GMC Sierra 2500 (2000-2004) splice pack 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

1-2 SHIFT SOLENOID 2-3 SHIFT SOLENOID 41 46 54 57 58 59 63 72 74 75 LO REF A/T FLUID PRESSURE MANUAL VALVE POSITION SWITCH AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY RELAY BLOCK (UNDER LEFT END OF DASH) BRAKE FUSE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE ECMB FUSE EXCEPT LIGHT DUTY FLUID TEMP SENSOR FUSE GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN HOT IN RUN, BULB TEST, START HOT IN RUN, START INSTRUMENT CLUSTER INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LIGHT DUTY 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 ABS SYSTEM PPL DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL PPL 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 SPLICE PACK STOPLIGHT SWITCH (TOP OF BRAKE PEDAL BRACKET) TCC PWM SOLENOID TRANSFER CASE) (ON TRANSMISSION) UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VSS ADAPTER W/ TRACTION ASSIST W/O TRACTION ASSIST WHT WIRE YEL WIRE YEL/BLK WIRE

5.3L W/DUAL BATTERIES AUXILIARY BATTERY RELAY (RIGHT REAR OF ENG COMPT) BATTERY BLK WIRE BLK/WHT WIRE BRN WIRE CHARGE INDICATOR CONTROL COMPUTER DATA LINES DK BLU WIRE DK GRN WIRE FUSIBLE LINK FUSIBLE LINK (8.1L ONLY) GENERATOR B+ GENERATOR FIELD DUTY CYCLE SIGNAL GROUND GRY WIRE HOT IN RUN, START I/P RELAY BLOCK (BELOW LEFT SIDE OF DASH, LEFT OF STEERING COLUMN) IGN 1 VOLT IGN E FUSE INSTRUMENT PANEL CLUSTER IPC CLASS 2 SERIAL DATA LEFT BATTERY LOGIG PNK WIRE POWER DISTRIBUTION SYSTEM RED WIRE RIGHT BATTERY RIGHT BATTERY (W/AUX BATTERY) SEO IGN FUSE SERIAL DATA CLASS 2 SPLICE PACK STARTER SOLENOID SUPPLEMENTAL BRAKE ASSIST (SBA) PUMP MOTOR (MOUNTED TO POWER BRAKE BOOSTER) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT, NEAR BATTERY) W/ SEO W/AUX BATTERY W/O SEO

3 2 PPL BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (ON LOWER LEFT SIDE OF DASH, BELOW STEERING COLUMN) BODY RELAY BLOCK BODY RELAY BLOCK (UNDER LEFT SIDE OF DASH, NEAR KICK PANEL) BRN/WHT WIRE CIGAR FUSE DATA LINK CONNECTOR (DLC) (UNDER LEFT SIDE OF DASH, BELOW STEERING COLUMN) DIESEL DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRIVER INFORMATION CENTER (DIC) ELECTRONIC BRAKE CONTROL MODULE (EBCM) (ON LEFT SIDE OF INNER FRAME) GRY WIRE HOT AT ALL TIMES HVAC CONTROL MODULE (BEHIND CENTER OF DASH) INSTRUMENT PANEL CLUSTER (IPC) LT BLU WIRE LT GRN WIRE MEMORY SEAT MODULE (UNDERSODE OF DRIVER SEAT) 15 14 13 12 11 10 9 8 7 6 NEAR KICK PANEL) ORG/ WIRE POWERTRAIN CONTROL MODULE (PCM) (ON LEFT FRONT OF ENGINE COMPT) SPLICE PACK TRANSFER CASE SHIFT CONTROL MODULE (BEHIND HEADLAMP SWITCH) TRANSMISSION CONTROL MODULE (AT LEFT FRONT OF ENG COMPT) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENG COMPT, NEAR BATTERY) UNDERHOOD FUSE BLOCK (AT LEFT SIDE OF ENGINE COMPT, NEAR BATTERY) VEHICLE INTERFACE UNIT (BEHIND RIGHT SIDE OF DASH) WHT WIRE YEL WIRE

