This noise is driving me crazy.. 04 gmc 3500 dually. After you take off and let your foot off the accelerator theres a clicking noise and it will do it everytime. I had a problem with the tranny not down shifting and it would get stuck in high gear and if I put it in park or reverse the driveshaft would spin like crazy. In order to fix that I replaced the valve body and then it would shift fine. Then I noticed a grinding that was coming from the tranny so I took to a tranns shop and Just had tranny rebuilt, new transfer case and new u joints. And it’s still making thag noise so I guess it’s safe to say that it’s something else, but what in the world is it any suggestions??