RE: How to disable automatic door locking?
To shut off autolock;
enter the truck and close all doors
Fasten driver seat belt
place key in ignition
within 10 seconds, cycle the key from off to on four times ending in the on position, do not start engine.
withing 30 seconds, press the driver's door lock switch in the lock direction.
a single chime will be heard (if you buckled the seat belt) and it means its disabled.
To turn it back on, do the same procedure.
If a chime is not heard, it means the program mode was cancelled because you took too long.
If multiple chimes are heard it meand you didn't buckle the driver seat belt.