I have a 2004 Chevy Suburban and for some reason the rear passenger electric door lock stopped working. I can opperate it manualy but it wont work using any switch. This went out when the Suburban was about two years old, and I now have some time to work on it. Can you tell me how to remove the door pannel? And if I need any special tools to do this? Maybe if I can see it I can see why it stopped working? Any tips? Bob