2012 Chevrolet Tahoe Owner's Manual - Page 51

Keys, Doors, and Windows The power assist steps automatically extend from beneath the vehicle on the side in which the door has been opened. Once the door is closed, the assist steps automatically move back under the vehicle after a brief delay. The vehicle must not be moving for the assist steps to extend or retract. The assist steps cannot be disabled in the extended position. 2-15 Vehicle Security This vehicle has theft-deterrent features; however, they do not make it impossible to steal. To arm the theft-deterrent system: 1. Open the door. 2. Lock the door with the Remote Keyless Entry (RKE) transmitter or the power door lock switch. The security light will come on to inform the driver the system is arming. If a door is open when the doors are locked, the security light will flash. If the delayed locking feature is turned on, the theft‐deterrent system will not start the arming process until the last door is closed and the delay timer has expired. See Delayed Locking on page 2‑9. 3. Close all doors. The security light should go off after about 30 seconds. The alarm is not armed until the security light goes off. Anti-theft Alarm System Your vehicle has a content theft-deterrent alarm system. This is the security light.