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:
Ending a Call
Press to end a call. ...
Engine Coolant Heater
The engine coolant heater, if available, can help in cold weather conditions
at or below −18°C (0°F) for easier starting and better fuel economy during engine
warm-up. Plug in the coolant ...
Memory Features
On vehicles with the memory feature, the “1” and “2” buttons on the outboard
side of the driver seat are used to manually save and recall the driver seat and
outside mirror positions. Th ...