See also:

How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free ...

Reading Lamps
There are reading lamps located on the overhead console and over the rear passenger doors. These lamps come on automatically when any door is opened. To manually turn the reading lamps on or off: ...

Adaptive Forward Lighting (AFL) Light
This light should come on briefly as the vehicle is started. If it does not come on, have the vehicle serviced by your dealer. This light comes on solid when there is a problem with the Adapti ...