See also:

Horn
To sound the horn, press the center pad on the steering wheel. ...

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 Callin ...

Jump Starting
For more information about the vehicle battery, see Battery on page 10‑25. If the vehicle's battery has run down, you may want to use another vehicle and some jumper cables to start your vehicl ...