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 ...

Flash-to-Pass
This feature allows the high-beam headlamps to be used to signal the driver in front of you that you want to pass. Pull and hold the turn signal/lane change lever toward you to use this fea ...

Wiper Blade Replacement
Windshield wiper blades should be inspected for wear or cracking. See Maintenance Schedule for more information. It is a good idea to clean or replace the wiper blade assembly on a regular basi ...