I have something like a bearing noise in the front end. Seems around the front diff to me. I changed both hubs, inner diff bushings and seals with a bit of success but there's still a noise.
I'm running at/ko 245/70R16LT at 50psi. I decoupled the left cv from the intermediate shaft and there was a bit of rust but nothing major. I reassembled the splines using a mix of grease and anti-seize (make my life easy next time) but there's still some bearing noise!!!! It drives me crazy!!! 
It starts around 40mph and fade around 65mph. Hard to tell what it is. There's a bit of play in the cv but the boots are intact and I don't do much wheeling. Mostly used on highway. Any idea before I get really upset and start disassembling that evil machine one bolt at a time???