GMC Sierra 2500 HD (2002-2012) blunt cut) Wiring diagrams

4.3L 8 GA- 8 GA-BLK/WHT WIRE ABS FUSE TBC BATT FUSE AUXILIARY BATTERY RELAY (RIGHT REAR OF ENGINE COMPT) BATTERY (LEFT) BATTERY (RIGHT) BATTERY (RIGHT) (W/AUX BATTERY) BATTERY CABLE JUNCTION BLOCK BLK WIRE BLK/WHT WIRE BLUNT CUT) BRN WIRE CIG LTR FUSE CIGAR LIGHTER COOL FAN FUSE COOL/FAN RELAY 1 COOL/FAN RELAY 2 COOL/FAN RELAY 3 CUST FEED FUSE DATA LINK CONNECTOR DIGITAL RADIO RADIO RECEIVER DIGITAL REAR SEAT RADIO AUDIO (RSA) RECEIVER CONTROLLER AUDIO AMPLIFIER ELECTRONIC BODY BRAKE CONTROL CONTROL MODULE MODULE EMERGENCY VEHICLE ROOF LAMP RELAY EVAPORATIVE EMISSIONS CANISTER VENT SOLENOID EXCEPT 4.3L EXCEPT LUXURY FUSE FUSIBLE LINK 1 FUSIBLE LINK 4 FUSIBLE LINK 5 GENERATOR (4.3L, 8.1L) GENERATOR (4.8L, 5.3L, 6.0L) I/P JUNCTION BLOCK (RIGHT SIDE OF DASH) I/P RELAY BLOCK (LEFT OF STEERING COLUMN) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN A FUSE STUD 2 FUSE IGN B FUSE LUXURY MEGA FUSE MOBILE RADIO FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) NCA WIRE ORG/ WIRE RADIO AMP FUSE RADIO FUSE REAR SEAT RADIO AUDIO (RSA) CONTROLLER RED WIRE RED/BLK WIRE RELAY RELAY/ FUSE RTD FUSE S/ROOF FUSE RR WIPER FUSE EAP FUSE STARTER STARTER RELAY STUD 1 FUSE SUNROOF CONTROL MODULE TO IGNITION SWITCH (DIAGRAM 6 OF 6) TRAILER CONNECTOR (7 WAY) UNDERHOOD COOLING FAN FUSE BLOCK (LEFT SIDE OF ENG COMPT) VSES/ ECAS FUSE FUSE W/ AUX BATTERY W/ WRECKER EMERGENCY LAMP WHEEL TRAILER WIRING PROVISION (BLUNT CUT) WRECKER RELAY

4.3L 8 GA- 8 GA-BLK/WHT WIRE ABS FUSE TBC BATT FUSE AUXILIARY BATTERY RELAY (RIGHT REAR OF ENGINE COMPT) BATTERY (LEFT) BATTERY (RIGHT) BATTERY (RIGHT) (W/AUX BATTERY) BATTERY CABLE JUNCTION BLOCK BLK WIRE BLK/WHT WIRE BLUNT CUT) BRN WIRE CIG LTR FUSE CIGAR LIGHTER COOL FAN FUSE COOL/FAN RELAY 1 COOL/FAN RELAY 2 COOL/FAN RELAY 3 CUST FEED FUSE DATA LINK CONNECTOR DIGITAL RADIO RADIO RECEIVER DIGITAL REAR SEAT RADIO AUDIO (RSA) RECEIVER CONTROLLER AUDIO AMPLIFIER ELECTRONIC BODY BRAKE CONTROL CONTROL MODULE MODULE EMERGENCY VEHICLE ROOF LAMP RELAY EVAPORATIVE EMISSIONS CANISTER VENT SOLENOID EXCEPT 4.3L EXCEPT LUXURY FUSE FUSIBLE LINK 1 FUSIBLE LINK 4 FUSIBLE LINK 5 GENERATOR (4.3L, 8.1L) GENERATOR (4.8L, 5.3L, 6.0L) I/P JUNCTION BLOCK (RIGHT SIDE OF DASH) I/P RELAY BLOCK (LEFT OF STEERING COLUMN) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN A FUSE STUD 2 FUSE IGN B FUSE LUXURY MEGA FUSE MOBILE RADIO FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) NCA WIRE ORG/ WIRE RADIO AMP FUSE RADIO FUSE REAR SEAT RADIO AUDIO (RSA) CONTROLLER RED WIRE RED/BLK WIRE RELAY RELAY/ FUSE RTD FUSE S/ROOF FUSE RR WIPER FUSE EAP FUSE STARTER STARTER RELAY STUD 1 FUSE SUNROOF CONTROL MODULE TO IGNITION SWITCH (DIAGRAM 6 OF 6) TRAILER CONNECTOR (7 WAY) UNDERHOOD COOLING FAN FUSE BLOCK (LEFT SIDE OF ENG COMPT) VSES/ ECAS FUSE FUSE W/ AUX BATTERY W/ WRECKER EMERGENCY LAMP WHEEL TRAILER WIRING PROVISION (BLUNT CUT) WRECKER RELAY

