Horn
Pressaon 
the steering wheel pad
to sound the horn.
See also:
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 sy ...
Radio
Press CONFIG to enter the configure menu options, then press CONFIG again, repeatedly
until Radio is selected or press the Radio screen button to make changes for radio
information displayed, pres ...
Top View
...