GM Service Manual Online
For 1990-2009 cars only

Remote Driver Door Unlock

The RCDLR sends a message to the BCM, through CKT 377, in order to unlock the driver's door upon pressing the UNLOCK button on the keyless entry transmitter 1 time.

Remote all Door Unlock

The RCDLR sends a message to the BCM, through CKT 377, in order to unlock all of the doors upon pressing the UNLOCK button on the keyless entry transmitter 2 times (allowing no more than 5 seconds to elapse between presses).

Remote all Door Lock

The RCDLR send a message to the BCM. through CKT 377, in order to lock all of the doors upon pressing the LOCK button on the keyless entry transmitter 1 time. The following features alter the normal remote door locking operation:

    • The lockout prevention feature:
        The BCM will not lock the doors when the lockout prevention feature is active.
    • The last door closed locking feature:
        The BCM delays the door locking when the last door closed locking feature is active.

Refer to Power Door Locks Circuit Description in Doors for more information on the lockout prevention feature and the last closed door locking feature.

Remote Alarm

When the ALARM button on the keyless entry transmitter is pressed, the RCDLR sends a message to the BCM. The message is sent to the BCM through CKT 377 in order to flash the headlamps and sound the horn alternately for 2 minutes. Press the alarm button a second time in order to stop the remote alarm.

Rear Compartment Lid Release

When the REAR COMPARTMENT button on the keyless entry transmitter is pressed, the RCDLR sends a message to the BCM through circuit 377. The BCM energizes the rear compartment lid release relay and applies voltage to CKT 56. The rear compartment lid lock release actuator energizes and releases the rear compartment lid.

If the transmission/ transaxle is shifted out of the PARK position, the rear compartment lid release feature is disabled.

Courtesy Lights Activation

The BCM turns ON the courtesy lamps when unlocking the doors with the keyless entry transmitter. Refer to Diagnostic System Check - Lighting Systems in Lighting Systems.