Well it is moving away from a possible trans problem(7000r4) to a good chance that it is a trans problem. I removed my transmission pan yesterday and found 1/8"-1/4" chunks of metal in the pan. I have talked to a friend that has a 700r4 and he had the same noise and he just bought a new transmission ($$$).. I am going this week to talk to a couple of local transmission shops to get some pricing and general info. I just wanted to know a couple of things so I don't make a fool of myself. Buying a rebuilt trans(700r4) vs. removing my old trans and having them do a full rebuild? Does a shift kit(not for performance but durability) make a noticable difference with a diesel,is it worth the extra money? I have read quite a bit on the 700r4, some people say it really isn't strong enough to last for long periods on a diesel and some say you definetly need a good trans cooler or certain stronger parts. Any thoughts or opinions?? Finally any personal opinions appreciated, right now I have more time then money so suggestions and input is welcome Thank you.