GMC Vandura Special G3500 1994 - ELECTRICAL COMPONENT LOCATOR 1994 ELEC. COMPONENT LOCATION - GM VANS

GMC Vandura Special G3500 1994 - BUZZERS, RELAYS & TIMERS

GMC Vandura Special G3500 1994 BUZZERS, RELAYS & TIMERS LOCATION

Component	Location
A/C-Heater Blower Relay	On evaporator case, in engine compartment.
Aux. Cooling Fan Relay	On center of firewall.
Auxiliary Power Relay	Behind left door pillar.
Brake Warning Alarm Buzzer	Behind left side of dash.
Brake/Trans. Shift Interlock Relay	Behind left side of dash, above steering column.
Daytime Running Lights (DRL) Relay	Behind left side of dash.
Fuel Pump Relay
4.3L (VIN Z) 4L60E A/T	On center of firewall. See Fig. 1 .
4.3L (VIN Z) 4L80E A/T	On center of firewall. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On center of firewall. See Fig. 3 .
5.7L (VIN K) A/T	On center of firewall. See Fig. 4 .
7.4L (VIN N)	On center of firewall. See Fig. 5 .
5.7L (VIN K)	On center of firewall. See Fig. 6 .
7.4L (VIN N)	On center of firewall. See Fig. 7 .
Glow Plug Relay
6.5L (VIN F)	On top rear center of engine. See Fig. 8 .
6.5L (VIN P)	On top left rear of engine. See Fig. 9 .
Hazard Flasher	Near main fuse block.
Horn Relay	Near main fuse block, behind left side of dash.
Power Antenna Relay	Behind left side of dash, on steering column bracket.
Power Door Lock Delay Relay	Behind left side of dash, above kick panel.
Power Door Lock Relay	Behind left side of dash, above kick panel.
Rear Defogger Timer/Relay	On brake pedal support bracket.
Turn Signal Flasher	On fuse block.

GMC Vandura Special G3500 1994 - CIRCUIT PROTECTION DEVICES

GMC Vandura Special G3500 1994 CIRCUIT PROTECTION DEVICES LOCATION

Component	Location
Battery Junction Block	On left side of firewall, near bulkhead connector.
Circuit Breakers
Power Accessory	On main fuse block.
Power Window	On main fuse block.
Fuse Block
Auxiliary	Attached to lower side of main fuse block.
Main
4.3L (VIN Z) 4L60E A/T	Behind left side of dash, above kick panel. See Fig. 1 .
4.3L (VIN Z) 4L80E A/T	Behind left side of dash, above kick panel. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	Behind left side of dash, above kick panel. See Fig. 3 .
5.7L (VIN K) A/T	Behind left side of dash, above kick panel. See Fig. 4 .
5.7L (VIN K)	Behind left side of dash, above kick panel. See Fig. 6 .
6.5L (VIN P)	Behind left side of dash, above kick panel. See Fig. 9 .
7.4L VIN N	Behind left side of dash, above kick panel. See Fig. 5 .
7.4L VIN N	Behind left side of dash, above kick panel. See Fig. 7 .
Fusible Links	At battery junction block.

GMC Vandura Special G3500 1994 - CONTROL UNITS

GMC Vandura Special G3500 1994 CONTROL UNITS LOCATION

Component	Location
ABS Module	Under right side of vehicle, on frame rail.
Accelerator Pedal Position Module (6.5L VIN P)	Behind left side of dash. See Fig. 9 .
Air Bag Module	Behind left side of dash, near main fuse block.
Audio Alarm Module	Behind left side of dash, below main fuse block.
Cruise Control Module (6.5L VIN P)	On top rear of parking brake bracket. See Fig. 9 .
Daytime Running Lights (DRL) Module	Behind left side of dash, above steering column.
Diode Array Module	Behind left side of dash, near bulkhead connector.
Electronic Delay Module	Behind left side of dash.
Engine Coolant Level Indicator Module	Behind left side of dash.
Fuel Module	Behind left side of dash, on instrument wiring harness. See Fig. 10 .
Glow Plug Controller (Diesel)
6.5L (VIN P)	On left side of engine.
6.5L (VIN Y)	On top rear of engine.
Governor Control Module (7.4L)	On top left front of engine.
Ignition Control Module	In distributor.
Keyless Entry Module	Behind right side of dash.
Power Door Lock Delay Module	Behind left side of dash, to right of steering column.
Powertrain Control Module (PCM)
4.3L (VIN Z) 4L60E A/T	Under driver's seat. See Fig. 1 .
4.3L (VIN Z) 4L80E A/T	Under driver's seat. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	Under driver's seat. See Fig. 3 .
5.7L (VIN K) A/T	Under driver's seat. See Fig. 4 .
7.4L (VIN N)	Under driver's seat. See Fig. 5 .
6.5L (VIN P)	Under right side of dash. See Fig. 9 .
5.7L (VIN K)	Under driver's seat. See Fig. 6 .
7.4L (VIN N)	Under driver's seat. See Fig. 7 .

