Keyless Entry System Description and Operation: Notes

WARNING: This page is about a different car, the 2003 Pontiac Montana, 2003 Oldsmobile Silhouette, and 2003 Chevrolet Venture. However, it is still accessible from the selected car via links, so may be relevant.

The keyless entry system is a supplementary vehicle entry device. Use the keyless entry system in conjunction with a door lock key. Radio frequencies or discharged batteries may disable the system. Therefore, always carry a door lock key.

Keyless entry allows you to operate the following components:

The door locks
The power sliding doors (if equipped)
The illuminated entry lamps
The panic alarm (instant alarm) (if equipped with content theft deterrent)

The keyless entry system has the following main components:

The transmitters
The remote control door lock receiver (RCDLR)
The body control module (BCM)

The RCDLR communicates with the BCM through the keyless entry serial data circuit. When you press a button on a transmitter, the transmitter sends a signal to the RCDLR. The RCDLR sends a lock or unlock request to the BCM depending on which button is pressed on the transmitter. On vehicles equipped with content theft deterrent (CTD) and power sliding doors, the RCDLR may also send a panic alarm request or a power sliding door open request to the BCM. The BCM receives the message from the RCDLR and performs the appropriate function.