2008 GMC Envoy Owner's Manual - Page 90

Theft-Deterrent Systems Vehicle theft is big business, especially in some cities. Although your vehicle has a number of theft-deterrent features, we know that nothing we put on it can make it impossible to steal. To operate the system: 1. Open the door. 2. Lock the door with the power door lock switch or the Remote Keyless Entry (RKE) transmitter. The security light should flash. The system will not activate if the doors are locked with the key or manual door lock. 3. Close all doors. The security light should turn off after about 30 seconds. The alarm is not armed until the security light turns off. If a locked door is opened without the key or the RKE transmitter, the alarm will go off. The headlamps and parking lamps will flash for two minutes, and the horn will sound for 30 seconds, then will turn off to save the battery power. To avoid setting off the alarm by accident: Content Theft-Deterrent Your vehicle may have a content theft-deterrent alarm system. The security light is located on the instrument panel cluster. • Always lock the vehicle using the door key after the doors are closed. • Always unlock a door with a key, or use the RKE transmitter. Unlocking a door any other way will set off the alarm. To turn off the alarm, press unlock on the RKE transmitter or unlock any door with the key. 2-16