GMC Vandura Special G3500 1994 - SENDING UNITS & SENSORS

GMC Vandura Special G3500 1994 SENDING UNITS & SENSORS LOCATION

Component	Location
ABS Wheel Speed Sensors	On each wheel hub assembly.
Air Bag Sensors
Arming Sensor	Above transmission, at center of crossmember.
Discriminating Sensors (2)	On front crossmember, below radiator.
Boost Sensor (6.5L - VIN F)	On top right center of engine. See Fig. 8 .
Crankshaft Position Sensor (6.5L - VIN P)	Inside electronic injection pump, on right front of engine. See Fig. 9 .
EGR Control Press./Baro Sensor	On left side of firewall, near battery. See Fig. 9 .
Engine Coolant Level Sensor	In right side of radiator tank.
Engine Coolant Temp. (ECT) Sending Unit	On left front of cylinder head.
Engine Coolant Temp. (ECT) Sensor
Diesel Engine (6.5L VIN P)	On top right front of engine. See Fig. 9 .
Gasoline Engines
4.3L (VIN Z) 4L60E A/T	On top front of engine. See Fig. 1 .
4.3L (VIN Z) 4L80E A/T	On top front of engine. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On top front of engine. See Fig. 3 .
5.7L (VIN K) A/T	On top front of engine. See Fig. 4 .
5.7L (VIN K)	On top front of engine. See Fig. 6 .
7.4L (VIN N)	On top front of engine. See Fig. 5 .
7.4L (VIN N)	On top front of engine. See Fig. 7 .
Engine Speed Sensor (6.5L - VIN Y)	On top rear of engine.
Intake Air Temp. (IAT) Sensor (6.5L VIN P)	On top left center of engine. See Fig. 9 .
Knock Sensor
4.3L (VIN Z) 4L60E A/T	On top left rear of engine. See Fig. 1 .
4.3L (VIN Z) 4L80E A/T	On top left rear of engine. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	Under right exhaust manifold, above starter. See Fig. 3 .
5.7L (VIN K) A/T	Under right exhaust manifold, above starter. See Fig. 4 .
5.7L (VIN K)	Under right exhaust manifold, above starter. See Fig. 6 .
5.7L (VIN K) A/T	Under right exhaust manifold, above starter. See Fig. 11 .
7.4L (VIN N)	Under right exhaust manifold, above starter. See Fig. 5 .
7.4L (VIN N)	Under right exhaust manifold, above starter. See Fig. 7 .
Manifold Absolute Press. (MAP) Sensor
Diesel Engines	Near center of firewall.
Gasoline Engines
4.3L (VIN Z) - 4L60E A/T	On top right of engine, on valve cover. See Fig. 1 .
4.3L (VIN Z) - 4L80E A/T	On top right of engine, on valve cover. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On top right of engine, on valve cover. See Fig. 3 .
5.7L (VIN K) A/T	On top right of engine, on valve cover. See Fig. 4 .
5.7L (VIN K)	On top right of engine, on valve cover. See Fig. 6 .
7.4L (VIN N)	On top right of engine, on valve cover. See Fig. 5 .
7.4L (VIN N)	On top right of engine, on valve cover. See Fig. 7 .
Oil Pressure Sending Unit	On left rear of engine block.
Optical Fuel Temp. Sensor (6.5L VIN P)	On left top front of engine. See Fig. 9 .
Throttle Position (TP) Sensor
4.3L (VIN Z) - 4L60E A/T	On throttle body (gas), or on injection pump (diesel). See Fig. 1 .
4.3L (VIN Z) - 4L80E A/T	On throttle body (gas), or on injection pump (diesel). See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On throttle body (gas), or on injection pump (diesel). See Fig. 3 .
5.7L (VIN K) A/T	On throttle body (gas), or on injection pump (diesel). See Fig. 4 .
7.4L (VIN N)	On throttle body (gas), or on injection pump (diesel). See Fig. 5 .
5.7L (VIN K)	On throttle body (gas), or on injection pump (diesel). See Fig. 6 .
7.4L (VIN N)	On throttle body (gas), or on injection pump (diesel). See Fig. 7 .
Transmission Input Speed Sensor
4.3L (VIN Z) - 4L80E A/T	On left side of transmission. See Fig. 2 .
5.7L (VIN K) A/T	On left side of transmission. See Fig. 4 .
7.4L (VIN N)	On left side of transmission. See Fig. 5 .
5.7L (VIN K)	On left side of transmission. See Fig. 6 .
7.4L (VIN N)	On left side of transmission. See Fig. 7 .
Transmission Output Speed Sensor (6.5L VIN P)	On left rear side of transmission. See Fig. 9 .
Vehicle Speed Sensor (VSS)
4.3L (VIN Z) - 4L60E A/T	On left rear of transmission. See Fig. 1 .
4.3L (VIN Z) - 4L80E A/T	On left rear of transmission. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On left rear of transmission. See Fig. 3 .
5.7L (VIN K) A/T	On left rear of transmission. See Fig. 4 .
6.5L (VIN P)	On left rear of transmission. See Fig. 9 .
7.4L (VIN N)	On left rear of transmission. See Fig. 5 .
5.7L (VIN K)	On left rear of transmission. See Fig. 6 .
7.4L (VIN N)	On left rear of transmission. See Fig. 7 .
Water-In-Fuel Sensor (Diesel)	In fuel filter assembly, on left rear of engine compartment.

