:tup:
My car ran beautifully in park, once you put it in drive all hell broke loose.
You need to drive it to diagnose it if its not any of the things mentioned here.
Also since when did probes have transfer cases? I dont recall and AWD probes. and if you meant the diff, it would grind all the time.
Try having it run and turn the wheels and see if the noise becomes more prominant anywhere, make sure the wheels or one wheel is spinning, will let you know if its a half shaft, or bearing, it should get worse one way or another, but you usually test that driving not with it jackstands so that test may be worthless.