CTS V8-5.7L VIN P (2004)
Power Door Lock Actuator: Description and Operation
DOOR LOCK ACTUATORS
The CTD system uses the door jamb switches in the door lock assembly as one method to activate the alarm. The door modules monitor the door jamb
switches. If the rear integration module (RIM) receives a class 2 message from a door module that a door is open and the CTD system is armed, the RIM
activates the alarm.