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.
Resources for the Repair and Maintenance of your 1991 Chevrolet G Series Van (G20)
1991 Chevrolet G Series Van (G20)
1991 Chevrolet G Series Van (G20) Problems
A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.
Our technicians recommend flushing the brake fluid every 60,000 miles. Brake fluid that is dirty may cause problems in the brake system.
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.
An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.
1991 Chevrolet G Series Van (G20) Recalls (Recent)
Summary: INSTALLATION OF SAFETY BELT ANCHORAGE BOLTS FAILED TO COMPLY WITH FMVSS 210.Learn more »
1991 Chevrolet G Series Van (G20) Questions and Answers
When I backed out of my drive way this morning my brake lite came on. What is the most common reason? Dealer just checked my brakes for wear and said front brakes pads were 70% worn and the back sh...
what do the 3 switches on the overhead consol operate?
need computer codes flashes 6 times what does this mean
computer light flashes on dash 6 times. what does it mean.