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

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)

ABS 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) BODY CONTROL MODULE BRN WIRE CIG LTR FUSE CIGAR LIGHTER DATA LINK CONNECTOR DIGITAL RADIO RECEIVER RADIO ELECTRONIC BRAKE CONTROL MODULE EMERGENCY VEHICLE ROOF LAMP RELAY EVAPORATIVE EMISSION CANISTER VENT SOLENOID EXCEPT LUXURY FUSE FUSIBLE LINK 1 FUSIBLE LINK 2 FUSIBLE LINK 3 (8 GA- FUSIBLE LINK 4 FUSIBLE LINK 5 FUSIBLE LINK 6 GENERATOR (LEFT) GENERATOR (RIGHT) GLOW PLUG CONTROL MODULE (GPCM) 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 IGN B FUSE STARTER RELAY INTAKE AIR HEATER (IAH) MODULE INTAKE AIR HEATER FUSE LUXURY MEGA FUSE MOBILE RADIO FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) NOT USED NOT USED ORG/ WIRE RADIO AMP FUSE RADIO FUSE REAR SEAT AUDIO (RSA) CONTROLLER REAR SEAT AUDIO (RSA) CONTROLLER DIGITAL RADIO RECEIVER RADIO RED WIRE RELAY RELAY/ FUSE RTD FUSE S/ROOF FUSE RR WPR FUSE EAP FUSE STARTER STUD 1 FUSE (OR STUD 2 FUSE SUNROOF CONTROL MODULE TBC BATT FUSE TO IGNITION SWITCH (DIAGRAM 5 OF 5) TO IGNITION SWITCH (DIAGRAM 4 OF 5) TRAILER CONNECTOR (7 WAY) 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 ECM B FUSE TO ECM RELAY (DIAGRAM 3 OF 5) ELECTRONIC BRAKE CONTROL MODULE ENGINE CONTROL MODULE (ECM) EXCEPT LUXURY F/PMP RELAY FROM RADIO FUSE (DIAGRAM 1 OF 5) FUSE GARAGE DOOR OPENER HVAC CONTROL MODULE HVAC/ECAS 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 RH HID FUSE LUXURY MANUAL A/C NCA WIRE NOT USED NOT USED ORG/ WIRE OVERHEAD CONSOLE REAR SEAT ENTERTAINMENT ASSEMBLY RED WIRE REMOTE PLAYBACK DEVICE (CD PLAYER) REAR SEAT ENTERTAINMENT ASSEMBLY ROOF BEACON RELAY ROOF BEACON SWITCH RR DEFOG FUSE RR HVAC FUSE STOP LP FUSE STOPLAMP SWITCH TCM B FUSE TO LBEC 1 FUSE (DIAGRAM 3 OF 5) TRANSFER CASE ENCODER MOTOR TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSION CONTROL MODULE (TCM) TREC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE COMMUNICATION INTERFACE MODULE

A/C COMP FUSE A/C COMP RELAY ACTUATOR FUSE BLK WIRE BODY CONTROL MODULE DDM FUSE DRIVER DOOR UNLOCK RELAY DRL FUSE DRL RELAY ECC/ TPM FUSE AUX PWR 2 M/GATE FUSE ECM FUSE ECM RELAY ENGINE CONTROL MODULE EXC BASE FOG LP FUSE FOG LP RELAY FROM BLWR FUSE (DIAGRAM 2 OF 5) FROM ECM B FUSE (DIAGRAM 2 OF 5) 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) 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 PDM FUSE LCKS FUSE PNK PNK WIRE PNK WIRE POWER TAKE OFF RELAY RED WIRE RT DOORS CIRCUIT BREAKER SEAT ADJUSTER SWITCH (DRIVER) MEMORY SEAT MODULE (DRIVER) SEAT ADJUSTER SWITCH (FRONT PASSENGER) SEATS CIRCUIT BREAKER TIRE PRESSURE MONITOR (TPM) MODULE 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)

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

ALLISON TRANSMISSION B/U LMP VLT BATTERY BLK WIRE BLUNT CUT (W/ CAMPER BODY CONTROL MODULE (BCM) (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) COMPUTER DATA LINES SYSTEM DIESEL ENGINE CONTROL MODULE (AT LEFT FRONT OF ENGINE COMPT) FUSE GRN WIRE GRY WIRE GRY/BLK WIRE HARNESS) HOT AT ALL TIMES I/P FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) LEFT BACK-UP LAMP LT BACK-UP ALARM LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE PRESS SW PRESSURE SWITCH MANIFOLD REAR LAMPS JUNCTION BLOCK (INSIDE LEFT FRAME RAIL) REV SIG RIGHT BACK-UP LAMP SERIAL DATA TRAILER CONNECTOR TRAILER WIRING PROVISIONAL) TRANSMISSION CONTROL MODULE (AT LEFT FRONT OF ENGINE COMPT) TRLR B/U FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT) YEL WIRE

B/U LMP VLT B/U LMPS SIG B/U LP FUSE BLK WIRE BLUNT CUT (W/ CAMPER BODY CONTROL MODULE (BCM) (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) DIESEL ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENG COMPT) GRN WIRE GRY WIRE GRY/BLK WIRE HARNESS) HOT IN RUN OR START LEFT BACK-UP LAMP RIGHT BACK-UP LAMP LT BACK-UP ALARM LT GRN WIRE PARK/NEUTRAL POSITION (PNP) SWITCH (LEFT SIDE OF TRANSMISSION) PNK A/T WIRE PNK M/T WIRE PNK WIRE REAR LAMPS JUNCTION BLOCK (INSIDE LEFT FRAME RAIL) TRAILER CONNECTOR TRAILER WIRING PROVISIONAL) TRLR B/U FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT)

1827 121 1020 2500 822 ANTI-LOCK BRAKES SYSTEM 23 1786 420 STARTING/ CHARGING SYSTEM 3 4 PNK WIRE 439 1320 25 2524 EXTERIOR LIGHTS SYSTEM STARTING/ CHARGING SYSTEM 5764 470 380 1589 INSTRUMENT CLUSTER SYSTEM 6-SPEED M/T 5-SPEED A/T A/C SYSTEM A/C SYSTEM INSTRUMENT CLUSTER SYSTEM ALLISON TRANSMISSION BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CLASS 2 SERIAL COMPUTER DATA LINES SYSTEM DATA BUS - VSS SIG DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EGR MOTOR HIGH LOW REF A/C REFRIG SIG FUEL LEVEL SENSOR SIG ENGINE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) FUEL PUMP LOW REF FUSE GENERATOR SIG PARK/NEUTRAL SIG TCC BRAKE SIG GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES IND INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL CLUSTER INTERNAL MODE SWITCH IPC/DIC FUSE LOW REF MIL CONTROL A/C COMPRESS LT BLU WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE ORG/BLK WIRE PNK IGN 1 + CHMSL + CHARGE IND GENERATOR 2 SIG WIRE PNK PNK WIRE PNK WIRE PPL PPL 5 6 7 8 PPL PTO CONTROL ECM RELAY PPL/BLK WIRE PPL/WHT WIRE RED/BLK WIRE RPM OUT TAN WIRE TRANSMISSION CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE SPEED SENSOR (LEFT REAR SIDE OF TRANS) VEHICLE SPEED SIG VEHICLE SPEED SIG ENG SPEED SIG IGN 0 + DATA BUS + VSS LOW SIG WAIT TO WAIT TO START WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE