Your Responsibility
Increase the volume of the radio if the OnStar Advisor cannot be heard.
If the light next to the OnStar buttons is red, the system may not be functioning properly. Push 
and request a vehicle diagnostic check. If the light appears clear (no light appears), your OnStar subscription has expired and all services have been deactivated.
Push to confirm that the OnStar equipment is active.
See also:
Languages
The vehicle supports English,
French (Canadian), and Spanish.
The default language is English.
To change the display language,
see Vehicle Personalization for more information. ...
Radio Data System (RDS)
The audio system has a Radio Data System (RDS).
RDS features are available for use only on FM
stations that broadcast RDS information.
With RDS, the radio can do the following:
• Seek to s ...
Erasing Speed Memory
The cruise control set speed memory is erased by
turning off the cruise control or the ignition. ...