GMC Cab & Chassis Sierra 3500 (2004-2007) org/ Wiring diagrams

A/T ISS SIG LOW VSS SIG LOW ALLISON TRANSMISSION AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRNK FUSE DATA BUS H DATA BUS L DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER SHIFT REQUEST SWITCH FLD PRESS SW SIG 4 TCC PCS LOW FLD PRESS SW SIG 2 TURB SPEED SW SIG FUSE GRD GRD B+ GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, ACC, START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) IGN 0 FUSE LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MOD MAIN NCA WIRE ORG/ WIRE ORG/WHT WIRE PNK 6 7 8 WIRE PNK 9 10 11 WIRE PNK FLD PRESS SW SIG 1 VSS SIG HIGH WIRE PNK IGN 0 VOLT WIRE PNK PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL CRANK VOLT PPL PPL PPL PPL 1 2 PPL/WHT WIRE PRESS CONTROL SOLE 2 PTO SIG RANGE SW SIG A MAIN PRESS SOLENOID RED WIRE RED/BLK WIRE RUN WIRE SERIAL DATA DATA BUS L STOPLAMP SWITCH (ON BRAKE PEDAL BRACKET) TAN WIRE TAN/WHT WIRE TCC PSC TR SW SIG B TFT SENSOR SIG TR SW SIG C TR SW SIG P TRANSFER CASE CIRCUIT TURB SPEED SW UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) TCM B FUSE WHT WIRE YEL WIRE YEL/BLK WIRE

2 4 6 9 GROUND GROUND GROUND CLASS 2 SERIAL DATA 30 44 57 45 MIL CONTROL CAN DATA L CAN DATA H SIGNAL HIGH - FRONT 56 39 PNK IGNITION PARK/NEUTRAL SIG WIRE ALLISON TRANSMISSION AUTOMATIC TRANSMISSION INPUT SPEED SENSOR (IN AUTOMATIC TRANSMISSION) AUTOMATIC TRANSMISSION TURBINE SPEED SENSOR (IN UPPER LEFT OF TRANSMISSION) BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROLS SYSTEM FUSE GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) INTERNAL MODE SWITCH IPC/DIC FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP OF TRANSMISSION) ORG/ WIRE ORG/BLK WIRE P/N PNK 6 7 8 WIRE PNK 9 10 11 WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL PPL PPL PPL 1 2 PPL/BLK WIRE PPL/WHT WIRE PRESSURE SWITCH MANIFOLD PTO STATUS RED WIRE RED/BLK WIRE SPLICE PACK TAN WIRE TAN/WHT WIRE TFT SENSOR TOW/HAUL SWITCH TRANSFER CASE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) BATTERY) VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

A/T ISS SIG LOW VSS SIG LOW ALLISON TRANSMISSION AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRNK FUSE DATA BUS H DATA BUS L DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER SHIFT REQUEST SWITCH FLD PRESS SW SIG 4 TCC PCS LOW FLD PRESS SW SIG 2 TURB SPEED SW SIG FUSE GRD GRD B+ GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, ACC, START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) IGN 0 FUSE LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MOD MAIN NCA WIRE ORG/ WIRE ORG/WHT WIRE PNK 6 7 8 WIRE PNK 9 10 11 WIRE PNK FLD PRESS SW SIG 1 VSS SIG HIGH WIRE PNK IGN 0 VOLT WIRE PNK PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL CRANK VOLT PPL PPL PPL PPL 1 2 PPL/WHT WIRE PRESS CONTROL SOLE 2 PTO SIG RANGE SW SIG A MAIN PRESS SOLENOID RED WIRE RED/BLK WIRE RUN WIRE SERIAL DATA DATA BUS L STOPLAMP SWITCH (ON BRAKE PEDAL BRACKET) TAN WIRE TAN/WHT WIRE TCC PSC TR SW SIG B TFT SENSOR SIG TR SW SIG C TR SW SIG P TRANSFER CASE CIRCUIT TURB SPEED SW UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) TCM B FUSE WHT WIRE YEL WIRE YEL/BLK WIRE

