Where the spare tire mounts to, there is a hook that latches to the frame when the tire is stowed. If the hook is frozen from rust, the cable will come down but it will just hang there. What you need to do is let the cable down and prop up the tire, push up about an inch on the tire mount and take a prybar and push the hook in. Should come down with no problem...This is a problem on all the gm vehicles with under the vehicle storage. Ran in to it many times. Hope this helps