I just got my 08 Sahara, and I love everything about it, except for this one high pitched squeak that it makes over bumps. At first, I thought that it was coming from the suspension or the top, but after looking harder (and getting the suspension and top checked out), I think that I have tracked it to the back window. Below is a video I made showing the sound and where it is coming from. If anyone can help me fix it, I would really appreciate it. I love my Jeep, but this squeak makes me want to punch things.
-Also, it is the worst when it is cold... I think it must have something to do with metal contracting.