BLK WIRE BRN WIRE FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) GROUND (BASE) GROUND (UPLEVEL) HOT AT ALL TIMES HOT IN RUN HVAC 1 FUSE HVAC CONTROL MODULE (IN CENTER OF DASH, UNDER RADIO) IGN IND RELAY CTRL PPL REAR WINDOW DEFOGGER GRID REAR WINDOW DEFOGGER RELAY RR DEFOG FUSE SPLICE PACK WHT WIRE

5 20 22 DOOR AJAR SW SIG DOOR SW LO REF SERIAL DATA AJAR SW BASE BATTERY PK LAMP REL HEADLIGHTS CTRL GROUND HORN RLY CTRL SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BRN WIRE DK BLU WIRE DK GRN WIRE DRIVER DOOR MODULE DRIVER MINI-WEDGE DOOR JAMB SWITCH (REAR OF DRIVER'S DOOR) EXTERIOR LIGHTS SYSTEM HEADLIGHTS SYSTEM FRONT PASSENGER DOOR MODULE FRONT PASSENGER MINI-WEDGE DOOR JAMB SWITCH (REAR OF RIGHT FRONT DOOR) GROUND GRY/BLK WIRE HORNS SYSTEM HOT AT ALL TIMES I/P RELAY BLOCK (NEAR LEFT KICK PANEL) INSIDE DRIVER DOOR) KEY SW LEFT I/P FUSE BLOCK (LOWER LEFT SIDE OF DASH) LEFT REAR MINI-WEDGE DOOR JAMB SWITCH (CREW CAB) (REAR OR LEFT REAR DOOR) LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ORG/ WIRE RF DOOR AJAR SW LF DOOR AJAR SW RIGHT I/P FUSE BLOCK (LOWER RIGHT SIDE OF DASH) RIGHT REAR MINI-WEDGE DOOR JAMB SWITCH (CREW CAB) (REAR OR RIGHT REAR DOOR) RR DOOR AJAR SW LR DOOR AJAR SW SPLICE PACK TAN WIRE TBC BATT FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT) WHT WIRE

58 59 15 16 DATA DATA BATTERY GROUND LOW REFERENCE SERIAL DATA BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (LOWER LEFT SIDE OF DASH, NEAR STEERING COLUMN) CLASS 2 SERIAL DATA DATA LINK CONNECTOR (UNDER LEFT SIDE OF DASH) PPL DK GRN WIRE EXCEPT 6.6L VIN 2 6.6L VIN 2 GRY WIRE HOT AT ALL TIMES HOT IN RUN, START I/P RELAY BLOCK (NEAR LEFT KICK PANEL) IGN IGN SW SIG IGN 1 VOLTAGE PNK WIRE IGNITION KEY ALARM SWITCH (ON IGNITION KEY CYLINDER) INSTRUMENT PANEL CLUSTER KEY LT GRN WIRE MAGNET LOCK CYLINDER ORG/ WIRE ORG/BLK WIRE PASSLOCK SENSOR (INTERNAL TO STEERING COLUMN) PNK WIRE PPL RED/WHT WIRE SEC SENS SIG SERIAL DATA GROUND SECURITY INDICATOR SECURITY SENSOR SPLICE PACK TAMPER SENSOR TBC BATT FUSE TBC IGN 1 FUSE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENG COMPT) YEL WIRE

BLK WIRE BLU WIRE BRN WIRE DK BLU WIRE DK GRN WIRE DRIVER WINDOW MOTOR DRIVER WINDOW/ DOOR LOCK SWITCH RIGHT UP RIGHT DOWN FUSE BLOCK (ON LOWER LEFT SIDE OF DASH) HOT IN ACC, RUN, BULB TEST, START, WITH RAP RELAY ENERGIZED I/P JUNCTION BLOCK (ON LOWER RIGHT SIDE OF DASH) LEFT DOWN LEFT UP PASSENGER WINDOW MOTOR PASSENGER WINDOW/ DOOR LOCK SWITCH PWR WDO CIRCUIT BREAKER SPLICE PACK TAN WIRE UP DOWN WDO DN RELAY WDO UP RELAY

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)