[k5hart]

I still have the old original looking GM key that opens every lock on the truck. I never had a second key for anything. Both of my previous truck have been the same way. Maybe the original owner rekeyed everything, but I would be surprised. As for the hatch handle, believe me no other key will open it. I have tried. Cheyenne 10 may be right in saying maybe GM did it a couple of different ways. They have been known to do that on occassion.