See also:

Automatic Dimming Rearview Mirror
On vehicles with an automatic dimming inside rearview mirror the automatic dimming reduces the glare from the headlamps of the vehicle behind you. Vehicles with OnStar have three control bu ...

Hazard Warning Flashers
(Hazard Warning Flasher): Press and momentarily hold this button located on the instrument panel above the climate control system, to make the front and rear turn signal lamps flash on and off. ...

Roadside Assistance and OnStar
If you have an active OnStar subscription, press the Q button and the current GPS location will be sent to an OnStar Advisor who will assess your problem, contact Roadside Assistance, and relay y ...