Onstar.com
The website provides access to account information, manages the OnStar subscription, and allows viewing of videos of each service.
Get subscription plan pricing and sign up for OnStar Vehicle Diagnostics. Click on the “My Account” tab on the home page.
See also:
Fuel
Use of the recommended fuel is an important part of the proper maintenance
of this vehicle. To help keep the engine clean and maintain optimum vehicle
performance, we recommend the use of gasoline a ...
Fuels in Foreign Countries
Never use leaded gasoline or any other fuel not recommended in the previous
text on fuel. Costly repairs caused by use of improper fuel would not be
covered by the vehicle warranty.
To check the ...
Drive Systems
All-Wheel Drive
Vehicles with this feature always
send engine power to all four
wheels. It is fully automatic, and
adjusts itself as needed for road
conditions.
When using a compact spare ti ...