Special Application Services
. Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000 mi.
- Have underbody flushing service performed once a year.
See also:
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 v ...
Wiper Blades
Wiper blades need to be cleaned
and kept in good condition to
provide a clear view.
- Signs of wear include streaking,
skipping across the windshield,
and worn or split rubber.
- Trained dea ...
Dual Mode
This dual screen symbol displays when the screen is in dual mode.
Dual mode displays the route on half of the screen and a maneuver or Interstate
Exit list on the other half. The Interstate Exit ...






