Navigation
OnStar navigation requires the Directions and Connections service plan.
Push 
to receive directions or
have them sent to the vehicle
navigation screen. Destinations can
also be forwarded to the vehicle
from Google Maps™ or
MapQuest.com. The OnStar
mapping database is continuously
updated. Visit www.onstar.com for
coverage maps.
See also:
Satellite Radio Antenna
For vehicles with XM satellite radio
service, the antenna is located on
the roof of the vehicle. Keep the
antenna clear of obstructions for
clear radio reception. ...
When the Change Engine Oil Soon Message Displays
Change engine oil and filter. See Engine Oil . An Emission Control Service.
When the CHANGE ENGINE OIL SOON message displays, service is required for the vehicle as soon as possible, within the next ...
Horn
Press near the horn symbols or press on the steering wheel pad to sound the horn. ...