I was driving my 2003 Chevy 2500hd today. All of a sudden it shorted itself into neutral. Well I didn't realize it and went to put it into neutral cause the motor was reving and it went into reverse and died. Well it wouldn't start. Won't even turn over or click. All the lights on the dash flash.. So I had it towed. Well when u turn the key to the on position my running lights are on like it's still in gear. The neutral safety switch was fried so we replaced that but it's still doing the same thing. All the fuses look fine. Any other ideas?? Thanks..