2 4 6 9 GROUND GROUND GROUND CLASS 2 SERIAL DATA 30 44 57 45 MIL CONTROL CAN DATA L CAN DATA H SIGNAL HIGH - FRONT 56 39 PNK IGNITION PARK/NEUTRAL SIG WIRE ALLISON TRANSMISSION AUTOMATIC TRANSMISSION INPUT SPEED SENSOR (IN AUTOMATIC TRANSMISSION) AUTOMATIC TRANSMISSION TURBINE SPEED SENSOR (IN UPPER LEFT OF TRANSMISSION) BLK WIRE BLK/WHT WIRE BLUNT CUT) BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DATA LINK CONNECTOR DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ENGINE CONTROLS SYSTEM FUSE GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) INTERNAL MODE SWITCH IPC/DIC FUSE LT BLU WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP OF TRANSMISSION) ORG/ WIRE ORG/BLK WIRE P/N PNK 6 7 8 WIRE PNK 9 10 11 WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM PPL PPL PPL PPL PPL 1 2 PPL/BLK WIRE PPL/WHT WIRE PRESSURE SWITCH MANIFOLD PTO STATUS RED WIRE RED/BLK WIRE SPLICE PACK TAN WIRE TAN/WHT WIRE TFT SENSOR TOW/HAUL SWITCH TRANSFER CASE) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) BATTERY) VEHICLE SPEED SENSOR WHT WIRE YEL WIRE YEL/BLK WIRE

A/T SHIFT LEVER BODY CONTROL MODULE BRK FUSE BRN WIRE CRUISE CONTROL MODULE POWER TAKEOFF (PTO) SWITCH CRUISE CONTROL ON/OFF SWITCH CRUISE FUSE CRUISE PTO DRIVER SHIFT REQUEST SWITCH ELECTRONIC BRAKE CONTROL MODULE FRONT AXLE ACTUATOR ENGINE CONTROL MODULE FROM AUXILIARY BATTERY RELAY (DIAGRAM 1 OF 5) FROM IGN A FUSE DIAGRAM 1 OF 5) FUSE GLOW PLUG CONTROL MODULE (GPCM) HTR/AC FUSE HVAC 1 FUSE HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT SIDE OF DASH, I/P JUNCTION BLOCK (BEHIND RIGHT SIDE OF DASH) IGN 0 FUSE IGN 3 FUSE IGNITION SWITCH LOCK OFF MAN A/C ORG/ WIRE PNK PNK WIRE PNK WIRE PPL RED WIRE RUN WIRE STOPLAMP SWITCH SWITCH TBC IGN 0 FUSE TRANSFER CASE SHIFT CONTROL SWITCH TRACTION CONTROL SWITCH TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) CRANK FUSE WHT WIRE YEL WIRE

A/T ISS SIG LOW VSS SIG LOW ALLISON TRANSMISSION BLK WIRE BLK/WHT WIRE BRK FUSE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM CRNK FUSE DATA BUS H DATA BUS L DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DRIVER SHIFT REQUEST SWITCH AUTOMATIC TRANSMISSION SHIFT LEVER FLD PRESS SW SIG 4 TCC PCS LOW FLD PRESS SW SIG 2 TURB SPEED SW SIG GRD GRD B+ GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, ACC, START I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) IGN 0 FUSE LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAIN MALFUNC IND LAMP MOD MAIN NCA WIRE ORG/ WIRE ORG/BLK WIRE ORG/WHT WIRE PNK 12 13 14 WIRE PNK FLD PRESS SW SIG 1 VSS SIG HIGH WIRE PNK IGN 0 VOLT WIRE PNK PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL PPL CRANK VOLT TORQUE SIG PPL PPL PPL PPL 1 2 PPL/WHT WIRE PRESS CONTROL SOLE 2 RANGE SW SIG A MAIN PRESS SOLENOID RED WIRE RED/BLK WIRE REQ TORQUE DATA BUS H RUN WIRE SERIAL DATA STOPLAMP SWITCH (ON BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC PSC TORQUE SIG PTO SIG TR SW SIG B TFT SENSOR SIG TR SW SIG C TR SW SIG P TRANSFER CASE) TURB SPEED SW UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) TCM B FUSE WHT WIRE YEL WIRE YEL/BLK WIRE

