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#1
06-23-2009, 08:58 PM
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2007 Cobalt LS - Excessive Road Noise
I have a 2007 Cobalt with 20K miles - salvage title so no factory warranty (body damage only, no frame / powertrain damage). problem is excessive road noise, starts at 25MPH and gets worse up to crusing speed of 75MPH. I suspect a bad wheel bearing based on already having 2 of these replaced on previous GM cars (99 Grand AM, 2003 Impala) with similar sounds. How do I confirm that it is indeed a bad wheel bearing, and how do I determine which one it is? I suspect right front based on where the noise sounds like it's coming from, but that's a guess. No change in sound turning right or left at speed, no obvious difference in play wheel to wheel when jacked up. Thanks
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#2
06-24-2009, 06:11 PM
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Re: 2007 Cobalt LS - Excessive Road Noise
Quote:
__________________
'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system
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#3
06-24-2009, 07:08 PM
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Re: 2007 Cobalt LS - Excessive Road Noise
Thanks for the reply. To clarify, there was no play at all in any of the wheels when I tugged top to bottom and side to side. I tried this as well the last two times that I had to have bearings replaced, no real indication from the feel in those cases either. In both of those cases I could pretty well guess which side was bad based on the difference in volume from the driver to passenger side (the human ear is a marvelous thing!) - no such luck this time.
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