I did have to use some finesse to make it work. The simple solution was unsuccessful. I did the position 1 to position 0 about ten times then held the unlock button, followed by pressing the lock button 3 times SLOWLY. After that the truck locked and unlocked itself.

It did give me somewhat of a scare at first though. The first try disabled my only working key. I was able to reprogram both of them though. Good luck