GMC Rally G2500 (1985-1995) blk wiring diagrams

blk wiring diagram (61 of 284)

2-DR CAB 2-DR CAB AUXILIARY LEAD (TAPED TO BODY, NEAR FUSE BLOCK) DK BACKUP LIGHT SWITCH (ON STEERING COLUMN) BLK WIRE BLU WIRE BRN WIRE CENTER HIGH MOUNT STOP LAMP CHMSL GROUND (NEAR CHMSL) DK BLU WIRE DK GRN WIRE FUSE FUSE BLOCK (LEFT SIDE OF I/P) GRN WIRE HAZARD HAZARD FLASHER HEAD OFF PARK HEADLIGHT SWITCH HOT AT ALL TIMES HOT IN RUN OR START IN-LINE FUSE INSTRUMENT CLUSTER JUNCTION BLOCK (LEFT SIDE OF COWL) LEFT BACKUP LIGHT LEFT FRONT MARKER LIGHT LEFT FRONT PARK/ TURN LIGHTS LEFT REAR MARKER LIGHT RIGHT REAR MARKER LIGHT RH LH LEFT TAIL/ STOP/ TURN LIGHT LEFT TURN IND LEFT TURN, HAZARD LICENSE LIGHTS LT BLU WIRE LT GRN WIRE NORMAL NOTE:BULBS ARE CASE GROUNDED W/ 2-DR CAB ORG/ WIRE PPL RED WIRE RIGHT BACKUP LIGHT RIGHT FRONT MARKER LIGHT RIGHT FRONT PARK/ TURN LIGHTS RIGHT TAIL/ STOP/ TURN LIGHT RIGHT TURN IND RIGHT TURN, HAZARD STOP -HZ STOP LAMP SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TAIL LPS TURN B/U TURN FLASHER TURN/ HAZARD SWITCH W/ DRL W/O DRL W/OPTIONAL HEAVY-DUTY TRAILER TOW PACKAGE W/OPTIONAL TRAILER TOW PACKAGES WARNINGS SYSTEM WHT WIRE WIRE LEADS ARE SPLICED TO TRAILER WIRING, OR CONNECTED TO TRAILER WIRE PLUG YEL WIRE

Go to component -> Exterior light circuit, without quad halogen headlamps -> BLK WIRE

blk wiring diagram (62 of 284)

2-DR CAB AUXILIARY LEAD (TAPED TO BODY, NEAR FUSE BLOCK) DK BACKUP LIGHT SWITCH (ON STEERING COLUMN) BLK WIRE BLU WIRE BRN WIRE CENTER HIGH MOUNT STOP LAMP CHMSL GROUND (NEAR CHMSL) DK BLU WIRE DK GRN WIRE FUSE FUSE BLOCK (LEFT SIDE OF I/P) GRN WIRE HAZARD HAZARD FLASHER HEAD OFF PARK HEADLIGHT SWITCH HOT AT ALL TIMES HOT IN RUN OR START IN-LINE FUSE INSTRUMENT CLUSTER JUNCTION BLOCK (LEFT SIDE OF COWL) LEFT BACKUP LIGHT LEFT FRONT MARKER LIGHT LEFT FRONT PARK LIGHT RIGHT FRONT PARK LIGHT LEFT FRONT PARK/ TURN LIGHT LEFT TAIL/ STOP/ TURN LIGHT LEFT REAR MARKER LIGHT LEFT TURN IND LEFT TURN, HAZARD LICENSE LIGHTS LT BLU WIRE LT GRN WIRE NORMAL NOTE:BULBS ARE CASE GROUNDED W/ 2-DR CAB ORG/ WIRE PPL RED WIRE RIGHT BACKUP LIGHT RIGHT FRONT MARKER LIGHT RIGHT FRONT PARK/ TURN LIGHT RIGHT REAR MARKER LIGHT RH LH RIGHT TAIL/ STOP/ TURN LIGHT RIGHT TURN IND RIGHT TURN, HAZARD STD 2-DR CAB STOP -HZ STOP LAMP SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) TAIL LPS TURN B/U TURN FLASHER TURN/ HAZARD SWITCH W/OPTIONAL HEAVY-DUTY TRAILER TOW PACKAGE W/OPTIONAL TRAILER TOW PACKAGES WARNINGS SYSTEM WHT WIRE WIRE LEADS ARE SPLICED TO TRAILER WIRING, OR CONNECTED TO TRAILER WIRE PLUG YEL WIRE

