Question about 2001 Pontiac Grand Prix

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What causes the brake pedal pulsates occasionally when stopping the car.The car is a 2001 Pontiac Grand Prix GT and somtimes(about four times a day the brake will have a pulsating feel in the pedal along with a little sound in the front brakes.

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When you put your wheels on , most people do not realize that the wheels need to be torqued down. A lot of mechanics just use there air gun or brute force to put a wheel on a disc brake. If the bolts are over tightened or unevenly tightened the disc will warp. That is what is causing the pulsing when you brake. The only way to fix the pulse is to put on a new disc and torque the wheel correctly. Having the disc turned will only amplify the problem. You need to replace the warped disc with a new one.

Posted on Sep 16, 2010

  • Lance Thompson Oct 08, 2010

    This happened to me and my rotor was bad. Had to replace it. I have a 2001 Grand Prix GT as well.

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If you have ABS on this vehicle which these models do, the brakes will ulsate if the pedal is depressed quite hard.

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