Joined: Mar 2017

Posts: 5

Likes: 0

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 ?

Joined: Feb 2017

Posts: 6,207

Likes: 689