1994 GMC Rally Wagon 3500 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1994 GMC Rally Wagon 3500
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1994 GMC Rally Wagon 3500 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.
1994 GMC Rally Wagon 3500 Questionsfuel pump problem (1 answer)
how do I access the fuel pump? do I need to purchase the entire assembly or just the pump and use the old attachment parts?