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 SystemHood Ajar Indicator Description and Operation Panels
Hood Ajar SwitchThe body control module (BCM) applies B+ to the hood ajarsignal circuit and monitors the voltage to determine the positionof the hood. When the hood is closed, the switch is open andvoltage remains high. When the hood is open, the switch is closedand the voltage is pulled low.The BCM ...