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

12 VOLT REF 12-VOLT REF ANGLE SENSOR PHASE B CAN BUS LOW SERIAL DATA 12-VOLT REF LF WHEEL SPD SENS SIG 16 17 2500 2501 COMPUTER DATA BUS + DATA BUS - DATA LINES SYSTEM 2501 2501 COMPUTER DATA LINES SYSTEM 3 5 SENS PHASE A SENS PHASE C 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 DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) EXCEPT LUXURY GAS GROUND GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HI SERIAL DATA HOT AT ALL TIMES I/P MULTI-FUNCTION SWITCH INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR WHEEL SPEED SENSOR (WSS) (ON LEFT REAR BRAKE BACKING PLATE) LO SERIAL DATA LOGIC LOW REF 12-VOLT REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LUXURY NCA WIRE ORG/BLK 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 REAR WHEEL SPEED SENSOR (WSS) (ON RIGHT REAR BRAKE BACKING PLATE) SENS PHASE B SERIAL DATA SERIAL DATA BATTERY POSITIVE VOLTAGE SERIAL DATA BUS (+) SERIAL DATA BUS (+) BATTERY POSITIVE VOLTAGE SERIAL DATA BUS- SERIAL DATA BUS- GROUND SIG TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL SWITCH SIGNAL TRACTION CTRL SW SIG VEHICLE SPD SIG RADIO 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 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 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 LT BLU/BLK 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 WIRE 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

12-VOLT REF 12-VOLT REF LR SIG WHEEL SPD SENS 12-VOLT REF LF WHEEL SPD SENS SIG 16 17 2500 2501 COMPUTER DATA LINES SYSTEM DATA BUS + DATA BUS - 2 4 3 1 SERIAL DATA 12-VOLT SERIAL DATA LOW REF 2150 2501 2501 COMPUTER DATA LINES SYSTEM 2500 2500 COMPUTER DATA LINES SYSTEM 3 4 5 6 SENS PHASE A SENS PHASE B SENS PHASE C 35 36 37 38 SERIAL DATA 6032 (OR 817) ABS INDICATOR ABS-1 FUSE 61 ABS-2 FUSE 9 BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRAKE BOOSTER VACUUM SENSOR (LEFT REAR OF ENGINE COMPT) BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRAKE PRESSURE MODULATOR VALVE BRAKE WARNING INDICATOR BRN WIRE CAN BUS HIGH SERIAL DATA GROUND COMPUTER DATA LINES SYSTEM DATA SERIAL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF FRAME ASSEMBLY) EXCEPT 4.3L EXCEPT LUXURY GAS GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HOT AT ALL TIMES HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) I/P MULTI-FUNCTION SWITCH (W/ ACTIVE BRAKE CONTROL) INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 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) LF WHEEL SPD SENS SIG LOGIC LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE LUXURY NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PARK BRAKE SWITCH (ON PARK BRAKE PEDAL ASSEMBLY) PARK BRK SW POWER DISTRIBUTION SYSTEM PPL RADIO RED WIRE RED/BLK WIRE RED/WHT WIRE RF SIG WHEEL SPD SENS RIGHT FRONT WHEEL SPEED SENSOR (WSS) (ON RIGHT FRONT STEERING KNUCKLE) SENSOR PHASE A 5-VOLT REF BOOSTER VACUUM SENS SIG SIG STEERING ANGLE SENS SIG STOP LAMP SWITCH (TOP OF BRAKE PEDAL ASSEMBLY) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRACTION CONTROL SWITCH SIGNAL TRACTION CTRL SW SIG 12 13 812 7062 12-VOLT REF PPL BRAKE SW SIG VEH SPD SIGNAL VEHICLE SPD SIG VEHICLE SPD SIG LOW REF GROUND SERIAL DATA BUS- SERIAL DATA BUS- W/ ACTIVE BRAKE CONTROL W/O ACTIVE BRAKE CONTROL WHT WIRE YAW RATE, LATERAL ACCELERATION SENSOR (W/ ACTIVE BRAKE CONTROL) YEL WIRE YEL/BLK WIRE

