Keyless Entry System Description and Operation: Notes

WARNING: This page is about a different car, the 2010 GMC Terrain and 2010 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.

The keyless entry system is a vehicle entry device. The keyless entry system is used in conjunction with the remote control door lock receiver and the body control module (BCM) to remotely activate certain vehicle features. Keyless entry will lock/unlock the doors/liftgate when a corresponding button on the keyless entry transmitter is pressed. This is accomplished by the transmitter sending a radio frequency to the remote control door lock receiver. The remote control door lock receiver passes this signal to the BCM via serial data. The BCM interprets the signal and performs the requested function. A low transmitter or vehicle battery or radio frequency interference from aftermarket devices, such as 2-way radios, power inverters, computers, etc., may cause a system malfunction. High radio frequency traffic areas may also cause interference that could lead to a malfunction. Keyless entry allows you to operate the following components:

Door locks
Liftgate lock
Power liftgate, if equipped
Remote vehicle starting
Illuminated entry lamps
Vehicle locator/Panic alarm

The keyless entry system has the following components:

Keyless entry transmitters
Remote control door lock receiver
BCM