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

8.1L ANTI-LOCK BRAKE SYSTEM AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) BATTERY BATTERY CABLE JUNCTION BLOCK (NEAR LEFT SIDE OF ENG) BATTERY NOT CHARGING BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CONTROL CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DRIVER INFO CENTER EXCEPT 8.1L FUSE BLOCK MOBILE RADIO (UPFITTER OPTION) FUSIBLE LINK 1 (8 GA- FUSIBLE LINK 4 (14 GA- GRAY) FUSIBLE LINK 5 (10 GA- FUSIBLE LINK 6 (10 GA- GENERATOR B+ GENERATOR FIELD DUTY CYCLE SIGNAL GROUND GRY WIRE HOT IN RUN, START I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 1 VOLT IGN E FUSE INSTRUMENT PANEL CLUSTER LEFT BATTERY LOGIC MEGA FUSE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPARTMENT) RED WIRE RIGHT BATTERY RIGHT BATTERY (W/AUX BATTERY) SEO IGN FUSE SERIAL DATA CLASS 2 STARTER UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT) VOLTS W/ SEO W/AUX BATTERY W/DUAL BATTERIES W/O SEO WRECKER OPTION

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

AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) BATTERY BATTERY NOT CHARGING BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CONTROL CLASS 2 SERIAL DATA COMPUTER DATA LINES DK GRN WIRE DRIVER INFO CENTER DUAL GENERATORS ENGINE CONTROL MODULE (ECM) (ON LEFT FRONT OF ENGINE COMPARTMENT) ENGINE CONTROLS SYSTEM FUSE BLOCK MOBILE RADIO (UPFITTER OPTION) FUSIBLE LINK 1 (8 GA- FUSIBLE LINK 2 (8 GA- FUSIBLE LINK 4 (14 GA- GRAY) FUSIBLE LINK 5 (10 GA- FUSIBLE LINK 6 (10 GA- GENERATOR 2 GENERATOR FIELD DUTY CYCLE SIGNAL GROUND GRY WIRE HOT IN RUN, START I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 1 VOLT IGN E FUSE INSTRUMENT PANEL CLUSTER JUNCTION BLOCK - BATTERY CABLE (AT LEFT SIDE OF ENG COMPT, NEAR BATTERY) LEFT BATTERY LEFT GENERATOR LOGIC MEGA FUSE PNK WIRE POWER DISTRIBUTION SYSTEM RED WIRE RIGHT BATTERY RIGHT BATTERY (W/AUX BATTERY) RIGHT GENERATOR SEO IGN FUSE SERIAL DATA CLASS 2 STARTER UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT) VOLTS W/ SEO W/AUX BATTERY W/DUAL BATTERIES W/O SEO WRECKER OPTION

8.1L ANTI-LOCK BRAKE SYSTEM AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) BATTERY BATTERY CABLE JUNCTION BLOCK (NEAR LEFT SIDE OF ENG) BATTERY NOT CHARGING BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CONTROL CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DRIVER INFO CENTER EXCEPT 8.1L FUSE BLOCK MOBILE RADIO (UPFITTER OPTION) FUSIBLE LINK 1 (8 GA- FUSIBLE LINK 4 (14 GA- GRAY) FUSIBLE LINK 5 (10 GA- FUSIBLE LINK 6 (10 GA- GENERATOR B+ GENERATOR FIELD DUTY CYCLE SIGNAL GROUND GRY WIRE HOT IN RUN, START I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN 1 VOLT IGN E FUSE INSTRUMENT PANEL CLUSTER LEFT BATTERY LOGIC MEGA FUSE PNK WIRE POWER DISTRIBUTION SYSTEM POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPARTMENT) RED WIRE RIGHT BATTERY RIGHT BATTERY (W/AUX BATTERY) SEO IGN FUSE SERIAL DATA CLASS 2 STARTER UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT) VOLTS W/ SEO W/AUX BATTERY W/DUAL BATTERIES W/O SEO WRECKER OPTION

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

A/C COMP RELAY A/T M/T AIRBAG FUSE B/U LP FUSE BODY CONTROL MODULE BRN WIRE CLUTCH PEDAL POSITION SWITCH (M/T) DEFOG RELAY EXC 8.1L W/O CALIFORNIA LEV FROM IGN 1 RELAY (DIAGRAM 3 OF 6) FROM IGN B FUSE (DIAGRAM 1 OF 6) FUSE HEATED OXYGEN SENSOR BANK 1 SENSOR 1 HEATED OXYGEN SENSOR BANK 1 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 2 HEATED OXYGEN SENSOR BANK 2 SENSOR 1 I/P FUSE BLOCK (BEHIND LEFT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN E FUSE IGNITION SWITCH INFLATABLE RESTRAINT I/P MODULE DISABLE SWITCH INSTRUMENT PANEL CLUSTER TURN SIGNAL/ MULTIFUNCTION SWITCH LOCK OFF MOBILE RADIO FUSE BLOCK (UPFITTER OPTION) NCA WIRE PARK/NEUTRAL POSITION SWITCH (A/T) BACKUP LAMP SWITCH PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE RED WIRE RELAY RELAY RR WPR FUSE RUN WIRE SELECTABLE RIDE SWITCH INSTRUMENT PANEL CLUSTER SEO ACCY FUSE SEO IGN FUSE TBC ACCY FUSE TBC IGN 1 FUSE TURN SIGNAL/ MULTIFUNCTION SWITCH WINDSHIELD WIPER MOTOR MODULE WS WPR FUSE YEL WIRE

71 39 7 59 9 58 (DIESEL) (GASOLINE) ALLISON A/T BLK WIRE BLK/WHT WIRE CHARGING CIRCUIT CLUTCH PEDAL POSITION SWITCH (M/T) (TOP OF CLUTCH PEDAL ASSEMBLY) COMPARTMENT) COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM CRANK FUSE DIESEL DIESEL 8.1L STARTER MOTOR DIESEL GASOLINE A/T EXCEPT ALLISON PNK PNK WIRE DK GRN WIRE ENGINE CONTROLS SYSTEM (DIESEL) EXCEPT A/T EXCEPT DIESEL EXCEPT GASOLINE FUSE BLOCK MOBILE RADIO (UPFITTER OPTION) FUSIBLE LINK 3 (8 GA- FUSIBLE LINK 4 (14 GA- GRAY) GASOLINE GASOLINE DIESEL GASOLINE EXCEPT 8.1L GLOW PLUG CONTROL MODULE GRN WIRE IGN A FUSE IGN B FUSE IGN E FUSE IGNITION SWITCH INSTRUMENT PANEL CLUSTER JUNCTION BLOCK - BATTERY CABLE (NEAR LEFT SIDE OF ENG COMPT) LEFT BATTERY LOCK OFF M/T MEGA FUSE MEGA FUSE PARK/ NEUTRAL POSITION SWITCH (ON LEFT SIDE OF TRANS) PNK 739 639 WIRE PNK PPL PNK PNK WIRE PNK WIRE POWER DISTRIBUTION SYSTEM (WRECKER/AUXILIARY BATTERY OPTION) PPL PPL 43 49 806 2470 CRANK VOLT SER DATA RED WIRE RUN WIRE STARTER RELAY STARTER SOLENOID RIGHT BATTERY TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENG COMPT) UNDER- HOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT) UNDERHOOD FUSE BLOCK (AT LEFT SIDE ENG COMPT) W/ ALLISON A/T W/ ALLISON A/T A/T EXCEPT ALLISON YEL WIRE YEL/BLK WIRE