GMC Sierra 2500 (2000-2004) blk Wiring diagrams

ABS FUSE AUDIO AMPLIFIER AUXILIARY BATTERY RELAY (RIGHT REAR OF ENGINE COMPT) BATTERY (LEFT) BATTERY (RIGHT) BATTERY (RIGHT) (W/AUX BATTERY) BLK WIRE BLUNT CUT) BODY CONTROL MODULE BRN WIRE CIG LTR FUSE CIGAR LIGHTER DATA LINK CONNECTOR DIGITAL RADIO RECEIVER RADIO DIGITAL RADIO RECEIVER REAR SEAT AUDIO (RSA) CONTROLLER DUAL GENERATOR ELECTRONIC BRAKE CONTROL MODULE EMERGENCY VEHICLE ROOF LAMP RELAY EVAPORATIVE EMISSIONS CANISTER VENT SOLENOID EXCEPT LUXURY EXCEPT LUXURY EXCEPT LUXURY FROM FUSE FUSE HOLDER FUSE HOLDER AUX BATT FUSE FUSIBLE LINK GENERATOR (LEFT) GENERATOR (RIGHT) I/P RELAY BLOCK (LEFT OF STEERING COLUMN) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN A FUSE IGN B FUSE LUXURY MINI FUSE MOBILE RADIO MOBILE RADIO FUSE MOBILE RADIO FUSE BLOCK MOBILE RADIO RELAY NCA WIRE NOT USED NOT USED ORG/ WIRE RADIO AMP FUSE RADIO FUSE REAR SEAT AUDIO (RSA) CONTROLLER (CREW CAB) RADIO REAR WHEEL STEERING REAR WHEEL STEERING CONTROL MODULE REAR WHEEL STEERING FUSE RED WIRE RR WIPER FUSE EAP FUSE RTD FUSE STARTER STARTER RELAY STUD 1 FUSE STUD 2 FUSE SUNROOF FUSE TBC BATT FUSE TO IGNITION SWITCH (DIAGRAM 5 OF 6) TO IGNITION SWITCH (DIAGRAM 6 OF 6) TRAILER CONNECTOR TRAILER TOW (BLUNT CUT) UNDERHOOD JUNCTION BLOCK UPFITTER OPTION VSES/ ECAS FUSE W/AUX BATTERY W/DUAL BATTERIES WHT WIRE WRECKER RELAY

AUX PWR FUSE AUXILIARY POWER OUTLET (BIN) AUXILIARY POWER OUTLET (CONSOLE) AUXILIARY POWER OUTLET (FRONT) BLK WIRE BLOWER FUSE BLOWER MOTOR RESISTOR ASSEMBLY DEFOG RELAY EXCEPT LUXURY F/PMP RELAY FROM RADIO FUSE (DIAGRAM 1 OF 6) FUSE GARAGE DOOR OPENER HVAC CONTROL MODULE HVAC/ECAS FUSE I/P RELAY BLOCK (LEFT OF STEERING COLUMN) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFO FUSE INSTRUMENT PANEL CLUSTER IPC/DIC FUSE LH HID FUSE RH HID FUSE LUXURY NCA WIRE NOT USED NOT USED ORG/ WIRE OVERHEAD CONSOLE PCM B FUSE POWERTRAIN CONTROL MODULE REAR SEAT ENTERTAINMENT ASSEMBLY RED WIRE REMOTE PLAYBACK DEVICE (CD PLAYER) RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) ROOF BEACON RELAY ROOF BEACON SWITCH RR DEFOG FUSE RR HVAC FUSE STOP LP FUSE STOPLAMP SWITCH TO LBEC 1 FUSE (DIAGRAM 3 OF 6) TRANSFER CASE ENCODER MOTOR TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSION CONTROL MODULE TREC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE COMMUNICATION INTERFACE MODULE

