Keyless Entry System Description and Operation: Notes
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2001 GMC Yukon XL, 2001 GMC Yukon, 2001 GMC Sierra, 2001 GMC Cab & Chassis Sierra, and 2001 GMC C3500 HD. 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.
Keyless entry allows you to operate the following components:
- The door locks, including the rear compartment.
- The illuminated entry lamps
- The panic alarm
The Keyless Entry System has the following main components:
- The transmitters
- The remote control door lock receiver (RCDLR)
The RCDLR communicates with the body control module (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 request to the BCM and the BCM performs the appropriate function.