Just in case anybody else finds themselves on the side of the road with a truck that won't start after an accident / collision I thought I would post this. The manual will give you following: turn the key off, turn the key to crank, turn the key off, turn the key to on. Well that didn't work for me and I wasn't smart enough to check the Diesel supplement manual. In there it would tell me that If I open the front passenger door, on the side of the dash is a little cover over the shut-off. just remove the cover, stick your finger in there and press down on the top of the switch to re-set it.
She should fire right up after that. Of course, make sure to check for fuel leaks.