A/C COMP FUSE A/C COMP RELAY BLK WIRE BODY CONTROL MODULE DDM FUSE DRIVER DOOR UNLOCK RELAY DRL FUSE DRL RELAY ECC FUSE AUX PWR 2 FUSE ETC/ECM FUSE EVAPORATIVE EMISSIONS (EVAP) CANISTER PURGE SOLENOID EXC BASE FLASH FUSE FOG LP FUSE FOG LP RELAY FROM MBEC 1 FUSE (DIAGRAM 3 OF 6) FROM PCM B FUSE (DIAGRAM 2 OF 6) FROM SEO IGN FUSE (DIAGRAM 6 OF 6) FRONT PASSENGER DOOR MODULE SEAT ADJUSTER SWITCH (DRIVER) FUEL PUMP RELAY (SECONDARY) FUSE FUSE FUSE HDLP LOW RELAY HDLP-HI RELAY HORN RELAY 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 DOORS CIRCUIT BREAKER LUMBAR BOLSTER SWITCH (FRONT PASSENGER) MBEC 1 FUSE MEMORY SEAT MODULE ORG/ WIRE PARK LP RELAY PCM 1 FUSE PDM FUSE LOCKS FUSE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE FUEL COMPOSITION SENSOR RED WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RT DOOR CIRCUIT BREAKER SBA FUSE SEAT ADJUSTER SWITCH (FRONT PASSENGER) SEAT CIRCUIT BREAKER SUPPLEMENTAL BRAKE ASSIST PUMP MOTOR THROTTLE ACTUATOR CONTROL MODULE (8.1L) TO IGN 1 RELAY (DIAGRAM 3 OF 6) TO INJ 1 FUSE (DIAGRAM 4 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 (RIGHT) (W/AUX BATTERY) BLK WIRE BLUNT CUT) BODY CONTROL MODULE BRN WIRE CIG LTR FUSE CIGAR LIGHTER DATA LINK CONNECTOR DIGITAL RADIO RECEIVER RADIO DIGITAL RADIO RECEIVER REAR SEAT AUDIO (RSA) CONTROLLER DUAL GENERATOR ELECTRONIC BRAKE CONTROL MODULE EMERGENCY VEHICLE ROOF LAMP RELAY EVAPORATIVE EMISSIONS CANISTER VENT SOLENOID EXCEPT LUXURY EXCEPT LUXURY EXCEPT LUXURY FROM FUSE FUSE HOLDER FUSE HOLDER AUX BATT FUSE FUSIBLE LINK GENERATOR (LEFT) GENERATOR (RIGHT) I/P RELAY BLOCK (LEFT OF STEERING COLUMN) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN A FUSE IGN B FUSE LUXURY MINI FUSE MOBILE RADIO MOBILE RADIO FUSE MOBILE RADIO FUSE BLOCK MOBILE RADIO RELAY NCA WIRE NOT USED NOT USED ORG/ WIRE RADIO AMP FUSE RADIO FUSE REAR SEAT AUDIO (RSA) CONTROLLER (CREW CAB) RADIO REAR WHEEL STEERING REAR WHEEL STEERING CONTROL MODULE REAR WHEEL STEERING FUSE RED WIRE RR WIPER FUSE EAP FUSE RTD FUSE STARTER STARTER RELAY STUD 1 FUSE STUD 2 FUSE SUNROOF FUSE TBC BATT FUSE TO IGNITION SWITCH (DIAGRAM 5 OF 6) TO IGNITION SWITCH (DIAGRAM 6 OF 6) TRAILER CONNECTOR TRAILER TOW (BLUNT CUT) UNDERHOOD JUNCTION BLOCK UPFITTER OPTION VSES/ ECAS FUSE W/AUX BATTERY W/DUAL BATTERIES WHT WIRE WRECKER RELAY

