The bottom part of my rear window trim is not held down by anything. I think what held it in place rusted away or something. How do I fix that?
There are lots of threads on this topic with pictures. It ususally involves welding in a replacement window channel. If one is not reproduced for your particular year and model, you will need to obtain one from a donor parts car. Unless you are skilled, I would get a pro to do this. Leaks and further rust issues may ensue if this is not addressed asap.