Horn
Pressaon 
the steering wheel pad
to sound the horn.
See also:
Exterior Lamp Controls
The exterior lamps control is located on the instrument panel to the left of
the steering wheel.
It controls the following systems:
Headlamps
Taillamps
Parking Lamps
License Plate Lamps ...
TTY Users
OnStar has the ability to
communicate to the deaf,
hard–of–hearing, or speech–impaired
customers while in the vehicle.
The available dealer–installed TTY
system can provide in-vehicle
acces ...
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 ...