Shaking at high speeds

Asked by Oct 29, 2016 at 02:33 AM about the 1999 Pontiac Grand Am

Question type: Maintenance & Repair

When I get up over 60 mph my car vibrates on and
off. It vibrates for about 3 seconds then stops for
about 3 seconds. Over and over until I slow down.

1 Answer

98,085

Your tires could be worn or out of balance, struts could be worn or defective. You may need a wheel alignment...

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