12 VOLT REFERENCE BAT POS VOLT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DK GRN WIRE GROUND HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, LT GRN WIRE OUTSIDE IGN MOISTURE VOLT SENSOR SIGNAL OUTSIDE MOISTURE SENSOR SIGNAL OUTSIDE MOISTURE SIG 1 OUTSIDE MOISTURE SIG 2 POWER DISTRIBUTION SYSTEM RED/WHT WIRE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RT STOP TRN FUSE 8 SERIAL DAT TAN WIRE WHT WIRE WINDSHIELD OUTSIDE MOISTURE SENSOR (NEAR INSIDE REARVIEW MIRROR MOUNT)

BATT POS VOLT GND BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DK BLU/WHT WIRE DK GRN WIRE DRIVER INFORMATION CENTER (DIC) HOT AT ALL TIMES I/P WINDSHIELD WASHER SOLVENT HEATER SWITCH MULTI- FUNCTION SWITCH IGN I/II INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOGIC LOW SPD GMLAN SERIAL DATA LT GRN WIRE NCA WIRE ORG/ WIRE PNK WIRE RED/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WASHER FLD HTD CTRL SW LED SUPPLY VOLT GND WNDSHLD WASHER SW SIG IGNITION 3 VOLT WINDSHIELD WASHER SOLVENT HEATER (LEFT REAR CORNER OF ENGINE COMPT) WINDSHIELD WASHER SW SIG PNK WIRE WIPER/ WASHER CIRCUIT WSW/HTR FUSE 66 (EXCEPT 6.6L) FUSE 61 (6.6L)

15 7 WASHER RLY CTRL MTR PARK SW SIG 24 9 8 5 PNK WASHER SW SIG WIPER SW LO SIG LOW REF WIPER SW HI SIG WIRE BAT POS VOLT BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM DK GRN WIRE DRIVER INFORMATION CENTER (DIC) FRONT WASHER DIODE FRT WASH FUSE 7 (EXCEPT 6.6L) FRT WASH PCB RELAY FRT WPR FUSE 36 (EXCEPT 6.6L) WPR FUSE 33 (6.6L) FUSE 5 (6.6L) GROUND DISTRIBUTION SYSTEM GRY WIRE HI LO HI LO OFF INT HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOW WASHER FLUID IND SERIAL CTRL DATA LOGIC LT BLU WIRE LT GRN WIRE MIST MIST OFF INT WIPER SWITCH ORG/ WIRE PNK WIRE PPL RED/WHT WIRE RT STOP TRN FUSE 8 SERIAL DATA TAN WIRE TAN/BLK WIRE TURN SIGNAL/ MULTI-FUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WASHER SWITCH WINDSHIELD WASHER FLUID LEVEL SWITCH (BOTTOM OF WASHER FLUID RESERVOIR) WINDSHIELD WASHER FLUID PUMP (BOTTOM OF WASHER FLUID RESERVOIR) WINDSHIELD WIPER MOTOR (UNDER LEFT SIDE OF WINDSHIELD COWL) WINSHIELD WIPER SW HI SIG WIPER CONTROL PCB RELAY WIPER HIGH SPEED DIODE WIPER LOW SPEED DIODE WIPER SPEED PCB RELAY WNDSHLD WIPER SW SIG 2 YEL WIRE

6399 (OR 821) 71 72 73 VSS HIGH SIG VSS LO SIG GND A/C CL CTRL A/C PRESS SIG LO REF AIR CONDITIONING SYSTEM ANTI-LOCK BRAKES SYSTEM AXL SW SIG BANK 1 SENSOR 2 (DOWNSTREAM OF LEFT CATALYTIC CONVERTER) BANK 2 SENSOR 2 (DOWNSTREAM OF RIGHT CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BRK SW SIG BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM COOLING FANS SYSTEM COMPUTER DATA LINES SYSTEM DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) FRONT FUEL PUMP, FUEL CTRL FUEL CTL-SEC STRT RLY CTRL FUEL LVL-SEC FUEL PMP RELAY FUEL PUMP FUSE 20 FUEL TANK PRESSURE (FTP) SENSOR (ON FUEL PUMP, SENDER ASSEMBLY) GMLAN - GMLAN + GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES IAT SIG LO REF IGN 1 VOLT LO REF LO REF LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAF SIG MIL CTRL PPL NCA WIRE ORG/BLK WIRE ORG/WHT WIRE PNK WIRE PNK/BLK WIRE PPL PPL FUEL LVL-PRI CFAN HI CTL ACC SER DATA PPL LO REF FTP SIG PPL/WHT WIRE PWTN RLY CTRL RED/WHT WIRE SENDER ASSEMBLY (IN FRONT FUEL TANK) STARTING/ CHARGING SYSTEM TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TRANSMISSIONS SYSTEM UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VSS CFAN LO CTRL W/ 10 SERIES W/ 31 SERIES W/O 10 SERIES WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

