GMC Rally G3500 (1985-1996) blk Wiring diagrams

4000 PULSES/MILE CRUISE STATUS BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE FUSE 18 STOP FUSE 1 BRN WIRE CRUISE CONTROL MODULE (FRONT OF ENGINE COMPT NEAR LEFT FENDER) CRUISE FUSE 6 CRUISE STATUS VEHICLE SPEED INPUT DK BLU WIRE DK GRN/WHT WIRE FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN LT BLU/BLK WIRE LT GRN/BLK WIRE MULTIFUNCTION LEVER OFF ORG/ WIRE PPL PPL/WHT WIRE R/A S/C DK TCC/STOPLAMP BRAKE SWITCH (BELOW CENTER OF I/P) VEHICLE CONTROL MODULE (VCM) (IN ENGINE COMPT, ON LEFT FENDER) VEHICLE SPEED SENSOR (VSS) (LEFT SIDE OF TRANSMISSION) VSS RETURN VSS SIGNAL WHT WIRE

BLK WIRE BLU WIRE BRAKE APPLIED INPUT BRAKE FUSE 18 STOP FUSE 1 BRN WIRE CRUISE FUSE 6 CRUISE ON INPUT DK BLU WIRE FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN MULTIFUNCTION LEVER OFF ORG/ WIRE POWERTRAIN CONTROL MODULE (PCM) (BEHIND CENTER OF I/P) PPL PPL DISENGAGE INPUT R/A RESUME/ACCEL INPUT S/C DK SET/COAST INPUT TCC/STOPLAMP BRAKE SWITCH (BELOW CENTER OF I/P) VEHICLE SPEED BUFFER (BELOW LEFT SIDE OF I/P) VSS WHT WIRE

4000 PULSES/MILE CRUISE STATUS BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE FUSE 18 STOP FUSE 1 BRN WIRE CRUISE CONTROL MODULE (FRONT OF ENGINE COMPT NEAR LEFT FENDER) CRUISE FUSE 6 CRUISE STATUS VEHICLE SPEED INPUT DK BLU WIRE DK GRN/WHT WIRE FUSE BLOCK GRY WIRE GRY/BLK WIRE HOT AT ALL TIMES HOT IN RUN LT BLU/BLK WIRE LT GRN/BLK WIRE MULTIFUNCTION LEVER OFF ORG/ WIRE PPL PPL/WHT WIRE R/A S/C DK TCC/STOPLAMP BRAKE SWITCH (BELOW CENTER OF I/P) VEHICLE CONTROL MODULE (VCM) (IN ENGINE COMPT, ON LEFT FENDER) VEHICLE SPEED SENSOR (VSS) (LEFT SIDE OF TRANSMISSION) VSS RETURN VSS SIGNAL WHT WIRE

3 2 PPL BLK WIRE BLK/WHT WIRE CONVENIENCE CENTER (BEHIND LEFT SIDE OF I/P) DATA LINK CONNECTOR (BELOW LEFT SIDE OF I/P) DIESEL GASOLINE DLC CONTROL ELECTRONIC BRAKE CONTROL MODULE (LEFT FRAME RAIL, NEAR CENTER OF VEHICLE) HOT AT ALL TIMES I/P FUSE BLOCK INFLATABLE RESTRAINT CONTROL MODULE (UNDER LEFT FRONT SEAT) ORG/ WIRE POWERTRAIN CONTROL MODULE (BEHIND CENTER OF I/P) PPL DATA CLSS 2 PROG ENABLE PWR AUX FUSE 7 REMOTE CONTROL DOOR LOCK RECEIVER (UPPER RIGHT KICK PANEL) TAN WIRE TAN/WHT WIRE UART DATA VEHICLE CONTROL MODULE (LEFT FRONT FENDER APRON)

1995 VFTC BLK WIRE BRN WIRE CONVENIENCE CENTER (UNDER LEFT SIDE OF I/P) HEATED MIRROR SWITCH HEATER-A/C CONTROL HOT AT ALL TIMES HOT IN HTR A/C FUSE 12 HTR MIR FUSE 2 I/P FUSE BLOCK LEFT POWER OUTSIDE REAR VIEW MIRROR ORG/ WIRE RIGHT POWER OUTSIDE REAR VIEW MIRROR RUN WIRE SOLID STATE TIMER W/ UPLIFTER PROVISIONS ONLY

