GMC Sierra 2500 (2000-2004) body wiring harness junction block Wiring diagrams

1 2 6 8 16 19 20 21 24 40 42 46 47 48 51 62 63 GND TCC PWM PC SOL HI PC SOL LO 1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 3-2 CTRL SOLENOID 407 (OR 720) A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION BLK (OR GRY) WIRE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY WIRING HARNESS JUNCTION BLOCK BRAKE FUSE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE ECMB FUSE ENGINE COOLANT TEMPERATURE SENSOR (LEFT FRONT OF CYLINDER HEAD) ENGINE WIRING HARNESS JUNCTION BLOCK EX CAN BUILT CANADIAN BUILT FLUID TEMP SENSOR FRT AXLE SW VSS LO (GROUND) VSS HI (SIGNAL) FUSE FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, BULB TEST, START HOT IN RUN, START INSTRUMENT CLUSTER LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MALFUNCTION INDICATOR LAMP ORG/ WIRE PARK/NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK PNK WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF ENGINE COMPT) PPL PPL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL/WHT WIRE PRESS CTRL SOLENOID RED WIRE RED/BLK WIRE REV, LO RUN WIRE SENS GND B+ CLS 2 DATA CLS 2 DATA SENS GND PRND B ECT SIG IGN 3-2 SS SPLICE PACK STOPLIGHT SWITCH (TOP OF BRAKE PEDAL BRACKET) TAN WIRE TAN/BLK WIRE TCC PWM SOLENOID TCC SOLENOID THROTTLE POSITION SENSOR (ON THROTTLE BODY ASSY) TP SIG GND TCC SOL MIL CTRL 2-3 SS 1-2 SS TFT SENS SIG PRND C TRANS RNG A VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VSS ADAPTER W/ TRACTION W/O TRACTION WHT WIRE YEL WIRE YEL/BLK WIRE

4-DOOR 2-DOOR B/U LPS FUSE BACK BLK WIRE BODY WIRING HARNESS JUNCTION BLOCK BRN WIRE BTSI FUSE DRIVER POWER SEAT SWITCH ENGINE WIRING HARNESS JUNCTION BLOCK FORWARD/ REARWARD MOTOR FRONT TILT MOTOR FRT DN FRT UP FUSE BLOCK HOT AT ALL TIMES HOT IN RUN HOT IN RUN OR START IGN IGN 3 FUSE LEFT POWER WINDOW/ DOOR LOCK SWITCH LT GRN WIRE LT GRN/BLK WIRE MEMORY SEAT MODULE (UNDERSIDE OF DRIVER'S SEAT) MEMORY SEAT SWITCH MIR/LOCK FUSE NCA WIRE ORG/ WIRE PARK SW IN PARK/ NEUTRAL POSITION SWITCH (LEFT SIDE OF TRANSMISSION) PNK WIRE PPL RCL 1 RCL 1 SW RCL 2 RCL 2 SW RCL BACK RCL FWD REAR DN REAR TILT MOTOR REAR UP RECLINER MOTOR SEATS CIRCUIT BREAKER SET SW SET- SHIFT INTERLOCK SYSTEM WHT WIRE

2-HI IND 4-HI IND 4-LO IND 4.3L 4.8L, 5.3L, 6.0L ATC FUSE AUTO AUXILIARY BATTERY RELAY AWD IND B+ MOTOR (CCW) MOTOR (CW) GND BLK WIRE BLK/WHT WIRE BODY WIRING HARNESS JUNCTION BLOCK BRAKE CONTROL BRN WIRE BRN/WHT WIRE CONTROL MODULE CTRL DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENCODER MOTOR ENCODER RTN ENGINE WIRING HARNESS JUNCTION BLOCK FRONT AXLE ACTUATOR/ SWITCH FRONT PROP- SHAFT SPEED SENSOR FT SHAFT SIG FT SHAFT RTN FUSE FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, START ILLUMINATION LAMP (2) INDICATOR LAMP INSTRUMENT CLUSTER LOCK SOL OUT LOGIC LT BLU WIRE LT GRN/BLK WIRE MODULE GND 4-LO IND 4-HI IND NEUTRAL IND FT AXLE CTRL RR SHAFT SIG RR SHAFT RTN NCA WIRE NEUTRAL IND ORG/ WIRE PNK WIRE PPL PPL/WHT WIRE REAR PROP- SHAFT SPEED SENSOR ENCODER LOGIC RED WIRE RED/WHT WIRE REF RUN WIRE SHIFT MOTOR SOLID STATE SPLICE PACK TAN WIRE TAN/BLK WIRE TRANSFER CASE SELECT SWITCH YEL WIRE YEL/BLK WIRE

