91 Chevy Suburban 350 190,000 miles. With custom lift kit. My Buddy was trying to pull me out of the snow, he put it in reverse it sputtered and died. Now there is no power at all (electrical)dash lights, radio gauges, ignition, Etc. We checked battery cables, fuses, everthing fine there. There is power to the starter and solenoid but thats it. Any ideas?