Hello i have a 2002 Avalanche Z71 and all my interior light wont work, i cant see gauges at night the ac panel wont have back lighting and the window buttons don't illuminate. only things that work on the lighting now are the doors and the lights above me. Need help ASAP to fix use as my work truck. I have replaced all fuses and i have checked behind the radio i just installed it has nothing to do with it. my dimmer switch is all the way up and I have even took it off automatic lights and put it too manual and nothing works still.