Door locks not locking

Hi and thanks for using 2CarPros.

I just read through several pages in the manual. Nothing indicates this year vehicle has the automatic locking doors. Here is what it says the system is designed to do:

The following locking functions are included on the vehicle:
All the doors unlock All the doors will unlock, including the End-gate/Lift-gate, when any power door unlock switch is detected. The passenger doors lock directly by pressing the lock switches. The driver door unlocks by the BCM using a driver door unlock relay.
All the doors lock - All the doors will lock, including the End-gate/Lift-gate, when any power door lock switch is activated. All the lock actuators will activate directly from the power door lock switch (external to the BCM).
The end/lift gate lock switch - All the doors will lock or unlock from the end/lift gate lock switch.
The lockout prevention - This function will unlock the drivers door automatically if the keys have been left in the ignition and the power door lock switch is operated.

Let me know your thoughts.

Joe