94 SSE Vibration at shift points - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-20-2009, 03:42 PM   #1
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Default 94 SSE Vibration at shift points

1994 Bonneville SSE non-supercharged 160K Automatic Trans

When the car shifts 1-2, 2-3 I feel a vibration similar to a wash board type vibration from a road surface. It only lasts about 1 second and then goes away.

I can’t say it does it all the time, mostly after a few miles of driving. The same is true for the type of acceleration. It is more pronounced on a hard acceleration but not always.

Anyone got any ideas…motor/transmission mounts….axles…..and god forbid the transmission.
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Old 05-20-2009, 03:47 PM   #2
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Sounds like a trans mount. Check them all over real good. The front drivers side is good for what you describe.
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Old 05-20-2009, 04:01 PM   #3
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Been a while since I had a mount issue. I'm kinda thinking TA mount. (in front of the water pump)

Mainly because when it goes..it puts the metal on metal for acceleration.

When you follow Dan'* advice and check them all...you should find the issue.
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