Ok, started having problems with the truck (99 Silvy 4x4 NBS) yesterday. Here the deal
Rear end is acting like a posi or fully locked diff, when turning the inside (to the turn) tire is dragging/sliding/skidding.
There are scrub/scuff marks across the entire width of the tread.
Diff was serviced about 10k ago, no off road use at all since. I think the diff is stuck in the lock position and will likely need to be replaced.
Any assistance w/the diagnostic and solution would be greatly appreciated.