Question about Pontiac Grand Prix

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02 pontiac grand prix front end roar started about 5 days ago intermittantly. Now has got much louder and starts at about 20mph and gets louder up to about 60. Rotated tires didnt solve problem. Inspected under car dont see anything viusally wrong. Turn right or left sharp seems possibly make it quieter but not sure.

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  • cac1966 Jun 27, 2009

    how do i know which hub to replace left or right?

  • cac1966 Jun 27, 2009

    I replaced the front left hub assembly and it fixed the problem! thanks guys it was the bearings. $100 and 2 hours myself I did it not difficult.



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Engine drive shaft bearing is bad...u have from motor. left and right side shafts. and each side has a inner by motor and a outer by wheel bearing so 2 bearings on each side.. replacing both...on either side.saves from having a second job done later

Posted on Jun 26, 2009

  • Tommy Thomas
    Tommy Thomas Jun 27, 2009

    grasp and firmly shake front wheels for movement and loose sounds gl approx $300.00 job not recommended for amateurs.


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Sounds like a front wheel bearing. Pretty common. You have to replace the hub as an assembly. No servicable parts inside.

Posted on Jun 26, 2009

  • warr wiz Jun 27, 2009

    I usually put the car on a lift and run it in drive to listen. From what you describe it should be easy to hear the bad one. Make sure to shut off traction control if equipped.



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