1998 Pontiac Grand Prix GTP Repair and Maintenance Costs
A guide to repairs, service, and maintenance costs for your 1998 Pontiac Grand Prix GTP
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1998 Pontiac Grand Prix GTP ProblemsIntake Manifold Gasket May Leak Coolant or Engine Oil
The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Running the engine with a coolant/oil mix may result in engine damage. Replacing the intake manifold gasket should correct this issue.
The fuel pump may fail causing engine to stall and not restart.
1998 Pontiac Grand Prix GTP QuestionsCar died on me while driving now has bad knocking sound (1 answer)
Could be the super charger could be a rod knocking .
When the window is down on the driver's side the automatic locks will Unlock and keep trying to unlock them selves. Replaced the unlock module and cleaned the battery post and can't find a short anywhere