My gear selector on my 01 Mazda tribute won't respond at all. I came home one day, parked it in the driveway, and went out the next morning and the car would start but not shift out of park into any other gear. The gear selector would move down to another gear, but never engage. It was very loose and I don't have a clue what it could be. I thought maybe a loose cable or something inside the steering column but have not ben able to come up with anything. Any advice?