AUX PWR FUSE AUXILIARY POWER OUTLET (BIN) AUXILIARY POWER OUTLET (CONSOLE) AUXILIARY POWER OUTLET (FRONT) BLK WIRE BLOWER FUSE BLOWER MOTOR RESISTOR ASSEMBLY DEFOG RELAY EXCEPT LUXURY F/PMP RELAY FROM RADIO FUSE (DIAGRAM 1 OF 6) FUSE GARAGE DOOR OPENER HVAC CONTROL MODULE HVAC/ECAS FUSE I/P RELAY BLOCK (LEFT OF STEERING COLUMN) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INFO FUSE INSTRUMENT PANEL CLUSTER IPC/DIC FUSE LH HID FUSE RH HID FUSE LUXURY NCA WIRE NOT USED NOT USED ORG/ WIRE OVERHEAD CONSOLE PCM B FUSE POWERTRAIN CONTROL MODULE REAR SEAT ENTERTAINMENT ASSEMBLY RED WIRE REMOTE PLAYBACK DEVICE (CD PLAYER) RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) ROOF BEACON RELAY ROOF BEACON SWITCH RR DEFOG FUSE RR HVAC FUSE STOP LP FUSE STOPLAMP SWITCH TO LBEC 1 FUSE (DIAGRAM 3 OF 6) TRANSFER CASE ENCODER MOTOR TRANSFER CASE SHIFT CONTROL MODULE TRANSMISSION CONTROL MODULE TREC FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) VEHICLE COMMUNICATION INTERFACE MODULE

A/C COMP FUSE A/C COMP RELAY BLK WIRE BODY CONTROL MODULE DDM FUSE DRIVER DOOR UNLOCK RELAY DRL FUSE DRL RELAY ECC FUSE AUX PWR 2 FUSE ETC/ECM FUSE EVAPORATIVE EMISSIONS (EVAP) CANISTER PURGE SOLENOID EXC BASE FLASH FUSE FOG LP FUSE FOG LP RELAY FROM MBEC 1 FUSE (DIAGRAM 3 OF 6) FROM PCM B FUSE (DIAGRAM 2 OF 6) FROM SEO IGN FUSE (DIAGRAM 6 OF 6) FRONT PASSENGER DOOR MODULE SEAT ADJUSTER SWITCH (DRIVER) FUEL PUMP RELAY (SECONDARY) FUSE FUSE FUSE HDLP LOW RELAY HDLP-HI RELAY HORN RELAY 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 DOORS CIRCUIT BREAKER LUMBAR BOLSTER SWITCH (FRONT PASSENGER) MBEC 1 FUSE MEMORY SEAT MODULE ORG/ WIRE PARK LP RELAY PCM 1 FUSE PDM FUSE LOCKS FUSE PNK PNK PNK WIRE PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE FUEL COMPOSITION SENSOR RED WIRE RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RT DOOR CIRCUIT BREAKER SBA FUSE SEAT ADJUSTER SWITCH (FRONT PASSENGER) SEAT CIRCUIT BREAKER SUPPLEMENTAL BRAKE ASSIST PUMP MOTOR THROTTLE ACTUATOR CONTROL MODULE (8.1L) TO IGN 1 RELAY (DIAGRAM 3 OF 6) TO INJ 1 FUSE (DIAGRAM 4 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)

BACK BLK WIRE CREW DK BLU WIRE DK GRN WIRE DRIVER SEAT ADJUSTER SWITCH DRIVER SEAT FRONT VERTICAL MOTOR DRIVER SEAT HORIZONTAL MOTOR DRIVER SEAT REAR VERTICAL MOTOR EXCEPT CREW CAB CAB FRONT DN FRONT UP HOT AT ALL TIMES I/P RELAY BLOCK LT BLU WIRE LT GRN WIRE ORG/ WIRE REAR DN REAR UP RED WIRE SEATS CIRCUIT BREAKER TAN WIRE YEL WIRE

BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, NEAR STEERING COLUMN) DK BLU WIRE DRIVER DOOR LOCK ACTUATOR DRIVER DOOR LOCK SWITCH DRIVER UNLOCK RELAY FRONT PASSENGER DOOR LOCK ACTUATOR FRONT PASSENGER DOOR LOCK SWITCH GASOLINE DIESEL GRY WIRE HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGNITION KEY ALARM SWITCH (ON IGNITION KEY CYLINDER) INSTRUMENT PANEL CLUSTER LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR DOOR LOCK ACTUATOR LOCK LOCK RELAY LOCKS FUSE LT BLU WIRE LT GRN WIRE ORG/ WIRE PCM ECM (LEFT FRONT OF ENGINE COMPARTMENT) RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT REAR DOOR LOCK ACTUATOR SERIAL DATA SPLICE PACK TAN WIRE UNLOCK UNLOCK CTRL LOCK CTRL IGN KEY SW UNLOCK CTRL LOCK CTRL RELAY CTRL BATTERY SERIAL DATA UNLOCK RELAY W/ CREW CAB WHT WIRE YEL WIRE

10 11 14 22 LOCK CTRL UNLOCK CTRL BATTERY SERIAL DATA BLK WIRE BLK/WHT WIRE BRN WIRE DK BLU WIRE DRIVER DOOR MODULE (INSIDE DRIVER DOOR) FRONT PASSENGER DOOR MODULE (INSIDE RIGHT FRONT PASSENGER DOOR) GROUND GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES I/P RELAY BLOCK (BEHIND LEFT SIDE OF DASH) IGNITION KEY ALARM SWITCH (ON IGNITION KEY CYLINDER) KEY SW KEY SW SIG UNLOCK CTRL LOCK CTRL SERIAL DATA LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR DOOR LOCK ACTUATOR LOCK LOCK RELAY LOCKS FUSE LT GRN WIRE ORG/ WIRE PCM ECM (LEFT FRONT OF ENGINE COMPARTMENT) (GASOLINE) (DIESEL) PDM FUSE RIGHT I/P FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT REAR DOOR LOCK ACTUATOR SERIAL DATA TAN WIRE TAN/BLK WIRE UNLOCK CTRL LOCK CTRL BATTERY SERIAL DATA UNLOCK DOOR LOCK SWITCH UNLOCK RELAY YEL WIRE

2 3 1340 1050 BATTERY GROUND 22 14 1046 4140 CLASS 2 SERIAL DATA BATTERY 22 14 1047 4240 CLASS 2 SERIAL DATA BATTERY 4 2 1050 1240 GROUND BATTERY 8 7 4 3 PNK LOW REF MIR SIGNAL MIR SENS LOW REF MIR HTR LOW REF WIRE BLK WIRE BRN WIRE CLASS 2 SERIAL DATA COMPUTER DATA LINES SYSTEM DDM FUSE DK BLU WIRE DK GRN WIRE DOWN DRIVER DOOR MODULE (IN DRIVER'S DOOR) DRIVER MIRROR DRIVER OUTSIDE REARVIEW MIRROR ELECTRO- CHROMIC FOLDING/ TELESCOPING MOTOR FOLDING/ TELESCOPING MOTOR HORIZONTAL FRONT PASSENGER OUTSIDE REARVIEW MIRROR FRONT PASSENGER DOOR MODULE (IN RIGHT FRONT DOOR) GRY WIRE HEATING ELEMENT HEATING ELEMENT (NEAR RIGHT "A" PILLAR) HOT AT ALL TIMES HOT AT ALL TIMES LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) HVAC CONTROL MODULE (IN CENTER OF DASH) I/P RELAY BLOCK (NEAR LEFT KICK PANEL) LEFT LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT UP HORIZONTAL LEFT UP VERTICAL LT BLU WIRE LT DOORS CIRCUIT BREAKER LT GRN WIRE ORG/ WIRE PASS- ENGER MIRROR PDM FUSE PNK WIRE PPL PPL/WHT WIRE RED WIRE RIGHT RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RT DOOR CIRCUIT BREAKER SWITCH POWER TAN WIRE VERTICAL WHT WIRE WHT/RED WIRE YEL WIRE