System Controls

The power door lock system is controlled by the Body Control Module (BCM) and can be activated by any one of the following:
^ A door lock switch Lock or Unlock actuation
^ A door lock cylinder switch Unlock actuation
^ A keyless entry transmitter actuation
^ An OnStar Unlock actuation using the Vehicle Interface Unit (VIU)
^ An automatic door lock actuation (Personalization function)
^ An automatic door unlock actuation (Personalization function)
^ A Last Door Closed Locking (LDCL) actuation (Personalization function)