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2002 Pontiac Grand Prix GT 2dr Coupe

2002 Pontiac Grand Prix
Trim Info:
Front Wheel Drive, 2 Door Coupe, Mid-Size
19 mpg city / 29 mpg hwy
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February 15, 2009, 5:57 pm


Question: low engine power

my traction control kicked on and took my engine on my 2004 pontiac grand prix to low power. the engine wouldn't let me get higher than 35 mph. the computer was reset but the engine is still in a low power mode. the garage has had it for 10 days and still no resolution. any suggestions?

April 13, 2009, 9:17 pm

Chris M

My 2000 Firebird had the same thing happen it was a sensor from the gas pedal mine would do after it would run hot for a while, it cost me $700.00 to get the sensor replaced but the problem has been fixed now for 5 months.

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May 10, 2009, 12:55 pm


I had this problem with my '05 G6... it has to do with a Accelerator Pedal Position Sensor. There is a wire that grounds to the APP sensor and something else.. (sorry not a car guru) and when it gets wet it causes it to lose connection. I just got the wire dried out and sealed. I have had no problems since.

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