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Old 01-03-2017, 07:25 PM   #2
77Z28
 
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Drives: 2016 2SS A8, NPP, Mag ride
Join Date: Jun 2016
Location: Ohio
Posts: 91
I have the groan and I took it to the dealer. The dealer talked to GM and they were told the groan was normal. I do not believe it is normal.
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