I have been scouring the interwebs for an explanation of how to get into the rear door panel to access my window regulator for replacement. When I removed the door I noticed a few rivets preventing me from getting in. In addition, even if I removed the rivets how the hell would I even get it as it seems like a single piece of metal. I’ve done these repairs on my BMW’s and various Japanese cars but have never come across a window I can’t access. Any help would be greatly appreciated. Vehicle is a 2003 9-5 Aero.