4.3L, 8.1L 4.3L: 10 GA- 4.8L, 5.3L, 6.0L ABS FUSE TBC BATT FUSE AUDIO AMPLIFIER AUXILIARY BATTERY RELAY (RIGHT REAR OF ENGINE COMPT) BATTERY (LEFT) BATTERY (RIGHT) 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 DATA LINK CONNECTOR DIGITAL RADIO RECEIVER DIGITAL RADIO RECEIVER REAR SEAT AUDIO (RSA) CONTROLLER ELECTRONIC BRAKE CONTROL MODULE BODY CONTROL MODULE EMERGENCY VEHICLE ROOF LAMP RELAY EVAPORATIVE EMISSION CANISTER VENT SOLENOID EXCEPT 4.3L EXCEPT LUXURY FUSE FUSIBLE LINK 1 FUSIBLE LINK 4 FUSIBLE LINK 5 FUSIBLE LINK 6 GENERATOR (4.3L, 8.1L) GENERATOR (4.8L, 5.3L, 6.0L) HD TRAILERING EQUIPMENT PROVISIONAL (BLUNT CUT) I/P JUNCTION BLOCK (RIGHT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN A FUSE STUD 2 FUSE IGN B FUSE STUD 1 FUSE LUXURY MEGA FUSE MOBILE RADIO FUSE BLOCK (RIGHT SIDE OF DASH) NCA WIRE NOT USED NOT USED ORG/ WIRE RADIO AMP FUSE RADIO FUSE REAR SEAT AUDIO (RSA) CONTROLLER RADIO RADIO RED WIRE RED/BLK WIRE RELAY RELAY/ FUSE RTD FUSE S/ROOF FUSE RR WPR FUSE EAP FUSE STARTER STARTER RELAY SUNROOF CONTROL MODULE (BEHIND RIGHT SIDE OF DASH, NEAR "A" PILLAR) TO IGNITION SWITCH (DIAGRAM 5 OF 6) TO IGNITION SWITCH (DIAGRAM 6 OF 6) TO IPC/DIC FUSE (DIAGRAM 2 OF 6) TRAILER CONNECTOR (7 WAY) UNDERHOOD COOLING FAN FUSE BLOCK (LEFT SIDE OF ENG COMPT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VSES/ ECAS FUSE FUSE W/ AUX BATTERY W/ WRECKER EMERGENCY LAMP WHEEL TRAILER WIRING PROVISIONAL (BLUNT CUT) WRECKER RELAY

AUTO A/C AUX PWR FUSE AUXILIARY POWER OUTLET (BIN) AUXILIARY POWER OUTLET (CONSOLE) AUXILIARY POWER OUTLET (FRONT) BLK WIRE BLOWER MOTOR CONTROL MODULE BLOWER MOTOR RESISTOR ASSEMBLY BLWR FUSE BREAKOUT) DEFOG RELAY ELECTRONIC BRAKE CONTROL MODULE EXCEPT LUXURY F/PMP RELAY RVC FUSE FROM RADIO FUSE (DIAGRAM 1 OF 6) FUSE GARAGE DOOR OPENER GENERATOR BATTERY CONTROL MODULE (10 SERIES) HVAC CONTROL MODULE HVAC/ECAS FUSE RR HVAC FUSE I/P JUNCTION BLOCK (RIGHT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFO FUSE INSTRUMENT PANEL CLUSTER IPC/DIC FUSE LH HID FUSE LUXURY MANUAL A/C NCA WIRE ORG/ WIRE OVERHEAD CONSOLE PCM B FUSE POWERTRAIN CONTROL MODULE REAR SEAT ENTERTAINMENT ASSEMBLY RED WIRE REMOTE PLAYBACK DEVICE (CD PLAYER) REAR SEAT ENTERTAINMENT ASSEMBLY RH HID FUSE ROOF BEACON RELAY ROOF BEACON SWITCH RR DEFOG FUSE STOP LP FUSE STOPLAMP SWITCH TCMB FUSE TO LBEC 1 FUSE (DIAGRAM 3 OF 6) TRANSFER CASE ENCODER MOTOR TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSION CONTROL MODULE (TCM) TREC FUSE VEHICLE COMMUNICATION INTERFACE MODULE WHT WIRE

