OnStar®
If equipped, this vehicle has a comprehensive, in-vehicle system that can connect to a live Advisor for Emergency, Security, Navigation, Connection, and Diagnostic Services. See OnStar Overview for more information.
See also:
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.
...
When to Check
Check your tires once a month or more.
Also, check the tire pressure of the spare tire. ...
Without Selective Ride Control
1. Move the shift lever to the left
from D (Drive).
The transmission will enter
Manual Mode. The DIC gear
indicator will change to an M
followed by a number
representing the gear the vehicl ...