Go to component -> Exterior light circuit, with quad halogen headlamps -> BLK WIRE

blk wiring diagram (63 of 284)

1995 VFTC ABOVE 8500# ALL OTHERS AND ANTI-LOCK BRAKES PUMP MOTOR AUXILIARY COOLING LEFT PARK LAMP FAN BATTERY (GASOLINE) FORWARD BATTERY (DIESEL) BLK WIRE BLK/WHT WIRE BLOWER MOTOR BRAIDED COPPER STRAP BUS BAR CRUISE CONTROL MODULE CRUISE CONTROL SERVO DOOR LOCK DELAY MODULE DOOR LOCK DELAY RELAY DOOR LOCK RELAY EGR ELECTRONIC VACUUM REGULATOR VALVE SOLENOID FAN FRONT LEFT PARK AND TURN SIGNAL LAMP FRONT LEFT PARK AND TURN SIGNAL LAMP AUXILIARY COOLING FRONT RIGHT PARK AND TURN SIGNAL LAMP FRONT RIGHT PARK AND TURN SIGNAL LAMP FRONT RIGHT PARK AND TURN SIGNAL LAMP FUEL PUMP RELAY (FUEL PUMP) HEADLAMP DELAY SWITCH HEATED OXYGEN SENSOR HIGH BLOWER RELAY A/C COMP- RESSOR WINDSHIELD WASHER PUMP KEYLESS ENTRY DELAY SET SWITCH KEYLESS ENTRY MODULE LEFT HEADLAMP LEFT HIGH BEAM HEADLAMP LEFT LOW BEAM HEADLAMP LEFT POWER WINDOW SWITCH MODULE ONLY OUTSIDE POWER MIRROR CONTROL SWITCH OXYGEN SENSOR POWER ANTENNA RELAY POWERTRAIN CONTROL MODULE (PCM) REAR BATTERY (DIESEL) REAR BLOWER SWITCH REAR WINDOW DEFOGGER SWITCH RIGHT HEADLAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RIGHT PARK LAMP TAN WIRE TAN/WHT WIRE TIMER RELAY W/ GASOLINE ENGINES W/ QUAD HEADLAMPS W/O DAYTIME RUNNING LAMPS

Go to component -> Ground distribution circuit (1 of 2) -> BLK WIRE

blk wiring diagram (64 of 284)

1995 VFTC ANTI-LOCK BRAKE PUMP MOTOR AUDIO ALARM MODULE BLK WIRE BLK/WHT WIRE BODY BUILDER FRONT MARKER LAMP BODY BUILDER REAR MARKER LAMP BRAKE/ TRANSMISSION SHIFT INTERLOCK SOLENOID SAFETY BELT RETRACTOR SWITCH CIGARETTE LIGHTER COOLANT LEVEL INDICATOR CRUISE CONTROL SERVO DATA LINK CONNECTOR DAYTIME RUNNING LAMPS MODULE DAYTIME RUNNING LAMPS RELAY ENGINE COOLANT LEVEL INDICATOR MODULE FLOW SWITCH (BRAKES) FUEL HEATER GLOW PLUG LAMP INDICATOR GLOW PLUG MODULE HD TRAILER TOW PACKAGE REAR A/C BLOWER MOTOR HEATER CONTROL LAMP INSTRUMENT CLUSTER LEFT BACKUP LAMP LEFT GRID DEFOGGER LEFT REAR SIDE MARKER LAMP LEFT SIDE MARKER LAMP LEFT TAIL/ STOP AND TURN LAMP SIGNAL LIGHT SWITCH MODULE NCA WIRE POWERTRAIN CONTROL MODULE (PCM) RADIO RIGHT BACKUP LAMP RIGHT GRID DEFOGGER RIGHT REAR SIDE MARKER LAMP RIGHT SIDE MARKER LAMP RIGHT TAIL/ STOP AND TURN LAMP SIGNAL TAN/WHT WIRE VEHICLE SPEED SENSOR BUFFER W/ DIESEL ENGINES WATER IN-FUEL SENSOR WHT WIRE WINDSHIELD WASHER PUMP WINDSHIELD WIPER MOTOR MODULE

