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<blockquote data-quote="vellocet" data-source="post: 5994242" data-attributes="member: 604302"><p>You need some sound deadening. I used raamat, but there's plent of others. I'm on my phone, so no copy pasting google links, search for sound deadener show down. Interesting read.</p><p></p><p>Also take apart your trunk (do cobalt's have a trunk or a hatch?) and look for anything loose. If you have a trunk, take the carpet off the top of the boot (area behind your rear seat where factory rear speakers usualy go) and see if there's anything to blame there. If you can hear it, you can find it, and fix it.</p><p></p><p>Probably will be best to wait till you sound deaden to do this stuff.</p></blockquote><p></p>
[QUOTE="vellocet, post: 5994242, member: 604302"] You need some sound deadening. I used raamat, but there's plent of others. I'm on my phone, so no copy pasting google links, search for sound deadener show down. Interesting read. Also take apart your trunk (do cobalt's have a trunk or a hatch?) and look for anything loose. If you have a trunk, take the carpet off the top of the boot (area behind your rear seat where factory rear speakers usualy go) and see if there's anything to blame there. If you can hear it, you can find it, and fix it. Probably will be best to wait till you sound deaden to do this stuff. [/QUOTE]
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