I have a 12 with the same problem I had with my 07 steering wheel clunk or rattle, the 07 I had to fix myself with muffler clamp, steeler didn't know what it was, and there telling me the same thing on this one, they can't find any bulletins on it! Any help would be much appreciated!! only 5900 miles on truck, noticed it a little bit when it was new, but now getting much worse!