Go to component -> Ground distribution circuit (2 of 2) -> BLK WIRE

blk wiring diagram (65 of 284)

** (FRONT OF LEFT CYLINDER HEAD) (REAR OF CYLINDER HEAD) ** (RIGHT FRAME RAIL, NEAR BATTERY) ** (RIGHT SIDE OF RADIATOR SUPPORT) (RIGHT REAR OF ENGINE) ** WITH SCHOOLBUS EQUIPMENT BATTERY (GASOLINE ENGINES) BLK BLK WIRE BLK WIRE BLK/ WHT WIRE BLK/WHT WIRE CONTROLLER CONVENIENCE CENTER DATA LINK CONN- ECTOR DAYTIME RUNNING LAMP MODULE DAYTIME TRANSMISSION RUNNING LAMP RELAY RANGE INDICATOR LAMP FUEL CYCLE MODULE EGR ELECTRONIC VACUUM REGULATOR SOLENOID VALVE ENGINE ENGINE DATA LINK CONNECTOR TRANSMISSION CONTROL MODULE COOLANT LEVEL SENSOR FUEL PUMP FUEL PUMP RELAY LEFT (OR REAR ) BATTERY ** LEFT HIGH BEAM HEADLAMP LEFT HIGH/ LOW HEADLAMP LEFT HORN LEFT TURN/ PARK LAMP ASSEMBLY NOT USED PANEL DIMMER SWITCH WASHER PUMP I/P CLUSTER PARK BRAKE SWITCH POWERTRAIN CONTROL MODULE (PCM) PROVISIONS PROVISIONS FOR RIGHT SIDE MARKER FOR LEFT SIDE MARKER RIGHT (OR FRONT ) BATTERY RIGHT HIGH BEAM HEADLAMP RIGHT HIGH/ LOW HEADLAMP RIGHT HORN RIGHT TURN/ PARK LAMP ASSEMBLY STARTER RELAY TAN WIRE VEHICLE SPEED SENSOR BUFFER FUEL HEATER VEHICLE SPEED SENSOR BUFFER KNOCK SENSOR SYSTEM MODULE HEATED OXYGEN SENSOR W/ AUTOMATIC TRANSMISSION W/ AUTOMATIC TRANSMISSIONS W/ DAYTIME RUNNING LIGHTS W/ DIESEL ENGINE W/ DIESEL ENGINES W/ GASOLINE ENGINES W/ SCHOOLBUS EQUIPMENT WATER- IN-FUEL SENSOR GLOW PLUG WIPER MOTOR

Go to component -> Ground distribution circuit, commercial chassis -> BLK WIRE

blk wiring diagram (66 of 284)

3 121 PNK WIRE 4.3L AND 7.4L 5.7L ACCY ALT FUSE BLK WIRE BLK/RED WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE BULB TEST DISTRIBUTOR (CENTER REAR OF ENGINE) DK BLU WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (TOP FRONT OF ENGINE) FUSE BLOCK GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START IGNITION COIL (TOP RIGHT REAR OF ENGINE) IGNITION SWITCH INSTRUMENT CLUSTER KNOCK SENSOR (LEFT REAR OF ENGINE, NEAR OIL PRESSURE SENDER) KNOCK SENSOR MODULE (TOP RIGHT SIDE OF ENGINE) LOCK OFF LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION (SERVICE ENGINE SOON) INDICATOR MANIFOLD ABSOLUTE PRESSURE SENSOR (ABOVE VALVE COVER) NCA WIRE ORG/ WIRE PNK 25 26 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 2 3 4 PPL 23 24 PPL/WHT WIRE PROVISIONS FOR TACHOMETER RED WIRE RED/BLK WIRE RUN WIRE TAN/BLK WIRE TCC/BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANS FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

