TTY Users
OnStar has the ability to communicate to the deaf, hard–of–hearing, or speech–impaired customers while in the vehicle.
The available dealer–installed TTY system can provide in-vehicle access to all of the OnStar services, except Virtual Advisor and OnStar Turn–by–Turn Navigation.
See also:
Compact Spare Tire
WARNING
Driving with more than one compact spare tire at a time could result in loss of
braking and handling. This could lead to a crash and you or others could be
injured. Use only one compact sp ...
Feature Settings Menu Items
The following are customization features that allow you to program settings to
the vehicle:
DISPLAY IN ENGLISH
This feature will only display if a language other than English has been set.
This ...
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. ...