Hey all, I posted the other day about a clunk. I thought it was my slip joint on front drive shaft, but since I took it off and the clunk is still there I figure it's not the problem. The clunk is (I think) in the rear end. I can feel it through the whole truck. I popped the cover on the old 10 bolt and everything looks brand new. it's got 3.07 gears(yes, it's a powerhouse) and they seem to be in good shape. Could this be a u-joint? I've had them break, tick, and even explode but I've never had them clunk. I'm also having transfer case problems(pops out of 4low) but that only seems to affect low range. Could transfer problems affect 2hi operation, or is that just something else to suck money out of me? The truck is a 91 with a 350 and the np 245 case. I can really use the help. Thanks in advance.