1999 GMC Jimmy Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1999 GMC Jimmy
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1999 GMC Jimmy ProblemsCheck Engine Light Due to Gas Cap Issue
A Loose or worn gas cap may cause Check Engine Light to illuminate.
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.
The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.
1999 GMC Jimmy QuestionsHow do I know if my fuel pump is affected? (1 answer)
Anytime I drive, it does not seem to hold gas in the tank. It always seems I have to keep going to the gas station. I'm not sure if my fuel pump is causing the problem
When I turn the wheel to the left, I hear a knocking sound that seems to come from the front wheel.
I also hear a thumping noise when driving like a broken belt in one of the tires, but was told that it might be the wheel bearings.