I wonder if i'm starting to get the beginning of this problem. Other day i get out of the truck and i hear a bunch of whirring sounds. Sounded like transfer case motor. Next day the little icon on the dash that says 2WD was missing. Turned it off and on a couple times and it eventually came back on. This has happened a few times now, but no service 4wheel drive light yet. Did anyone notice anythign similar before?