Horn
Press 
on the steering wheel pad to sound the horn.
See also:
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 ...
OnStar Overview
If equipped, this vehicle has a comprehensive, in-vehicle system that can
connect to a live Advisor for Emergency, Security, Navigation, Connection, and
Diagnostic Services.
The OnStar system ...
High Intensity Discharge
(HID) Lighting
WARNING!
The low beam high intensity
discharge lighting system
operates at a very high voltage.
If you try to service any of the
system components, you could be
seriously injured. Have your ...