GMC Vandura Special G3500 1994 - MOTORS

GMC Vandura Special G3500 1994 MOTORS LOCATION

Component	Location
Auxiliary Cooling Fan	In front of radiator.
Blower Motor
Front	On right side of firewall.
Rear	On rear of vehicle, on roof.
Governor Motor (7.4L)	On left side of throttle body.
Injector Timing Stepper Motor (6.5L - VIN P)	On top left front of engine. See Fig. 9 .
Windshield Washer Pump Motor	In washer fluid reservoir, left side of firewall.
Windshield Wiper Motor	On left side of firewall.

GMC Vandura Special G3500 1994 - SOLENOIDS & SOLENOID VALVES

GMC Vandura Special G3500 1994 SOLENOIDS & SOLENOID VALVES LOCATION

Component	Location
Brake/Trans. Shift Interlock Solenoid	On steering column.
Boost Solenoid (6.5L - VIN F)	On top left rear of engine. See Fig. 8 .
Canister Purge Solenoid (7.4L)	On top right front of engine.
EGR Solenoids
Diesel Engines (2)	On top left side of engine. See Fig. 9 .
Gasoline Engines
4.3L (VIN Z) - 4L60E A/T	On top right of engine. See Fig. 1 .
4.3L (VIN Z) - 4L80E A/T	On top right of engine. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On top right of engine. See Fig. 3 .
5.7L (VIN K) A/T	On top right of engine. See Fig. 4 .
5.7L (VIN K)	On top right of engine. See Fig. 6 .
7.4L (VIN N)	On top right of engine. See Fig. 5 .
Engine Shutoff Solenoid (6.5L VIN P)	On top left front of engine. See Fig. 9 .
Fuel Solenoid (6.5L VIN P)	On top center of engine, on throttle body. See Fig. 9 .
Idle Air Control (IAC) Valve
4.3L (VIN Z) 4L60E A/T	On throttle body assembly. See Fig. 1 .
4.3L (VIN Z) 4L80E A/T	On throttle body assembly. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On throttle body assembly. See Fig. 3 .
5.7L (VIN K) A/T	On throttle body assembly. See Fig. 4 .
7.4L (VIN N)	On throttle body assembly. See Fig. 5 .
5.7L (VIN K)	On throttle body assembly. See Fig. 6 .
7.4L (VIN N)	On throttle body assembly. See Fig. 7 .

