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:
Tire Messages
SERVICE TIRE MONITOR SYSTEM
On vehicles with the Tire Pressure Monitor System (TPMS), this message displays
if a part on the TPMS is not working properly. The tire pressure light also flashes
and ...
System Settings
CONFIG: Press to adjust the
number of favorites pages, auto
volume, XM (if equipped), and HDD
(if available) settings. The FAV,
AUTO VOL, XM (if equipped), and
HDD (if available) tabs displa ...
Engine Overheating
The vehicle has several indicators to warn of engine overheating.
There is a coolant temperature gauge on your vehicle's instrument panel. See
Engine Coolant Temperature Gauge .
In addit ...