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.
Problems for specific Pontiac Grand Prix years:
Car problem reports
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Most reported 2008 Pontiac Grand Prix problems
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
The high pressure power steering hose will commonly leak fluid; it should be replaced.
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.