Go to component -> Wiring diagram engine performance 7.4l (vin n)s, a/t commercial chassis and motorhome (2 of 3) -> BLK WIRE

blk wiring diagram (67 of 284)

1 2 PPL 1-2 SHIFT SOLENIOD 2-3 SHIFT SOLENIOD 4.3L 5.7L AND 7.4L B/H CONN BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE DATA LINK CONNECTOR (BEHIND LEFT SIDE OF SHIPPING PANEL) DK BLU WIRE DK GRN/WHT WIRE ECM BAT FUSE ELECTRONIC 4-SPEED AUTOMATIC OVERDRIVE TRANSMISSION FUEL PUMP AND SENDER (IN FUEL TANK) FUEL PUMP OIL PRESSURE SWITCH (TOP REAR OF ENGINE) FUEL PUMP PRIME CONNECTOR (NO LOCATION AVAILABLE) FUEL PUMP RELAY (LOWER LEFT SIDE OF SHIPPING PANEL) FUSE BLOCK GRY WIRE HEATED OXYGEN SENSOR (IN EXHAUST MANIFOLD) HOT AT ALL TIMES LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE OXYGEN SENSOR (IN EXHAUST MANIFOLD) PNK WIRE PNK/BLK WIRE PPL PPL/WHT WIRE PRESSURE CONTROL SOLENOID RANGE MODE SELECTOR RED WIRE RED/BLK WIRE SOLENOID TORQUE CONVERTER CLUTCH TRANS- MISSION TEMP SENSOR VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (BEHIND RIGHT SIDE OF I/P) WHT/BLK WIRE YEL/BLK WIRE

Go to component -> Wiring diagram engine performance 7.4l (vin n)s, a/t commercial chassis and motorhome (3 of 3) -> BLK WIRE

blk wiring diagram (68 of 284)

5.7L 7.4L 7.4L ONLY AIR CONDITION- ING SYSTEM BLK WIRE BLK/RED WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE DIAGNOSTIC TEST TP SENSOR SIGNAL INJECTOR 1 CONTROL DK BLU WIRE DK BLU/WHT WIRE DK GRN WIRE DK GRN/WHT WIRE DK GRN/YEL WIRE ECM BAT FUSE ECM I FUSE ECT SIGNAL EGR CONTROL EVAPORATIVE CANISTER PURGE CONTROL SOLENOID (TOP RIGHT SIDE OF ENGINE) EXHAUST GAS RECIRCULATION VALVE SOLENOID (TOP RIGHT SIDE OF ENGINE) FUEL PUMP RELAY CTRL PCS LOW FUEL PUMP SIGNAL MAP SIGNAL FUSE BLOCK GRY WIRE GRY/RED WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START IC BYPASS SENSOR GROUND SENSOR GROUND TFT SIGNAL 470 455 PPL IDLE AIR CONTROL ACTUATOR (TOP REAR OF ENGINE) IDLE SPEED ACTUATOR CONTROL SOLENOID (NO LOCATION AVAILABLE) KNOCK SIGNAL EGR PINTLE POSITION SIGNAL LINEAR EGR VACUUM REGULATOR SOLENOID VALVE (TOP FRONT OF ENGINE) LT BLU/BLK WIRE LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE OXYGEN SENSOR (IN EXHAUST MANIFOLD) OXYGEN SENSOR GROUND PNK 22 23 WIRE PNK RANGE SIGNAL A INPUT SPEED SIGNAL HIGH INPUT SPEED SIGNAL LOW WIRE PNK/BLK WIRE POWERTRAIN CONTROL MODULE (LEFT SIDE OF SHIPPING PANEL) PPL PPL 20 21 PPL/WHT WIRE RANGE SIGNAL B RANGE SIGNAL C MIL CONTROL RED WIRE RED/BLK WIRE TAN WIRE TAN/BLK WIRE TAN/WHT WIRE THROTTLE BODY FUEL INJECTOR #1 (TOP OF THROTTLE BODY UNIT) THROTTLE BODY FUEL INJECTOR #2 (TOP OF THROTTLE BODY UNIT) TRANSMISSION INPUT SPEED SENSOR (LEFT SIDE OF TRANSMISSION) WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

