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 SystemFuel Tank Filler Door Replacement (Terrain) Doors
Fuel Tank Filler Door ReplacementCalloutComponent Name1Fuel Tank Filler DoorProcedurePosition the fuel tank filler door to the full open position.Using light outward sliding pressure on the filler door, releasethe retainer on the fuel tank filler door from the hinge. ...