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Vibration/Rattle sound inside car after transmission change?

Discussion in 'GM Powertrain' started by 04tbzr, Nov 23, 2010.

  1. 04tbzr

    04tbzr New Member

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    Finished changing my transmission this morning in my 2004 Trailblazer 4wd. Seems to be running good, no problems shifting or anything, but ever since i took it off the rack there is a big vibration sound. Sounds like its right under the shifter. At first it seemed like it was only when i was in reverse, after driving for a while it does it in drive also. Doesnt seem like a transmission problem, but funny how it never happened until changing it. Any input would be appreciated.
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