My Jeep Liberty occasionally will make a huge BANG when shifting from
4 wheel drive back into 2 wheel drive. The bang is loud enough that it scares the heck out of you. It's been to the dealer 3 times and they can't seem to find the problem. It even happened one time when the service manager was test driving it. Their advise was to put it in reverse. Any one else had this happen or have any ideas what to do?