i got my yj winterized (i checked the antifreeze )so it snowed lots today and well we went playin and mid way through the trail my tcase started makin lots of noise and causing the jeep to shake and i dont want to drive it in 4x4 i think its my tcase(i got a spare) im pretty shure thats what it is .....it still drives good in 2wheel no problems......dont have any noise from the front diff when im driving.......pls help....dont want to do the wrong thing.......