2005 Pontiac Grand Prix

2005 PONTIAC GRAND PRIX
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Noises problem
2005 Pontiac Grand Prix Front Wheel Drive Automatic 52,400 miles

Not sure how to discribe the noise, but when i start my car up after its been sitting for a while it makes a humming noise everytime i hit the gas. What could this be ? And how can i fix it.
Nov 22, 2009 at 1:26 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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