Adaptive front lighting system (Amber)

Illuminates when there is a system fault. The headlamps will still operate, but without this feature operating correctly. Seek qualified assistance as soon as possible. ...

Adaptive cruise control (amber)

Illuminates when adaptive cruise control is active, to indicate that the vehicle is in follow mode. ...

See also:

OnStar®
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview  ...

Brake (amber)
USA.   Canada.   Illuminates briefly as a bulb check when the ignition is switched on. If the lamp illuminates after starting the engine or while driving, suspect worn brake pads ...

Push-button ignition switch positions
LOCK (Normal parking position) The ignition switch can only be locked in this position. The ignition switch will be unlocked when it is pushed to the ACC position while carrying the Intellige ...