Driveline lash/clunking noise - Chevy Cobalt SS Forum : Chevrolet Cobalt SS Forums
 
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post #1 of 6 (permalink) Old 12-19-2011, 02:15 PM Thread Starter
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Driveline lash/clunking noise

I don't have a dealer problem so much as an annoying driveline clunking problem.This is most pronounced when shifting from 1st to 2nd, but you can hear it in other gears if you listen. If you are super smooth you can engage the gears w/o this noise, but it takes a determined effort.

So is this normal? Do we just live with the clunking noise and learn to love it? I took the issue to my local dealer a couple of weeks ago, and they didn't think it was unusual, and that I should just monitor it!

Is this normal, and what exactly is it that CLUNKS ?
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post #2 of 6 (permalink) Old 12-19-2011, 11:01 PM
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i think ur dealer is high dude there should be no clunking who the hell has ever heard of that being normal

435whp 402tq with the HAHN RACECRAFT SUPER 20G TURBO KIT
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post #3 of 6 (permalink) Old 12-20-2011, 12:46 PM
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yea i would def take that back to them and have then test drive it.

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post #4 of 6 (permalink) Old 12-21-2011, 03:05 PM Thread Starter
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Drivline lash/clunk

Thanks for the comments. I'd read on another forum that some people agree this driveline lash noise is "normal"! I don't think so either. I'm going either back to this dealer or another one and insist on a test drive while I go along.

cw
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post #5 of 6 (permalink) Old 01-17-2012, 04:50 PM Thread Starter
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Took the car into a 2nd dealer and had the rearend/diff mechanic drive it. He said that most all of these front wheel drive Cobalts have a slight lash or noise in the drivetrain when you release the clutch and the gearing responds. He claimed that similar noises occur on many other cars , but you can't hear it as well because of better sound insulations!

I'm still not sure if I believe this. A definite clunking noise on release of the clutch and driveline engagement doesn't seem totally normal to me. I'll admit that the mechanic seemed to be a smoother driver than I am, and the noise was attentuated quite a lot by smoother clutch engagement. I'm still going to have yet another dealer look/listen to it.

It would help if anyone else has or had a similar problem and how/whether it was resolved?

thanks,
cw
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post #6 of 6 (permalink) Old 01-17-2012, 05:29 PM
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Sounds like slop in the mounts. Try a upper engine mount and TTR STOP mounts.... www.TurboTechRacing.com

-Aaron

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