Transmission clunk during acceleration - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 04-16-2009, 03:05 AM   #1
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Default Transmission clunk during acceleration

I've noticed ever since I bought this car about a year ago that just about every time I pull away (like at a stop sign or red light) there is this one, and only ONE, clunk sounds that occurs, and then I continue to accelerate. For instance, I'll press the gas and accelerate for a split second, then the clunk, then I'll continue accelerating (no pause in acceleration when the clunk occurs, though). It'* also much more pronounced if I do a quick "from-reverse-into-drive-then-go" maneuver (if you know what I mean). The transmission works great so I'm not sure what to think. I'm having a hard time describing this so if you need any clarification, feel free to ask.
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Old 04-16-2009, 07:06 AM   #2
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maybe dumb but possibly bad motor mount?
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Old 04-16-2009, 08:10 AM   #3
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Sounds like a bad mount. Check the mount on the front left side of the engine.
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Old 06-17-2009, 03:08 PM   #4
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After more research it'* definitely the motor mount. The title of this thread is sort of misleading now.
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Old 06-17-2009, 09:18 PM   #5
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happening to me as well but feels like the tranny'* doing the clunk after accelerating from a red light, doesnt clunk when shifting gears only Sometimes when accelerating
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Old 03-17-2010, 09:40 PM   #6
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Well. It'* not the mounts, they all just got replaced (or checked).
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Old 03-18-2010, 07:18 AM   #7
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CV shaft keeps popping into my head for some reason.
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Old 03-18-2010, 11:12 PM   #8
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Quote:
Originally Posted by Geforce View Post
happening to me as well but feels like the tranny'* doing the clunk after accelerating from a red light, doesnt clunk when shifting gears only Sometimes when accelerating
That'* exactly what I'm getting. The harder I accelerate off the line the more likely it is to happen.
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