Hey guys I have a 2002 2500hd I’m hoping someone can help. Christmas Eve I slowly bumped a snow pile and my power steering pulley came off and truck wouldn’t shift. Two days later I installed new pump and pulley started truck and all was normal. Few weeks later went to start it and again only reverse. I replaced nsbu twice now, speed sensor on torque converter, pulled pan replaced both filters was no chunks of metal or anything major. Found under fuse box mice chewed wires I now have truck at a shop they re wires all bad wires and now has no codes but still no forward gears. Trucks stock. I pulled plug from side of trans and had fluid in it I cleaned and put back no difference. It looks like there was a leak on a trans line and they used a clamp and piece of hose to stop leak would that cause this? I’m already over a grand in parts and labor for a truck I just bought and now shop says they can’t do anything more