Horn
Press 
on the steering wheel pad to sound the horn.
See also:
Exit Lighting
The headlamps, taillamps, parking lamps, back—up lamps, and license plate
lamps come on at night, or in areas with limited lighting, when a door is
opened after the ignition is turned off. The dome ...
Removing and Replacing the
Floor Mats
1. Pull up on the rear of the floor
mat to unlock the retainer and
remove.
2. Reinstall by lining up the floor
mat retainer opening over the
carpet retainer and snap into
position.
3. Ma ...
Cellular and GPS Antennas
Avoid placing items over or near
the antenna to prevent blocking
cellular and GPS signal reception.
Cellular reception is required for
OnStar to send remote signals to
the vehicle. ...