I took my 2012 r/t Durango to the shop last week. I have a thumping or a rattle in the rear. I mention it last week. after 3 hours at the garage. I suggested to the mechanic to look for TSB on it. Low and behold they found one on 2012 with load leaving suspension. Anyone out there that has a lot of racket coming from the rear. They tell me that they need to replace the rear shocks. This should cure my problem. I hope so the noise is aggravating!!