AUX HVAC-IGN FUSE 48 BANK 1 SENSOR 1 (UPSTREAM OF LEFT CATALYTIC CONVERTER) BANK 2 SENSOR 1 (UPSTREAM OF RIGHT CATALYTIC CONVERTER) BLK WIRE BLK/WHT WIRE BRAKE FLUID LEVEL SWITCH (ON BRAKE MASTER CYLINDER RESERVOIR) BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION (CMP) SENSOR (FRONT OF ENGINE, ABOVE CRANK PULLEY) COMPUTER DATA LINES SYSTEM CRANKSHAFT POSITION (CKP) SENSOR (RIGHT REAR OF ENGINE) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE COOLANT TEMPERATURE (ECT) SENSOR (ON TOP OF ENGINE) ENGINE OIL PRESSURE (EOP) SENSOR (TOP REAR OF ENGINE) ENGINE OIL PRESSURE IND FROM INJ-B FUSE 13 (DIAGRAM 2 OF 5) GRY WIRE GRY/BLK WIRE GRY/WHT WIRE HEATED OXYGEN HOT AT ALL TIMES UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) IPC FUSE 46 HOT IN RUN OR START IGN B+ IGN MALFUNCTION INDICATOR LAMP INSTRUMENT PANEL CLUSTER (IPC) LO BUS LOGIC LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR (ON TOP OF INTAKE MANIFOLD) NCA WIRE ORG/BLK WIRE PNK PNK 14 15 WIRE PNK PNK WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL PNK PNK 5 6 7 WIRE PPL PNK PNK WIRE PPL/WHT WIRE RED/WHT WIRE SNSR FUSE 18 TAN WIRE TAN/WHT WIRE W/ BASE BODY OR CHASSIS BODY EQUIPMENT W/O BASE BODY OR CHASSIS BODY EQUIPMENT WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BRN WIRE BRN/WHT WIRE CKP SIG DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE COMPT NEAR FAN SHROUD) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF GRY WIRE GRY/BLK WIRE GRY/WHT WIRE IC 1 CTRL IC 2 CTRL IC 3 CTRL IC 4 CTRL IC 5 CTRL IC 6 CTRL IC 7 CTRL IC 8 CTRL IGNITION COILS (UPPER LEFT SIDE OF ENGINE) LO REF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK PNK WIRE PNK PPL WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK PNK WIRE PPL/WHT WIRE RED WIRE SPARK PLUG TAN WIRE TAN/WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

BLK WIRE BREAKOUT) BRN WIRE BRN/WHT WIRE CHG IND SIG CMP SIG CYL OFF CTRL 4 DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT, NEAR FAN SHROUD) EOP SIG EVAPORATIVE EMISSION (EVAP) CANISTER PURGE SOLENOID VALVE (ON INTAKE MANIFOLD) GEN FDC SIG GRY WIRE GRY/WHT WIRE HARNESS, 5 CM IGNITION COILS (UPPER RIGHT SIDE OF ENGINE) INJ 2 CTRL INJ 3 CTRL INJ 4 CTRL INJ 7 CTRL LO REF LO REF LO REF LT BLU WIRE LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAP SIG PPL NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK PPL WIRE PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE RED WIRE SOL CTRL CYL OFF CTRL 3 CYL OFF CTRL 1 CYL OFF CTRL 2 SPARK PLUG STARTING/ CHARGING SYSTEM TAC MTR CTRL 2 TAC MTR CTRL 1 TAN WIRE TAN/WHT WIRE YEL WIRE YEL/BLK WIRE