Is the rear HVAC or Radio control panel backlit? The one in the back of the center console on the floor of 2003-2006 tahoe, suburban, silverado, and avalanche. I took mine apart, it has bulbs, they are not burnt out (i confirmed by measuring continuity across the bulbs). But they do not light up. However the bulb bases look slightly melted as if they did work in the past. Can anyone confirm that their backlighting is working? Maybe post a picture? It would be greatly appreciated. New to the forum btw, joined because I can't find information on this anywhere.