See also:

Comfort and Convenience
Select the Comfort and Convenience menu and Chime Volume will be displayed. Chime Volume This allows the selection of the chime volume level. Press the TUNE/MENU knob when Chime Volume is highlight ...

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. Press and request a vehicle ...

FCC Information
See Radio Frequency Statement for information regarding Part 15 of the Federal Communications Commission (FCC) rules and Industry Canada Standards RSS-GEN/210/220/310. ...