just got the truck back from the trans shop, had it built, trans has ran awesome for 2000 miles, backed my snowmobile trailer into our garage and went to pull away and back into the garage I pulled forward then put the truck into reverse, and the truck continued forward, I put it into the park position and still went forward, then into neutral position still forward then I went back to park and it locked up. I cant move forward or in reverse. the shift handle doesn't move in any direction. any ideas out there? thanks guys in advance.