Keyless Entry System Description and Operation: Notes
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. 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. Radio frequencies or discharged batteries may disable the system.
Keyless entry allows you to operate the following components:
- The door locks
- The rear compartment lid release
- The illuminated entry lamps
- The panic alarm/instant alarm
The keyless entry system has the following main components:
- The transmitters
- The endgate module (EGM) (XUV only)
- The liftgate module (LGM) (Except XUV)
When you press a button on a transmitter, the transmitter sends a signal to the liftgate module. The module interprets the signal and activates the requested function via a class 2 message over the serial data line.