A/C COMPRESSOR CLUTCH RELAY BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CAMSHAFT POSITION SENSOR (PART OF DISTRIBUTOR, TOP REAR OF ENGINE) COIL DK BLU WIRE DK BLU/WHT WIRE DK GRN/WHT WIRE DK PNK WIRE EGR SOL OUTPUT SIGNAL SIGNAL SIGNAL SIGNAL FUEL INJ OUT NO.1 SHIFT SOL B OUTPUT GRN WIRE GRY WIRE KNOCK SENS SIGNAL KNOCK SENSOR (TOP REAR OF ENGINE) LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE LT LT LT PPL MAP SENS SIGNAL SIGNAL SENSOR SIGNAL SENSOR SIGNAL 472 410 NCA WIRE PNK 12 13 14 15 16 WIRE PNK PNK PNK PNK PNK 1 2 3 4 5 6 7 WIRE PNK PPL WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK WIRE PPL PPL PPL RETURN RETURN SIGNAL SIGNAL PPL/WHT WIRE RED/BLK WIRE RETURN RETURN RETURN RETURN RETURN SHIFT SOL A OUTPUT TCC SOL OUTPUT SIGNAL IGNITION FUEL INJ OUT NO.8 PNK WIRE SOLENOID OUTPUT SHIFT SOLENOID OUTPUT SOLID STATE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TCC SOL OUTPUT UNDERHOOD FUSE-RELAY CENTER VEHICLE CONTROL MODULE (ENGINE COMPARTMENT, LEFT FENDER) VEHICLE SPEED SENSOR (LEFT SIDE OF TRANSMISSION) VSS SIGNAL WHT WIRE YEL WIRE YEL/BLK WIRE

4-SPEED TRANS. ONLY 5 6 7 8 9 10 PNK PNK PNK PNK WIRE AUTOMATIC TRANSMISSION BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE DK BLU WIRE DK BLU/WHT WIRE ECM-1 MINI FUSE ENG-1 MINI FUSE EXHAUST GAS RECIRCULATION VALVE SOLENOID (TOP FRONT OF ENGINE) FORCE MOTOR FEED SHIFT SOLENOID "B" FORCE MOTOR RETURN IGNITION FUEL INJ. NO.1 FUEL INJ. NO.2 FUEL INJ. NO.3 FUEL INJ. NO.4 FUEL INJ. NO.5 FUEL INJ. NO.6 FUEL INJ. NO.7 FUEL INJ. NO.8 GRN WIRE GRY WIRE HOT IN RUN OR START LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT PNK WIRE NCA WIRE PNK 1 2 WIRE PNK 12 13 14 15 16 WIRE PNK LT WIRE PNK PNK PNK PNK PNK WIRE PNK WIRE PNK/BLK WIRE PPL PPL PNK WIRE PSS SIGNAL BIT 1 TEMP SENSOR SIGNAL PSS SIGNAL BIT 2 PSS SIGNAL BIT 3 RED WIRE RED/BLK WIRE SHIFT SOLENOID A TAN WIRE TAN/BLK WIRE TCC SOLENOID OUTPUT TRANS.) UNDER HOOD FUSE-RELAY CENTER WHT WIRE YEL WIRE YEL/BLK WIRE

19 20 PNK WIRE 5 6 7 8 9 10 PNK PNK PNK PNK WIRE A/C COMPRESSOR HIGH PRESSURE CUTOFF SWITCH (ON REAR PORTION OF A/C COMPRESSOR) BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ECM-B MINI FUSE ENGINE COOLANT TEMPERATURE GAUGE SENSOR (TOP FRONT OF ENGINE) EVAP CANISTER PURGE VACUUM DIAGNOSTIC SWITCH (RIGHT SIDE OF ENGINE) FUEL PUMP PRIME CONNECTOR FUEL PUMP RELAY FUEL PUMP SWITCH, ENGINE OIL PRESSURE GAUGE SENSOR FUEL PUMP, SENDER (PUMP SHOWN) (IN FUEL TANK UNDER REAR OF VEHICLE) GAUGES FUSE 4 GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN RUN OR START HOT IN RUN, START, OFF I/P FUSE BLOCK INSTRUMENT CLUSTER LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION INDICATOR LAMP (MIL) "SERVICE ENGINE SOON" MANIFOLD ABSOLUTE PRESSURE SENSOR (TOP RIGHT SIDE OF ENGINE) MASS AIR FLOW SENSOR (PART OF AIR INTAKE DUCT, TOP FRONT OF ENGINE) OIL PRESSURE GAUGE INPUT ORG/ WIRE PNK PNK 1 2 3 4 5 6 7 8 9 10 11 WIRE PNK WIRE RED WIRE RED/BLK WIRE SPEEDOMETER/ ODOMETER INPUT TAN WIRE TAN/WHT WIRE THROTTLE POSITION SENSOR (TOP LEFT SIDE OF ENGINE) TRANS FUSE 20 UNDERHOOD FUSE-RELAY CENTER WHT WIRE YEL WIRE

