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 System#09-06-04-015B: Information on Vehicles Sitting Outside on Dealer Lots for Extended Periods of Time with Hard Start or Crank/No Start Condition - (Nov...
Subject:Information on Vehicles Sitting Outside on Dealer Lots for Extended Periods of Timewith Hard Start or Crank/No Start ConditionModels: 2009-2014 GM Cars and TrucksAttention: The Information in this bulletin applies only to unsold vehicles in dealer inventoryand does not apply to customer-ow ...