1 2 8 VOICE SIGNAL VOICE LOW REF 10 11 12 13 14 15 16 AUD OUT - DRAIN WIRE ANTENNA BARE BARE (BLUNT CUT) BARE DRAIN WIRE BLK/WHT WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE COAX COAX ANTENNA COMPUTER DATA LINES SYSTEM DIGITAL RADIO ANTENNA DIGITAL RADIO RECEIVER (IF EQUIPPED) (BEHIND RIGHT SIDE OF INSTRUMENT PANEL) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GROUND GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) LEFT FRONT DOOR SPEAKER LEFT FRONT TWEETER SPEAKER LEFT REAR DOOR SPEAKER (EXCEPT STANDARD CAB) LEFT REAR SPEAKER (STANDARD CAB) LF AUD + RT AUD + LF SPK OUT+ LF SPK OUT- RR SPK OUT+ RR SPK OUT- GROUND LR SPK OUT + LR SPK OUT - RF SPK OUT + RF SPK OUT - LT BLU WIRE LT GRN WIRE ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE RADIO RADIO FUSE RIGHT AUD SIG LEFT AUD SIG COMMON AUD SIG VOICE LOW REF CELL VOICE SIG RIGHT FRONT DOOR SPEAKER RIGHT FRONT TWEETER SPEAKER RIGHT REAR DOOR SPEAKER (EXCEPT STANDARD CAB) RIGHT REAR SPEAKER (STANDARD CAB) SERIAL DATA TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) VEHICLE COMMUNICATION INTERFACE MODULE (BEHIND PASSENGER AIR BAG MODULE) YEL WIRE

2061 2062 1732 2 1 8 VOICE LOW REF VOICE SIGNAL DRAIN WIRE 511 1947 1946 546 1851 LF AUD SIG+ LF AUD SIG- RR AUD SIG- RR AUD SIG+ GROUND 599 1547 1546 512 LR AUD SIG + LR AUD SIG - RF AUD SIG - RF AUD SIG + ANTENNA BARE BARE DRAIN WIRE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/WHT WIRE COAX COMPUTER COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GROUND HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LR AUD SIG+ LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE PROG VOICE RADIO RADIO FUSE REAR SEAT AUDIO CONTROLLER (ON REAR OF CENTER CONSOLE) REMOTE RADIO CONTROL SIGNAL REMOTE RADIO CONTROL SUPPLY VOLTAGE RR AUD SIG+ SEEK UP SEEK DN SERIAL DATA SOURCE DN SOURCE UP SYSTEM DATA LINES TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) UPPER LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY UPPER RIGHT STEERING WHEEL CONTROL SWITCH ASSEMBLY VEHICLE COMMUNICATION INTERFACE MODULE (BEHIND RIGHT SIDE OF DASH) VOL UP VOL DN WHT WIRE

2061 2062 1732 2 1 8 VOICE LOW REF VOICE SIGNAL DRAIN WIRE 511 1947 1946 546 1851 LF AUD SIG+ LF AUD SIG- RR AUD SIG- RR AUD SIG+ GROUND 599 1547 1546 512 LR AUD SIG + LR AUD SIG - RF AUD SIG - RF AUD SIG + ANTENNA BARE BARE DRAIN WIRE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/WHT WIRE COAX COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GROUND HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LR AUD SIG+ LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE PROG VOICE RADIO RADIO FUSE REAR SEAT AUDIO CONTROLLER (ON REAR OF CENTER CONSOLE) REMOTE RADIO CONTROL SIGNAL REMOTE RADIO CONTROL SUPPLY VOLTAGE RR AUD SIG+ SEEK UP SEEK DN SERIAL DATA SOURCE DN SOURCE UP TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) UPPER LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY UPPER RIGHT STEERING WHEEL CONTROL SWITCH ASSEMBLY VEHICLE COMMUNICATION INTERFACE MODULE (BEHIND RIGHT SIDE OF DASH) VOL UP VOL DN WHT WIRE

3 4 5 6 7 8 9 10 11 12 13 14 15 16 RT AUD + BARE BARE 4 5 BARE BARE BLK/WHT WIRE BLUNT CUT) BRN/WHT WIRE CD PLAYER REMOTE PLAYBACK DEVICE (IF EQUIPPED) COAX ANTENNA COMPUTER DATA LINES SYSTEM DIGITAL RADIO ANTENNA DIGITAL RADIO RECEIVER (IF EQUIPPED) DIMMING RT AUD + LF AUD + AUD OUT - GROUND SERIAL DATA B+ DK GRN/WHT WIRE GROUND AUD OUT - DRAIN WIRE HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFO FUSE LF AUD + LT GRN WIRE ORG/ WIRE SERIAL DATA SPLICE PACK TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT)

