1991 GMC Vandura 3500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 GMC Vandura 3500
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1991 GMC Vandura 3500 ProblemsReplace Fuel Filter Every 30,000 to Prevent Fuel Pump Failure
A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.
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.
1991 GMC Vandura 3500 QuestionsVan keeps throwing Serpentine belt - any ideas? (2 answers)
When we purchased the van, the serpentine belt began coming off after hitting a large patch of water. Father-in-law, who was very mechanically savvy, said van had larger than normal alternator and needed a 955 belt instead of the recommended 945. Put on 955, ran great until a week ago, belt cam...
It a passenger truck with no reverse. It runs forward ok but I want to replace the transmission instead of rebuilding it. Thanks.