GMC Vandura and Chevrolet G20, G30 (1988-1992) Fuse Diagram

Fuse box diagram (fuse layout), location, and assignment of fuses GMC Vandura G1500, G2500, G3500, and Chevrolet Van G20, G30 (1988, 1989, 1990, 1991, 1992).

GMC Vandura (1988-1992)

Chevrolet G20, G30 (1988-1992)

Checking and Replacing Fuses

The wiring circuits in your vehicle are protected from short circuits by a combination of fuses, circuit breakers, and fusible links. This greatly reduces the chance of damage caused by electrical problems.

Look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.


  • Before replacing a fuse check that the key has been removed from the ignition and that all the services are switched off and/or disengaged.
  • Do not repair fuses and never replace a blown fuse with one that has a higher amp rating. This can cause damage to the electrical system and fire.
  • Never replace a broken fuse with anything other than a new fuse. Use always an intact fuse of the same color.
  • If a fuse blows again contact a qualified service center.

Passenger Compartment Fuse Box Diagram

It is located under the dashboard on the driver’s side.

Passenger Compartment Fuse Box Diagram

ACircuit Protected
120Horn, Glove Box Light, Clock, Electric/Vanity Mirrors, Cigarette Lighter
220Parking Lights, Light Switch, Tail Lights
310Electronic Control Module (ECM)
420Gauge, Cruise Control, Ashtray Light
520Ignition, Ignition Switch, Turn Signal Flasher, Back-Up Light Switch
610Electronic Control Module (ECM), Ignition
710Daytime Running Lights
85Rear Air Conditioning Switch Light, Rear Auxiliary Heater Switch, Dome Light Switch, Cigarette Lighter, Convenience Tray Light, Foglight, Mirror Switch Light, Auxiliary Heater, Rear Air Conditioning
925Auxiliary Heater and Air Conditioning
1020Heater, Air Conditioning
1130Circuit Breaker: Power Windows
1220Fuel Pump
1330Circuit Breaker: Power Seat, Power Door Locks
1420Hazard Flasher, Stop Lamps
1625Windshield Washer/Wiper Motor and Switch
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