Doors unlock.

I have a 1999 chevy silverado Z71, my doors lock at 15 mph. When I stop and put it in park, shoud it unlock and if so can you tell me how to emable it?

The doors will NOT unlock automatically. However, my method of fixing the problem was to have the dealership remove the auto lock feature. They charged me ten bucks and now my truck doesnt lock the doors at 15 mph.