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Discussion Starter · #1 ·
I would like to know if anyone has experienced this problem. While driving 50+mph sometimes when hitting a bump car goes into a violent chatter. You have to slow down to about 20mph for it to stop. Sometimes hitting another bump will make it stop. Flooring it will make it stop. Has been to dealer once. They had it for 2 weeks and said they couldn’t get problem to repeat. When I picked it up it did it to me 5 miles from the dealer. I have a video of it if I can figure out how to upload it.
 

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Just guessing: that sounds like a suspension issue since it happens after hitting a bump. It could be as simple is a loose wheel (tighten the lug nits on all four) or something in the alignment. Is there another GM dealer nearby (so that any repairs are covered under warranty) or a good, independent tire shop that could check the alignment?
 

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Discussion Starter · #3 ·
Just guessing: that sounds like a suspension issue since it happens after hitting a bump. It could be as simple is a loose wheel (tighten the lug nits on all four) or something in the alignment. Is there another GM dealer nearby (so that any repairs are covered under warranty) or a good, independent tire shop that could check the alignment?
Tires were worn out so I replaced the tires before bringing it in to rule that out. My plan is to bring it to the dealer I purchased it from. However an option would be a Chevy dealer in the next town from me.
There doesn't seem to be a way to upload a video on here to show what it does. It's the strangest thing I've ever seen. Otherwise it drives great.
 

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Well I don't know if this could be the problem, but I just had one of the cv drive shafts replaced under a service bulletin.
When I had the car in last month for an oil change I mentioned a sound like something was loose in the front end.
The tech working on the car found the bulletin and ordered the parts.
Solved my "clunking" problem.
 
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