Question about 2002 Pontiac Grand Prix

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Why is the left front tire thumping and the brake pedal vibrating when I stop

Replaced rotor and pads , abs light on vibration in pedal and thumping in left front wheel

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  • Pontiac Master
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ABS thinks you are skidding, and is applying the brakes on and off. Likely one of the ABS sensors is bad.

Posted on Apr 10, 2015

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Posted on Jan 02, 2017

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Since the rotor isn't warped. Do you have grooves in the rotor? Are the pads evenly worn? You a bad front 4X4 C/V shaft will also cause this reaction.
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2004 Saturn Vue Brakes


The vibration is caused by the rotors being warped. Remove the front tires and check the front brake pads. Replace if needed. This is a pretty straight forward job. The rotors are "fall off" rotors and you won't need anything special tool wise.

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