Drop your glove box out. Do this by opening the glove box (empty before moving on), and there is a nylon strap held in by a screw. Take out the screw and let the glove box fall down. From here you can reach behind your stereo and plug the antenna back into the back of your stereo system. It's a stiff black wire that runs from your antenna on your passenger side behind your glove box and directly into your stereo system.. it's very possible it's unplugged.