Thanks for all the reply's . I don't see any tunnel to driveshaft contact and I know from past experience until the manufacture tells the dealer how to fix it It never does get fixed. So I am waiting on a Tsb . Thanks all Happy New Year.Mac
Just to update since the tempeture has stayed below freezing the noise is gone. So this has something to do with it. Mac
Kids I couldn't take the knock anymore because of my OCD . I traded it in today at a loss . Good luck all I already miss it but I was obsessing over it to much and it was becoming to much for me. Mac
2014 cts-v sedan