The automatic door lock (ADL) function provides for locking or unlocking the doors when shifting the transmission in and out of PARK. Customized selections may be made as follows:

1. No automatic door lock or unlock
2. Automatic all door lock when gear selector moves out of PARK. No automatic door unlock
3. Automatic all door lock when gear selector moves out of PARK. Automatic driver door unlock when gear selector moves into PARK
4. Automatic all door lock when gear selector moves out of PARK. Automatic all door unlock when gear selector moves into PARK.

The Left Front Door Module (LFDM) communicates with the Remote Key-Less Entry (RKE) module over the class 2 data link. The RFA module receives powertrain control module (PCM) shift select changes. Whenever the left front door is closed, the ignition is in RUN and the gear selector is shifted out of PARK, the RFA module will transmit a class 2 lock doors message to the Left Front Door Module (LFDM). The LFDM will send this message on to the other door modules over the simple bus interface (SBI) and the modules will lock their doors as programmed. If personalization is selected to do so, the RKE will also unlock the doors when the gear selector lever is put back in to PARK.