Go to component -> Wiring diagram engine performance 7.4l (vin n)s, a/t p/g cutaway (1 of 3) -> BLK WIRE

blk wiring diagram (69 of 284)

3 121 PNK WIRE ACCY BLK WIRE BLK/RED WIRE BLK/YEL WIRE BRN WIRE BRN/WHT WIRE BULB TEST DISTRIBUTOR (CENTER REAR OF ENGINE) DK BLU WIRE DK GRN/WHT WIRE ENGINE COOLANT TEMPERATURE SENSOR (TOP FRONT OF ENGINE) FUSE BLOCK GAGES FUSE GRY WIRE HOT AT ALL TIMES HOT IN RUN, BULB TEST OR START IGNITION COIL (TOP RIGHT REAR OF ENGINE) IGNITION SWITCH INSTRUMENT CLUSTER KNOCK SENSOR (LEFT REAR OF ENGINE, NEAR OIL PRESSURE SENDER) LOCK OFF LT BLU/WHT WIRE LT GRN WIRE MALFUNCTION (SERVICE ENGINE SOON) INDICATOR MANIFOLD ABSOLUTE PRESSURE SENSOR (ABOVE VALVE COVER) NCA WIRE ORG/ WIRE PNK 22 23 WIRE PNK WIRE PNK/BLK WIRE PPL PPL 20 21 PPL 3 4 PPL/WHT WIRE PROVISIONS FOR TACHOMETER RED WIRE RED/BLK WIRE RUN WIRE TAN/BLK WIRE TCC/BRAKE SWITCH (ON BRAKE PEDAL SUPPORT BRACKET) THROTTLE POSITION SENSOR (ON THROTTLE BODY) TRANS FUSE WHT WIRE WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

Go to component -> Wiring diagram engine performance 7.4l (vin n)s, a/t p/g cutaway (2 of 3) -> BLK WIRE

blk wiring diagram (70 of 284)

1-2 SHIFT SOLENIOD 2-3 SHIFT SOLENIOD B/H CONN BLK WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE DATA LINK CONNECTOR (BEHIND LEFT SIDE OF SHIPPING PANEL) DK BLU WIRE DK GRN/WHT WIRE ELECTRONIC 4-SPEED AUTOMATIC OVERDRIVE TRANSMISSION FUEL PUMP AND SENDER (IN FUEL TANK) FUEL PUMP FUSE FUEL PUMP OIL PRESSURE SWITCH (TOP REAR OF ENGINE) FUEL PUMP PRIME CONNECTOR (TOP OF COWL) FUEL PUMP RELAY (LOWER LEFT SIDE OF SHIPPING PANEL) FUSE BLOCK GRY WIRE HOT AT ALL TIMES LT BLU/WHT WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE ORG/ WIRE PNK WIRE PNK/BLK WIRE PPL PPL 3 4 PPL/WHT WIRE PRESSURE CONTROL SOLENOID RANGE MODE SELECTOR RED WIRE RED/BLK WIRE SOLENOID TAN/BLK WIRE TORQUE CONVERTER CLUTCH TRANS- MISSION TEMP SENSOR VEHICLE SPEED SENSOR (LEFT REAR OF TRANSMISSION) VEHICLE SPEED SENSOR BUFFER (BEHIND RIGHT SIDE OF I/P) WHT/BLK WIRE YEL/BLK WIRE

Go to component -> Wiring diagram engine performance 7.4l (vin n)s, a/t p/g cutaway (3 of 3) -> BLK WIRE

GMC Rally G2500 (1985-1995) blk Wiring diagrams

blk wiring diagram (61 of 284)

List of components:

blk wiring diagram (62 of 284)

List of components:

blk wiring diagram (63 of 284)

List of components:

blk wiring diagram (64 of 284)

List of components:

blk wiring diagram (65 of 284)

List of components:

blk wiring diagram (66 of 284)

List of components:

blk wiring diagram (67 of 284)

List of components:

blk wiring diagram (68 of 284)

List of components:

blk wiring diagram (69 of 284)

List of components:

blk wiring diagram (70 of 284)

List of components:

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