mine is whining, but it is in all gears except 4th, and it makes a loud grumbling sound when the engine is idling and the clutch is out. I know it is the bearings, but the problem is that I cant seem to find a 4wd transmission in the junkyards down in southern california, and the transmission in it isnt a good one to rebuild, as there was chunks and flakes of metal coming out of the oil when I changed it last. I even found a piece of a washer (most likely off of one of the gearsets) on the magnet of the drain plug.