1991 Chevrolet G Series Van (G30) Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Chevrolet G Series Van (G30)
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1991 Chevrolet G Series Van (G30) ProblemsFlush brake fluid every 60,000 miles
An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.
The distributor may develop internal faults. This can cause a rough running engine or stalling condition, the Check Engine Light may or may not illuminate. Our technicians tell us that the distributor should be overhauled or replaced to correct this concern.
1991 Chevrolet G Series Van (G30) QuestionsWill a 91 G30 Chevy van auto transmission fit a 86 Chevy G30 diesel engine? (2 answers)
It is a problem getting the 4wd to work, it just slips out of position.