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:
Services for People with
Disabilities
Advisors provide services to help
subscribers with physical disabilities
and medical conditions.
Push for help with:
- Locating a gas station with an
attendant to pump gas.
- Finding a hotel ...
California Fuel Requirements
If the vehicle is certified to meet California Emissions Standards, it is designed
to operate on fuels that meet California specifications. See the underhood emission
control label. If this fuel i ...
Overheated Engine Protection Operating Mode
If an overheated engine condition exists and the ENGINE POWER IS REDUCED message
is displayed, an overheat protection mode which alternates firing groups of cylinders
helps prevent engine damage. ...