Horn
Press 
on the steering wheel pad
to sound the horn.
See also:
OnStar® Steering Wheel Controls
Your vehicle may have a Talk/Mute button that
can be used to interact with OnStar® Hands-Free
Calling.
On some vehicles, you may have to hold the
button for a few seconds and give the command
†...
Blizzard Conditions
Being stuck in snow can be a serious situation. Stay with the vehicle unless
there is help nearby.
If possible, use the Roadside Assistance Program . To get help and keep everyone
in the vehicle ...
Courtesy Lamps
The courtesy lamps come on automatically when any door is opened and the dome
lamp is in the door position. ...