GMC Vandura Special G3500 1994 - SWITCHES

GMC Vandura Special G3500 1994 SWITCHES LOCATION

Component	Location
A/C Evaporator Pressure Control Switch	On A/C accumulator.
A/C Low Pressure Switch
4.3L (VIN Z) 4L60E A/T	On A/C line, on right front of engine compartment. See Fig. 1 .
4.3L (VIN Z) 4L80E A/T	On A/C line, on right front of engine compartment. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On A/C line, on right front of engine compartment. See Fig. 3 .
5.7L (VIN K) A/T	On A/C line, on right front of engine compartment. See Fig. 4 .
7.4L (VIN N)	On A/C line, on right front of engine compartment. See Fig. 5 .
A/C High Pressure Switch
4.3L (VIN Z) - 4L60E A/T	On rear of A/C compressor. See Fig. 1 .
4.3L (VIN Z) - 4L80E A/T	On rear of A/C compressor. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On rear of A/C compressor. See Fig. 3 .
5.7L (VIN K) A/T	On rear of A/C compressor. See Fig. 4 .
7.4L (VIN N)	On rear of A/C compressor. See Fig. 5 .
Auxiliary Cooling Fan
Pressure Switch	On right side of engine.
Temperature Switch	On right rear of cylinder head, above starter.
Back-Up Light Switch (A/T)	At base of steering column.
Brake/Cruise/TCC Switch	On brake pedal support bracket.
Brake Pressure Warning Switch	On proportioning valve, at left front frame rail.
Clutch/Start Switch	On clutch pedal support bracket.
Cold Advance Fast Idle Temperature Switch (6.2L)	On right rear of engine, on top of cylinder head.
Coolant Temp. Cut-Out Switch	In thermostat housing.
Dimmer Switch	On lower left of steering column.
Fuel Pump/Oil Pressure Switch (Gas)
4.3L (VIN Z) - 4L60E A/T	On top rear of engine. See Fig. 1 .
4.3L (VIN Z) - 4L80E A/T	On top rear of engine. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On top rear of engine. See Fig. 3 .
5.7L (VIN K) A/T	On top rear of engine. See Fig. 4 .
7.4L (VIN N)	On left front side of engine. See Fig. 5 .
5.7L (VIN K)	On top rear of engine. See Fig. 6 .
7.4L (VIN N)	On left front side of engine. See Fig. 7 .
Hydro-Boost Pressure Warning Switch	On hydro-boost rear inlet hose.
Oil Pressure Switch (Diesel)	On left rear of engine.
Parking Brake Warning Switch	On parking brake pedal support.
Seat Belt Warning Switch	On driver's seat belt buckle.

GMC Vandura Special G3500 1994 - MISCELLANEOUS

GMC Vandura Special G3500 1994 MISCELLANEOUS LOCATION

Component	Location
Blower Motor Resistors	On blower motor housing, in respective front and rear unit.
Data Link Connector (DLC)
4.3L (VIN Z) - 4L60E A/T	Below left side of dash, near steering column. See Fig. 1 .
4.3L (VIN Z) - 4L80E A/T	Below left side of dash, near steering column. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	Below left side of dash, near steering column. See Fig. 3 .
5.7L (VIN K) A/T	Below left side of dash, near steering column. See Fig. 4 .
6.5L (VIN P)	Below left side of dash, near steering column. See Fig. 9 .
7.4L (VIN N)	Below left side of dash, near steering column. See Fig. 5 .
5.7L (VIN K)	Below left side of dash, near steering column. See Fig. 6 .
7.4L (VIN N)	Below left side of dash, near steering column. See Fig. 7 .
Fuel Heater (Diesel)	At fuel filter assembly.
Fuel Pump Test Connector
4.3L (VIN Z) - 4L60E A/T	On center of firewall, near fuel pump relay. See Fig. 1 .
4.3L (VIN Z) - 4L80E A/T	On center of firewall, near fuel pump relay. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	On center of firewall, near fuel pump relay. See Fig. 3 .
5.7L (VIN K) A/T	On center of firewall, near fuel pump relay. See Fig. 4 .
7.4L (VIN N)	On center of firewall, near fuel pump relay. See Fig. 5 .
5.7L (VIN K)	On left side of firewall. See Fig. 6 .
7.4L (VIN N)	On left side of firewall. See Fig. 7 .
Fuel Solenoid Driver (6.5L VIN P)	On top left of engine. See Fig. 9 .
Vehicle Speed Sensor (VSS) Buffer
4.3L (VIN Z) - 4L60E A/T	Taped to harness, on parking brake support bracket. See Fig. 1 .
4.3L (VIN Z) - 4L80E A/T	Taped to harness, on parking brake support bracket. See Fig. 2 .
5.0L (VIN H) & 5.7L (VIN K)	Taped to harness, on parking brake support bracket. See Fig. 3 .
5.7L (VIN K) A/T	Taped to harness, on parking brake support bracket. See Fig. 4 .
5.7L (VIN K)	Taped to harness, on parking brake support bracket. See Fig. 6 .
6.5L (VIN P)	Under left side of dash, left of steering column. See Fig. 12 .
7.4L (VIN N) - "G" Series	Taped to harness, on parking brake support bracket. See Fig. 5 .
7.4L (VIN N) - "G/P" Series	Taped to harness, on parking brake support bracket. See Fig. 7 .