Horn
Press 
on the steering wheel pad to sound the horn.
See also:
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. ...
Continuous Damping Control (CDC)
This vehicle may have a continuous damping control system called Autoride® or
MagneRide™. With this feature, improved vehicle ride and handling is provided under
a variety of passenger and loading ...
Head Restraints
WARNING
With head restraints that are not installed and adjusted properly, there is a
greater chance that occupants will suffer a neck/spinal injury in a crash.
Do not drive until the head restrai ...