Hey guys, got a 2007 Sierra. The driver side window was left down and got rained on pretty hard. The only window affected is the driver side. It's just stuck about an inch from the top. The dealership wants a ton of money to fix this and there's no way. I've got a new aftermarket motor, but haven't had a chance to do any troubleshooting. Just getting the darn door panel off seems like an act of congress. Any suggestions?