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 Problems

Driveability Problems Due to Internal Distributor Fault

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.

Flush brake fluid every 60,000 miles

Our technicians recommend flushing the brake fluid every 60,000 miles.  Brake fluid that is dirty may cause problems in the brake system.

Highter Than Nornal Idle Due to Vacuum Leak

An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.

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1994 GMC Rally Wagon 3500 Questions

fuel 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?

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