I am so glad I found this site. To hear of all the complaints, I thought for sure I bought a lemon. I brought my car back for service the first week I had it and claimed that possibly a u joint or the tail shaft trans mount had broke. I got the same response from the service department that you guys are saying " thats normal". Normal, thats crap. Speaking of being embarrassed, I hate driving down my subdivision street its sounds horrible.
General Motors do something about it!