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722.6 Trans Slipping Code 147
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10-02-2008, 07:49 AM
vince
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Join Date: Jan 2000
Location: Chesapeake, VA
Posts: 438
The groan and vibration could be caused by the torque converter lockup clutch. It seems to happen more when the transmission is cold. The dealer did a software update on my 2000 C280 and it helped quite a bit.
vince
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