1999 Pontiac Grand Prix GTP Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1999 Pontiac Grand Prix GTP

1999 Pontiac Grand Prix GTP Problems

Water Pump May Fail Prematurely

The water pump may develop a coolant leak resulting in an engine overheating condition.

Intake Manifold Gaskets 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.

Noise from front section of supercharger
The supercharger may develop a noise in the front section of the supercharger assembly. The is due to a worn coupler. Our technicians tell us that a remanufactured coupler section is available from aftermarket suppliers.

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1999 Pontiac Grand Prix GTP Questions

How can we get the obd to read? (1 answer)

We have checked our fuses and switched them out. When we check it with our computer it turns on but when we take it to the emissions we can't get it to read.

ac / heater doesnt work properly (1 answer)

so i bought my car used and when i turned on the ac it didnt work till i put it on level 3 and now it wont work till i put it on max. whats the reason for this?

What would cause the HUD to scramble when the car is shifting into overdrive. (1 answer)

We think we are having tranny issues, and noticed that the HUD scrambles up and down when it is shifting into overdrive.

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1999 Pontiac Grand Prix GTP Reviews

Greaat Car Never Experienced Power Like This Before..Will Be Even Powerful After Repairs

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