Yup I know exactly what is wrong. On the 2001's the window frame rail was held together with a silcone based adhesive. I started getting a screeching and a poping noise every now and then. So I took mine apart, and found the it came off the track and the adhesive let go, so the window was crooked when the motor was trying to push it up and pull it down. I have a fix on my webiste if your someone mechanically inclined. www.svr-racing.com/windowrepair.html
And I also see that our in Kansas, that is where our shop is located. Let me know if you need more information, the link will give you everything you need to know.