First off I want to wish everyone a happy holiday. I just got back from the store and was lowering my rear window and it quit going down. It won't go up or down with either switch but you can hear the motor humming. It's a 90 model, electric. Any ideas on what to look for if I take the panel off? Also, it won't let me drop the gate while it's up halfway. I guess that's some safety feature. Is there anyway to get around that? I hate to be crawling around in the back and not have the right tool. If possible I need to get this going again, the kids are wanting to go look at Christmas lights and they want to go in the big 4x4 not the Buick.