I was driving in forward then reverse to make a path in the snow when I heard a loud "clunk". My tires spun after that. The Jeep drives fine except that it is all over the place with no traction. Obviously, my 4 wheel drive is out. My Jeep is AWD and you would never even notice anything was wrong except in the inclimate Ohio weather we are having right now. I was told by a friend that my transfer case needs replaced. Now for my 4.7L it is about $2200 for the trasfer case. Could there be something wrong in the case and I would not have to replace the entire thing? Additionally, is it safe to drive in normal road conditions? Can I take it to the dealer and can they tell without taking the whole thing apart?