The front u-joint on my rear drive shaft has busted twice in the last year. Once off road and the last time on road. It just happened the other day so I drove home in front wheel drive. I have noise comming from the front end or transfer case. Driving along the truck would go clunk and disengage momentum. I would let up on the gas and it would reingage and then it would disingage again. This seems to be getting worse and worse. Could my locking hubs be going bad, my front end or my transfer case. It shifts in and out of 4 wheel drive without problems. 73 with a NP203. 4 inch lift.