2-HI IND 4-HI IND 4-LO IND 4.3L 4.8L, 5.3L, 6.0L ATC FUSE AUTO AUXILIARY BATTERY RELAY AWD IND B+ MOTOR (CCW) MOTOR (CW) GND BLK WIRE BLK/WHT WIRE BODY WIRING HARNESS JUNCTION BLOCK BRAKE CONTROL BRN WIRE BRN/WHT WIRE CONTROL MODULE CTRL DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE ENCODER MOTOR ENCODER RTN ENGINE WIRING HARNESS JUNCTION BLOCK FRONT AXLE ACTUATOR/ SWITCH FRONT PROP- SHAFT SPEED SENSOR FT SHAFT SIG FT SHAFT RTN FUSE FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, START ILLUMINATION LAMP (2) INDICATOR LAMP INSTRUMENT CLUSTER LOCK SOL OUT LOGIC LT BLU WIRE LT GRN/BLK WIRE MODULE GND 4-LO IND 4-HI IND NEUTRAL IND FT AXLE CTRL RR SHAFT SIG RR SHAFT RTN NCA WIRE NEUTRAL IND ORG/ WIRE PNK WIRE PPL PPL/WHT WIRE REAR PROP- SHAFT SPEED SENSOR ENCODER LOGIC RED WIRE RED/WHT WIRE REF RUN WIRE SHIFT MOTOR SOLID STATE SPLICE PACK TAN WIRE TAN/BLK WIRE TRANSFER CASE SELECT SWITCH YEL WIRE YEL/BLK WIRE

4.3L 4.8L, 5.3L, 6.0L 1694 1695 AUXILIARY BATTERY RELAY, VEHICLE CONTROL MODULE (4.3L) BLK WIRE BLK/WHT WIRE BODY WIRING HARNESS JUNCTION BLOCK BRN WIRE DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (ON LEFT SIDE OF INNER FRAME) ENGINE COMPT) ENGINE WIRING HARNESS JUNCTION BLOCK FRONT AXLE ACTUATOR/ SWITCH FUSE FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT IN HOT IN RUN, START INDICATOR LAMP INSTRUMENT CLUSTER LOGIC LT BLU WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF PPL RUN WIRE SPLICE PACK TRANSFER CASE SWITCH (TOP LEFT OF TRANSFER CASE) VEHICLE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT)

4.3L 4.8L, 5.3L, 6.0L 1694 1695 AUXILIARY BATTERY RELAY, VEHICLE CONTROL MODULE (4.3L) BLK WIRE BLK/WHT WIRE BODY WIRING HARNESS JUNCTION BLOCK BRN WIRE DK GRN WIRE ELECTRONIC BRAKE CONTROL MODULE (ON LEFT SIDE OF INNER FRAME) ENGINE COMPT) ENGINE WIRING HARNESS JUNCTION BLOCK FRONT AXLE ACTUATOR/ SWITCH FUSE FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT IN HOT IN RUN, START INDICATOR LAMP INSTRUMENT CLUSTER LOGIC LT BLU WIRE PNK WIRE POWERTRAIN CONTROL MODULE (LEFT FRONT OF PPL RUN WIRE SPLICE PACK TRANSFER CASE SWITCH (TOP LEFT OF TRANSFER CASE) VEHICLE CONTROL MODULE (LEFT FRONT OF ENGINE COMPT)

1-2 SOL 2 3 4 PPL 2-3 SOL 28 29 30 PNK WIRE A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSAXLE BLK WIRE BLU WIRE BODY WIRING HARNESS JUNCTION BLOCK BRAKE FUSE BRN WIRE BRN/RED WIRE CAMSHAFT POSITION SENSOR (TOP CENTER REAR OF ENGINE) CLUTCH PEDAL POSITION SWITCH (TOP OF PEDAL BRACKET) DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE EVAP CANISTER PURGE VALVE (TOP RIGHT REAR OF ENGINE) EVAP CANISTER VENT VALVE (LEFT FRONT SIDE OF FUEL TANK) EXHAUST GAS RECIRCULATION VALVE (TOP RIGHT FRONT OF ENGINE) FUEL TANK PRESSURE SENSOR (IN FUEL TANK) FUSE BLOCK GRY DK GRN WIRE GRY WIRE HOT IN RUN HOT IN RUN, START LT BLU WIRE LT BLU/WHT WIRE LT GRN GRY WIRE LT GRN WIRE LT GRN/BLK WIRE MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP REAR OF ENGINE) ORG/ WIRE ORG/BLK WIRE PC SOL VALVE PNK 3 4 5 WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK 5 6 WIRE PPL PNK PNK 17 18 19 WIRE PPL PNK PNK 24 25 26 WIRE PPL/WHT WIRE RED WIRE RED/BLK WIRE REV STOP LAMP SWITCH (TOP OF BRAKE PEDAL BRACKET) STOP LPS FUSE TAN WIRE TCC PWM SOL TFT SENSOR VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VSS ADAPTER WHT WIRE YEL WIRE YEL/BLK WIRE