2061 2062 1732 2 1 8 VOICE LOW REF VOICE SIGNAL DRAIN WIRE 511 1947 1946 546 1851 LF AUD SIG+ LF AUD SIG- RR AUD SIG- RR AUD SIG+ GROUND 599 1547 1546 512 LR AUD SIG + LR AUD SIG - RF AUD SIG - RF AUD SIG + ANTENNA BARE BARE DRAIN WIRE BCM CLASS 2 SERIAL DATA BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY CONTROL MODULE (BELOW STEERING COLUMN) BRN WIRE BRN/WHT WIRE COAX COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE GRN WIRE GROUND HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LR AUD SIG+ LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE PROG VOICE RADIO RADIO FUSE REAR SEAT AUDIO CONTROLLER (ON REAR OF CENTER CONSOLE) REMOTE RADIO CONTROL SIGNAL REMOTE RADIO CONTROL SUPPLY VOLTAGE RR AUD SIG+ SEEK UP SEEK DN SERIAL DATA SOURCE DN SOURCE UP TAN WIRE UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPARTMENT) UPPER LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY UPPER RIGHT STEERING WHEEL CONTROL SWITCH ASSEMBLY VEHICLE COMMUNICATION INTERFACE MODULE (BEHIND RIGHT SIDE OF DASH) VOL UP VOL DN WHT WIRE

1694 1478 TRANSMISSION SYSTEM 2755 2530 5425 LOW REF FUEL PRESS VOLT INJ + GROUP 4 INJ 6 INJ 3 2931 6265 LOW REF CMP SENSOR SIG 492 432 MAF SENSOR SIG TURBOCHARGER SIG TUR VANE POS SIG APP SENSOR 2 SIG BLK WIRE BLK/WHT WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (FRONT OF ENGINE) COOLANT LEVEL SIG COOLANT LEVEL SWITCH (IN COOLANT RESERVOIR) CRUISE CONTROL SYSTEM CRUISE CONTROL SYSTEM CRUISE SET SW SIG DK BLU WIRE DK BLU/WHT WIRE EGR VAL POS SIG ECT SENSOR SIG ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) ENGINE COOLANT TEMPERATURE SENSOR (TOP FRONT OF ENGINE) ENGINE OIL LEVEL SWITCH (LEFT REAR OF OIL PAN) EXHAUST GAS RECIRCULATION (EGR) VALVE GRN WIRE GRY WIRE GRY/BLK WIRE IAT SENSOR 2 SIG IAT SENSOR SIG LOW REF LOW REF ENG SHUTOFF SIG CPP SW SIG LOW REF TUR VANE POS INJ + GROUP 3 INJ 5 INJ 4 5930 5423 PPL 845 844 LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE OIL PRESS SIG ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE PTO ON SW SIG CRUISE ON SW SIG LOW REF LOW REF 397 552 CRUISE CONTROL SYSTEM RED/BLK WIRE STARTING/ CHARGING SYSTEM STARTER ENABLE FUEL PRESS INJ + GROUP 2 2834 5422 TAN WIRE TAN/WHT WIRE TURBOCHARGER VANE POSITION CONTROL SOLENOID VALVE WATER IN FUEL SENSOR (ON FUEL FILTER ELEMENT) WHT WIRE YEL WIRE YEL/BLK WIRE

2 3 4 5 6 7 8 PNK WIRE 9 10 11 12 13 PNK WIRE AXLE SW SIG BACKUP VOLT BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY RELAY BLOCK BRN WIRE CKP SENSOR SIG CLUTCH PEDAL POSITION SWITCH (TOP OF PEDAL BRACKET) DK BLU WIRE DK BLU/WHT WIRE ECM FUSE ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FRP SENSOR SIG FUEL PRESSURE REGULATOR GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN ACC, RUN, START HOT IN RUN BRAKE FUSE HOT IN RUN, START I/P FUSE BLOCK I/P FUSE BLOCK IGN 0 FUSE IGN 1 INJ 1 INJ 2 INTAKE AIR HEATER FUSE INTAKE AIR TEMPERATURE (IAT) SENSOR 2 INTAKE AIR TEMPERATURE (IAT)/ MASS AIRFLOW (MAF) SENSOR (IN AIR INDUCTION TUBE) LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK 1 2 WIRE PNK 23 24 25 26 27 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 28 29 30 31 PPL/WHT WIRE RED WIRE RED/BLK WIRE STOPLAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) TAN WIRE TRANSMISSION SYSTEM TUR VAN POS UNDER- HOOD FUSE BLOCK WATER IN FUEL WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CRANKSHAFT POSITION SENSOR (RIGHT SIDE OF ENGINE) CRUISE CONTROL SYSTEM CRUISE FUSE DK BLU WIRE DK GRN/WHT WIRE FOG LP FUSE FUEL PUMP (AUXILIARY TANK (LEFT SIDE FRAME RAIL) GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN I/P FUSE BLOCK IND LOGIC LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR NCA WIRE OFF ON ORG/ WIRE ORG/BLK WIRE PNK PNK WIRE PNK WIRE POWER TAKE OFF RELAY (NEAR UNDERHOOD FUSE BLOCK) POWER TAKE OFF SWITCH PPL PPL/WHT WIRE SET- TAN WIRE TURBOCHARGER VANE POSITION SENSOR UNDERHOOD FUSE BLOCK WHT WIRE WHT/BLK WIRE YEL WIRE