1999 Pontiac Grand Prix GTP Repair and Maintenance

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

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1999 Pontiac Grand Prix GTP Problems

Stalling Due to Mass Air Flow or Crankshaft Position Sensor Failure

The mass air flow or crankshaft position sensor may fail causing the engine to intermittently stall. It may be necessary for the engine to cool down before it will restart.

Inspect transmission/fluid every 30,000 miles

You may be able to prevent transmission problems by servicing the transmission and inspecting the fluid every 30,000 miles. If the fluid is dark or burned then the transmission system should be completely flushed.

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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