1999 Pontiac Grand Prix Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1999 Pontiac Grand Prix
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1999 Pontiac Grand Prix ProblemsErratic Shifting of the Automatic Transmission
The transmission pressure control solenoid may fail causing erratic shifting. Our technicians tell us that partial dis-assembly of the transmission is necessary to replace a failed pressure control solenoid.
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. Our technicians tell us that operating the engine with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.
The high pressure power steering hose will commonly leak fluid; it should be replaced.
1999 Pontiac Grand Prix QuestionsWhy does my low coolant light come on even though there is plenty of coolant? (1 answer)
The light only comes on when I first start up, then goes off, but sometimes comes back on after I've driven for over 30 minutes.
car was stalling when i first start driving not hot yet then it tries to start but wont turn over like its not getting gas what do i check
1999 Pontiac Grand Prix RecallsEngine Oil Leaks Onto Exhaust Manifold
Engine oil can leak onto the exhaust manifold, causing a fire hazard. This concern was addressed in previous recall notifications, but improvements to the repair have been made. Dealers will make improved repairs free of charge to resolve the concern.