1996 Pontiac Grand Am Cars shake when brakes are applied.

Tiny
NICOJR
  • MEMBER
  • 1996 PONTIAC GRAND AM
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 134,256 MILES
I had just recently purchased a 96 pontiac grand am and a few weeks later it had started to shake when I applied the brakes. Just a couple weeks ago something also started to knock when it shook under the front end of the car. I was wondering if you had any idea of why it would be doing that.
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Tuesday, May 12th, 2009 AT 1:31 AM

5 Replies

Tiny
RASMATAZ
  • MEMBER
Sounds like brake rotors are warped get it check
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Tuesday, May 12th, 2009 AT 1:33 AM
Tiny
NICOJR
  • MEMBER
Thank you would you happen to know how I would be able to check them by my self. I don't have the money to go get it looked at.
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Tuesday, May 12th, 2009 AT 1:47 AM
Tiny
RASMATAZ
  • MEMBER
You need a micrometer to measure the thickness of the rotor/dial gauge -Out of roundness/parallelism
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Tuesday, May 12th, 2009 AT 2:31 AM
Tiny
NICOJR
  • MEMBER
Ok thanks is there any other way I could check it? Like taking it off and looking at it?
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Tuesday, May 12th, 2009 AT 1:02 PM
Tiny
BERNBYE
  • MEMBER
Hopefully you had this issue corrected by now, but If you were still looking for answers I would suggest some simple tests to be performed. Driving at slower speed and applying the brakes will cause pulsating pedal which means the pedal would push back up for warpped rotors. If there is a hard shake the rotors could be worn usually on the back side where the pads are applied by the caliper piston. With your fingres you could feel the rotor, if they are not smooth and have rough worn grooves the rotors will require replace. Also know dirty pads and hot spots from emergenct quick braking (rotor Hot spots) could also contribute to this shaking as well. Just know that is does not cost anything to take rotors & Brake pads to a certifide Auto Parts Store for turning and examination, they will have the tools to determine if the rotors can or cannot be turned. If they can this rework cost could be compared to new part purchase price to allow you to determine a best corrective action on your repair.
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Monday, March 18th, 2013 AT 4:13 AM

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