Hello, I have a 97 Pathfinder and all of a sudden the car will not go in Reverse. When I put it in gear it does not do anything. It doesn't even give that little jerk like it's in gear. Has anyone had this problem? Do you think it will need a new or rebuilt tranny? If so any idea on what the cost of something like that should be? The truck has 115,000 miles, it's a 6 cylinder Thanks!