW MIRROR SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PPL/WHT WIRE PWR MIR FUSE 14 RED/WHT WIRE RIGHT TAN WIRE TAN/WHT WIRE WHT WIRE

1 2 4 10 5 7 RETRACT CTRL EXTEND CTRL SENS SIG LOW REF SENS SIG 2 6 1 7 3 9 4 POSITION CTRL MTR COMM POSITION CTRL SPLY VOLT LOW REF 4 6 B+ GND 9 2 12 SERIAL DATA PNK WIRE AUTOMATIC DAY/NIGHT MIRROR BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM COMPUTER DATA LINES SYSTEM ELECTROCHROMIC DDM FUSE 4 DEFOGGER SWITCH DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DOWN L/R SELECT DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER OUTSIDE REARVIEW MIRROR EXTEND GRY WIRE HOT AT ALL TIMES HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT SIDE OF DASH, L/R SELECT SW PWR LEFT LOGIC LT BLU WIRE MIRROR CIRCUIT OUTSIDE REARVIEW MIRROR SWITCH PNK WIRE RED/WHT WIRE RETRACT RIGHT WHT WIRE YEL WIRE

1 2 4 10 5 7 RETRACT CTRL EXTEND CTRL SENS SIG LOW REF SENS SIG 2 6 1 3 7 POSITION CTRL MTR COMM POSITION CTRL LOW REF SPLY VOLT 4 6 B+ GND BLK WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DK GRN WIRE GRY/BLK WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PASSENGER DOOR LOCK/ WINDOW SWITCH PASSENGER OUTSIDE REARVIEW MIRROR PDM FUSE 9 POWER DISTRIBUTION SYSTEM PPL RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) SERIAL DATA WHT WIRE YEL WIRE