how about a bad ignition switch, if the starter was bad it wouldn't be able of being jumped with a screwdriver, but at the same time theres so many relays and safety switches on these trucks now it could be a needle in a hay stack or something in plain site and easy.
2006 LBZ 3500 4x4 cclb/srw lt3
Sold 2011 lml 2500hd 4x4 lt ecsb taupe gray. 3" mbrp down pipe, 4" flo-pro straight pipe, egr and resonator blocks, and efi live autocal w/o any extra horses
Sold 06 LBZ 3500 4x4 single rear wheel regular cab long bed WT, 4" turbo back straight pipe, solid gooseneck, drw wrecker prep springs, blocked, fingured, 2"plugged, and plenty of UWS boxes