A/C COMP FUSE A/C COMP RELAY BLK WIRE BODY CONTROL MODULE DDM FUSE DRIVER DOOR UNLOCK RELAY DRL FUSE DRL RELAY ECC/ TPM FUSE AUX PWR 2 M/GATE FUSE ETC/ECM FUSE EVAPORATIVE EMISSIONS (EVAP) CANISTER PURGE SOLENOID EXC BASE FOG LP FUSE FOG LP RELAY FROM MBEC 1 FUSE (DIAGRAM 3 OF 6) FROM PCM B FUSE (DIAGRAM 2 OF 6) FUEL PUMP RELAY (SECONDARY) (W/ DUAL TANKS) FUSE FUSE FUSE HAZRD FUSE HDLP LOW RELAY HDLP-HI RELAY HORN RELAY I/P JUNCTION BLOCK (RIGHT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 1 RELAY INTAKE AIR TEMPERATURE (IAT)/MASS AIRFLOW (MAF) SENSOR ASSEMBLY LBEC 1 FUSE LBEC 2 FUSE LOCK RELAY LT DOOR CIRCUIT BREAKER LUMBAR BOLSTER SWITCH (FRONT PASSENGER) MBEC 1 FUSE NON BUCKET BUCKET NOT USED NOT USED ORG/ WIRE PARK LP RELAY PASSENGER DOOR MODULE PCM 1 FUSE PDM FUSE LOCKS FUSE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE POWER TAKE OFF RELAY POWERTRAIN CONTROL MODULE FUEL COMPOSITION SENSOR RED WIRE RT DOORS CIRCUIT BREAKER SBA FUSE SEAT ADJUSTER SWITCH (DRIVER) MEMORY SEAT MODULE (DRIVER) SEAT ADJUSTER SWITCH (FRONT PASSENGER) SEATS CIRCUIT BREAKER SUPPLEMENTAL BRAKE ASSIST PUMP MOTOR THROTTLE ACTUATOR CONTROL MODULE (EXCEPT 4.3L) TIRE PRESSURE MONITOR (TPM) MODULE TO IGN 1 RELAY (DIAGRAM 3 OF 6) TO INJ 1 FUSE (DIAGRAM 4 OF 6) TO SEO IGN FUSE (DIAGRAM 6 OF 6) TURN SIGNAL/ HAZARD FLASHER MODULE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNLOCK RELAY W/S WASH FUSE W/S WASH RELAY WINDOW SWITCH (LEFT REAR) (CREW CAB) DRIVER DOOR MODULE WINDOW SWITCH (RIGHT REAR)

A/T SHIFT LEVER AUTOMATIC TRANSMISSION BODY CONTROL MODULE BRAKE FUSE BRN WIRE CRUISE CONTROL MODULE POWER TAKEOFF (PTO) SWITCH CRUISE CONTROL ON/OFF SWITCH CRUISE FUSE CRUISE PTO DRIVER SHIFT REQUEST SWITCH ELECTRONIC BRAKE CONTROL MODULE FRONT AXLE ACTUATOR FROM AUXILIARY BATTERY RELAY (DIAGRAM 1 OF 6) FROM IGN A FUSE (DIAGRAM 1 OF 6) FUSE HVAC 1 FUSE HTR/AC FUSE HVAC CONTROL MODULE I/P FUSE BLOCK (LEFT SIDE OF DASH, I/P JUNCTION BLOCK (BEHIND RIGHT SIDE OF DASH) IGN 0 FUSE IGN 3 FUSE IGNITION SWITCH LOCK OFF MAN A/C ORG/ WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE PPL RED WIRE RUN WIRE STOPLAMP SWITCH SWITCH TBC IGN 0 FUSE TRANSFER CASE SHIFT CONTROL SWITCH TRACTION CONTROL SWITCH TRANSMISSION TRANSMISSION CONTROL MODULE (TCM) TURN SIGNAL/ MULTIFUNCTION SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) CRANK FUSE WHT WIRE YEL WIRE