1990 GMC Vandura 2500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1990 GMC Vandura 2500
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1990 GMC Vandura 2500 ProblemsIntake Manifold Gaskets May Leak Coolant or Engine Oil
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.
An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.
1990 GMC Vandura 2500 QuestionsThe van runs fine when idling , in gear it hesitates and will not accelerate (1 answer)
1988 gmc vandura I'd it on a timer or something the on Motion won't shot it off
put new rods in and need to know how tight I need to set them