Horn
Press 
on the steering wheel
pad to sound the horn.
See also:
Automatic Door Lock
The doors are programmed to automatically lock when the shift lever is moved
out of P (Park).
The automatic door lock feature cannot be disabled. ...
Tilt Wheel
The steering wheel should be adjusted before you
drive.
The tilt lever is located
to the left of the steering
column, under the
turn signal lever.
It can be raised to the highest level to give ...
OnStar®
If the vehicle has OnStar and you subscribe to the
OnStar services, please refer to the OnStar Terms and
Conditions for information on data collection and use. ...