Thanks guys. I'm pretty sure it is not the exhaust. I can't find the TSB on alldata, I don't suppose you have a copy? Mine is the 722.6 tranny. What are the drive plates in the unengaged clutch packs? and are they meant to rattle? (Sorry if this sounds like I am asking for a treatise on the operation of an automatic transmission.)

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JJ Rodger
2013 G350 Bluetec
1999 SL 500
1993 E300 diesel T
1990 190