19 20 PNK WIRE 5-VOLT REFERENCE 999 999 SERVICE CIRCUIT POWER SERVICE CIRCUIT POWER A/C SIGNAL A/T INPUT SPEED SENSOR BATTERY BATTERY PRESSURE SW SIGNAL PRESSURE SW SIGNAL BLK WIRE BLK/WHT WIRE BLU WIRE BRAKE FUSE 18 BRN WIRE BRN/WHT WIRE CRUISE CONTROL MODULE (FRONT OF ENGINE COMPARTMENT NEAR LEFT FENDER) CRUISE CTRL SIG-ENG CYL. NO.1 CYL. NO.8 CYL. NO.2 CYL. NO.4 CYL. NO.5 CYL. NO.3 CYL. NO.6 CYL. NO.7 DATA LINK CONNECTOR (UNDER LEFT SIDE OF I/P) DISTRIBUTOR DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE ELECTRONIC BRAKE CONTROL MODULE (EBCM) (LEFT FRAME RAIL NEAR CENTER OF VEHICLE) FORCE MOTOR FEED RETURN SIGNAL ELEC SPARK TIMING FUEL PUMP RLY FEED 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 GRY WIRE GVW OVER 8500 LBS. GVW UNDER 8500 LBS HIGH VOLTAGE COIL WIRE HOT IN RUN I/P FUSE BLOCK IGNITION IGNITION COIL (TOP RIGHT SIDE OF ENGINE) IGNITION COIL DRIVER (TOP RIGHT SIDE OF ENGINE) LT BLU/BLK WIRE LT BLU/WHT WIRE ORG/ WIRE PNK IGNITION WIRE PNK PNK 1 2 3 4 5 6 7 8 9 10 11 WIRE PNK WIRE PPL PPL 420 PPL PPL PPL PPL 420 1807 BRAKE SWITCH INPUT SERIAL DATA PRESSURE SW SIGNAL 5 VOLTS REFERENCE RADIO RED WIRE RED/BLK WIRE SENSOR GROUND SERIAL DATA SIGNAL FORCE MOTOR RETURN GROUND GROUND SENSOR GROUND SOLID STATE SPARK PLUGS SPEED SENSOR INPUT VCM SIGNAL STOPLAMP SWITCH INPUT TAN/WHT WIRE TCC SIGNAL TRANSMISSION ONLY) (LEFT SIDE OF TRANSMISSION) VEHICLE CONTROL MODULE (ENGINE COMPARTMENT, LEFT FENDER) VSS SIGNAL VSS SIGNAL OUTPUT VSS SIGNAL OUTPUT MAL FUNC LP OUTPUT 389 419 WHT WIRE WHT/BLK WIRE

1226 1225 RANGE MODE SEL C RANGE MODE SEL B RANGE MODE SEL A 27 28 29 30 31 PPL 3/2 SHIFT SOL. FORCE MOTOR 7 8 9 10 12 13 14 15 VSS RTN GROUND A/C SYSTEM A/T INPUT SPEED SENSOR (LEFT SIDE OF TRANSMISSION NEAR FRONT) ANTI-LOCK BRAKE SYSTEM BLK WIRE BLK/WHT WIRE BLU WIRE BRN WIRE BRN/WHT WIRE CRUISE CONTROL SWITCH DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK PNK/ PNK WIRE ECT TEMP SENS IN GRN WIRE GRY WIRE GRY/BLK WIRE HEAVY DUTY ELECTRONIC 4-SPD AUTOMATIC OVERDRIVE TRANSMISSION INTAKE MAN AIR TEMP SENS TPS NO.2 SIG GLOW PLUG RELAY FORCE MTR LOW LT BLU WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE MAP SENS INPUT FORCE MTR HI ORG/ WIRE ORG/BLK WIRE PCS LOW PNK PNK PPL 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 WIRE PNK WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (PCM) (UNDER RIGHT END OF I/P, ABOVE BLOWER MOTOR) PPL PPL BRAKE SW IN BRAKE SWITCH INPUT CRUISE CTRL SW ENGAGE PPL SENSOR RETURN A/C REQUEST SIG PPL/WHT WIRE RADIO RED WIRE RED/BLK WIRE RESUME SENSOR GND SET- SHIFT SOL. SHIFT SOL. RANGE MODE SELECTOR SOLID STATE TAN WIRE TAN/BLK WIRE TIMING STEPPER MTR (LOW) TIMING STEPPER MTR (LOW) TRANSMISSION SPEED INPUT TRANSMISSION TEMP INPUT TRANSMISSION TEMPERATURE SENSOR VEHICLE SPEED SENSOR (ON TRANSMISSION, LEFT REAR SIDE) VEHICLE SPEED SENSOR BUFFER (BELOW LEFT SIDE OF I/P) VSS SIG VSS SIG VSS HI VSS LO SECOND VSS SIG WHT WIRE YEL WIRE YEL/BLK WIRE