1996 Pontiac Grand Prix Problems
RepairPal has identified the most common problems with the 1996 Pontiac Grand Prix based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.
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.
Illumination of the Check Engine Light can be caused by a loose or worn gas cap.
One or more of the power windows may stop working due to a failed window switch. Failed switches will require replacement.
The high pressure power steering hose will commonly leak fluid; it should be replaced.
The upper intake manifold gasket and/or a PCV vacuum lines/hoses can develop vacuum leaks with age. This type of leak can result in a higher that normal or rough idle.
The spark plugs should be replaced every 100,000 miles. Our technicians recommend replacing the spark plug wires also at this time.
An engine oil leak may develop from the rear of the engine. This is commonly caused by a failed oil pump drive o-ring seal. The leaking o-ring should be replaced to correct this concern.
An engine oil leak may develop from the oil pump drive O-ring. This can often be confused with an intake manifold gasket leak. Careful inspection is required to determine the exact cause of the leak. Replacement of the failed 0-ring will commonly correct this concern.
Contaminated brake fluid can cause problems in the brake system and it should be flushed every 60,000 miles.