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- - Extreme vibration (https://chevroletforum.com/forum/cavalier-12/extreme-vibration-94220/)

Shep6654

February 12th, 2019 8:26 PM

Extreme vibration

My 02 Cavalier vibrates violently when heater fan is turned on. It doesnt always do it but when it does the whole car shakes bad & it is very loud. When I get up to the speed of about 38mph it stops. Also decelerating causes it to start again when I get below a certain speed. Never have seen or heard of this before. What is going on ?

mountainmanjoe

February 12th, 2019 11:14 PM

See if the headlights dim at the same time. If so, your alternator might not be able to keep up.

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