1994 GMC Vandura 3500 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1994 GMC Vandura 3500

1994 GMC Vandura 3500 Problems

The fuel pump may fail causing the engine to stall and not restart. Our technicians recommend replacing the fuel filter every 30,000 miles to help prevent undue strain on the fuel pump.

The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.

A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.

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1994 GMC Vandura 3500 Questions

When I start my truck in the morning it will not shift out of low gear. when it gets to 170 degrees I can shut the truck off and turn it back on and it will shift normally. But if I do not shut the truck off it will not come out of low gear.

when i goin the the hiway and is an slope , the speed go down drasticly from 65 to 35 mph., lus power..

Our van will overheat frequently and VOMIT out anti-freeze through the overflow. Very annoying. I don't think it's the head gasket, as it doesn't do it constantly.... Thermostat? Water pump? Something else?

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