Horn
Pressaon 
the steering wheel pad
to sound the horn.
See also:
Other Navigation Services
Available from OnStar
OnStar eNav: Allows subscribers
to send destinations from Google
Maps and MapQuest.com to their
Turn-by-Turn Navigation or
screen-based navigation system.
When ready, the directions will be
...
Horn
Press on the steering wheel pad to sound the horn. ...
D-Ring Sliders
For vehicles with a D-ring system, there are four D-ring sliders that move
along rails. These can be used as tie-downs when storing cargo.
Insert the D-ring sliders (A) into the channel (B) lo ...