Weird clunk when first going in reverse after cold - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-21-2004, 02:34 PM   #1
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Default Weird clunk when first going in reverse after cold

When ever i start my car "cold" and im backing out of the driveway, or out of a parking lot i get this weird clunk noise that sounds like its coming from the rear. i also get a similar noise when i get out of my car. The thing is, if i push on the front or rear of my car to make it bounce up and down, it does not make any noise at all? i know this isnt a very thorough \description of whats going on but any help would be appreciated.


Its a 1992 bonneville se with about 140,000 miles on it
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Old 06-21-2004, 02:41 PM   #2
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I dunno if its the same problem but when the donut at the top on my exhaust by the manifold went bad my car would clunk going into reverse.
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Old 06-21-2004, 02:46 PM   #3
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Well, if it'* coming from the rear you've eliminated about 50% of the possibilities on where this noise is coming from. Here'* my laundry list of targets to shoot for. The exhaust, rear brakes, rear suspension, that long lost soda bottle in the trunk. Good Luck.
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Old 06-21-2004, 02:52 PM   #4
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thanks guys. i know this is a little off topic but should i be able to burn out in my car stock? it used to be my dads car and i could have sworn i was burning out in it 3 years ago, but now i cant even come close to making the tires squeal.
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Old 06-21-2004, 06:25 PM   #5
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Default clunk

GM has a bulletin on this condition. My SE does it too sometimes.
Its coming from the pressure in the Gas tank.
Nothing to be concerned about ......so the dealer said.
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Old 06-21-2004, 08:49 PM   #6
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Bulletins
53-12-12A Pop/ Thumo at left rear. No corrective action.
73-63-12 Pop/ Flutter / tick when driving. No corrective action.
47-60-06D Exhaust seal Front Seal
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Old 06-21-2004, 08:58 PM   #7
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excellent. i was about to reply and say sometimes it will happen after i back into the street then start moving forward, but it sounds like its nothing to be worried about. thanks
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