Question about 2006 Chevrolet Cobalt

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Rattling sound in the front

There is a slight knocking/rattling sound in the front end of my cobalt, most noticeable on bumpy roads. Recently had brakes, rotors, control arm shaft, bushings, struts replaced in the hopes that one of those were the problem. They weren't. Then I thought it might be the steering rack, but the wheel feels fine and there's nothing leaking. Then it was suggested to me that I might just have a loose nut or bolt in the engine bay. Anyone know anything about this sort of problem (the rattling)?

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My daughter has a Cobalt and it does the same thing! It drives me crazy when I drive it. If you find anything out please share.

Posted on Jan 03, 2013

  • Noah Rockmore Jan 03, 2013

    debbiej7777, I've been researching the hell out of this problem and what I've found is that it's a very, very common problem with cobalts, that apparently no one has been able to solve. I personally had my brakes, rotors, struts, mounts, control arm shaft and bushings replaced and the rattling is still there. I've read others say they've also had their steering rack and column replaced and the rattling persists. Now I've just read that loose motor mount bolts might be the cause. But I've checked mine and they're fine. I'm running out of things to inspect/replace in my car! Most of the forums I've visited, as I said, say it's a very common thing, and not serious (as far as the car's safety is concerned). I don't know, I'm going to keep looking just in case. I'd hate for my car to start flying apart on the freeway one day.

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dtowner65
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SOURCE: 2006 hhr rattling in front end

When you changed out the struts, did you also replace the Strut Bearing Mounts that mount the struts to the strut towers on the car? These things are notorious for making the rattling sound.

Posted on Apr 30, 2012

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