I have a 2004Envoy XUV and the lower door latch stopped working. I had the whole back working and in a fit of stupidedidy I open the roof. It went all way in and out no sweat. Then the window wouldn't go up? I reset the window and it came on line. Went to ope door and bottom won't release. Was working fine till roof? Are they on same relay or what? Now roof don't work either! Window& wiper& top latch? Bottom don't! Help! I've been fixing this a while. Getting to end maybe?