2002 Pontiac Grand Prix Logo
Clyde Davis Posted on Jun 03, 2015
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Making a load roaring noise when driven

I changed rotors and check wheel bearings

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Randy Ohler

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  • Pontiac Master 14,585 Answers
  • Posted on Jun 03, 2015
Randy Ohler
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Three things can cause this sound. Transmission, axles, or bearings. To check bearings and axles. Find an empty parking lot and do tight circles, If it gets loader going to the left, it is the right bearing. And vice versa. If it consistent both ways, check both CV axles for sloppiness. I would replace them both. The transmission has to be checked on a lift(tires of the ground) and use a stethoscope and listen to where the noise is coming from. If the noise goes away on the lift at low speeds. It is a bearing or axle. Bearings will start making noise at higher speeds. Also check with the stethoscope.

Ronnie Wilson

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  • Master 1,596 Answers
  • Posted on Jun 03, 2015
Ronnie Wilson
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