This vehicle has an anti-theft alarm system.

The indicator light, on the instrument panel near the windshield, indicates the status of the system: Off : Alarm system is disarmed.
On Solid : Vehicle is secured during the delay to arm the system.
Fast Flash : Vehicle is unsecured.
A door, the hood, or the liftgate is open.
Slow Flash : Alarm system is armed.
Vehicle Security
Arming the Alarm SystemRemote Vehicle Speed Limiting Description and Operation Immobilizer
Certain vehicles equipped with OnStar® now have anadditional feature that allows for remote limiting of the vehicle'sspeed. This OnStar® feature is called Stolen VehicleSlow-Down and is now part of the OnStar® Stolen VehicleAssistance service. This feature, when used in conjunction withlocal law ...