So as the title says... Let me start off by saying this is a 2008 Silverado 1500 HD. I noticed when I first bought it the lumination on the door for the switches would go off sometimes when I swung the door open. When I closed it, it would come back on. I dont have a meter but I do have a test light. The fuse is good and there is power going to some of the plugs in the door. I'm at a loss here. I have a feeling it's a wire due to the erratic on off when door is open and closed. Any information will help and thanks in advance guys and girls.