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2001 Pontiac Grand Prix Loud vibration when driving.

Tiny
DAFNE2008
  • MEMBER
  • 2001 PONTIAC GRAND PRIX
Noises problem
2001 Pontiac Grand Prix Automatic 78000 miles

The car starts just fine, but when I start going about 35mph I start hearing a loud humming noise. It's gradually getting worse and it's even louder than the radio. I can even feel it in the pedals now as well. This started happening after I bought 4 new tires, which I recently had rotated and I was told everything was "fine." This noise has to be coming from somewhere. What do you think is happening?
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Friday, November 7th, 2008 AT 7:43 PM

1 Reply

Tiny
MMPRINCE4000
  • MECHANIC
  • 8,549 POSTS
If the noise started after the tire purchase, then it is logical to assume the tires are the problem.

If they have a rotation mark on them, make sure they are on the correct side and rotating according to arrow on tire.

Make sure they are properly balanced and the alignment is correct.
Inspect the tie rods, ball joints and bearings for excessive play.
If OK then I would insist the tires be replaced, if the installer will not help, contact the manufacturer directly and complain.
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Monday, November 10th, 2008 AT 10:27 AM

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