1991 GMC Vandura 1500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 GMC Vandura 1500
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1991 GMC Vandura 1500 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 1500 QuestionsTHROTTLING PROBLEM (1 answer)
MY VAN RUNS GREAT BUT RECENTLY I HAVE THROTTLING PROBLEM THE WILL CUT OFF WHEN STOPS OR EVEN SOMETIMES WHEN I PUT IT DRIVE I CHANGE PLUGS,WIRES,ROUTER, DISTRIBUTER CAP,TPS AND THE AIR CONTROL VALVE AN TI STILL HAVE THROTTLE PROBLEM PLEASE HELP THANKS IN ADVANCE