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#11-00-89-007C: Warranty Administration - Revised Exterior Labor Operations (Labor Only-No Part Replaced) and Required Warranty Claim Submission Information...
Subject:Warranty Administration - Revised Exterior Labor Operations (Labor Only - No PartReplaced) and Required Warranty Claim Submission InformationModels: 2014 and Prior GM Passenger Cars and Light Duty Trucks This bulletin is being revised to add the 2014 model year and update the Labor Opera ...