i was pulling my chevelle back from the paint shop today and all of a sudden engine had no power whatso ever adn shut off. I pulled over tried to restart and it would just crank. I checked the fuses and EDU 25A fuse was blown, i replaced it and the fuse blew as soon as i cranked again and now the truck still won't start. Whats te deal? its an 04' 2500HD with 48,000 miles.

Check you wiring where it is zip tied by the alternator. Something probably wore through and shorted out.