Keyless Entry Transmitters
WARNING: This page is about a different car, the 2009 GMC Envoy and 2009 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
The keyless entry transmitters are used to lock and unlock the vehicle door while away from a distance of up to 9 m (30 feet) away. Up to 4 transmitters may be programmed to a single vehicle.