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1990 GMC Rally Wagon 1500 Repair and Maintenance Costs

A guide to repairs, service, and maintenance costs for your 1990 GMC Rally Wagon 1500

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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 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 distribu...
An engine vacuum leak may develop from the throttle body gasket causing a higher than normal idle speed. Failed gaskets should be replaced.
How soon will I bring to the mechanic with the CodePO466.