See also:

Horn
Press on the steering wheel pad to sound the horn. ...

Rear Window Wiper/Washer
For vehicles with a rear window wiper/washer, the controls are on the end of the windshield wiper lever. Press the upper or lower portion of the button to control the rear wiper and rear ...

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 ...