See also:

Adjusting the Treble, Midrange, and Bass
1. Press the TONE button. 2. Select Treble, Midrange, or Bass. 3. Select the value. Press the BACK button to go back to the Tone Settings menu. ...

Air Quality Sensor
This will allow you to select whether the system will operate at high or low sensitivity. Only vehicles with the dual zone climate control will have this option. Press SELECT when Air Quality ...

Warranty
OnStar equipment may be warranted as part of the new-vehicle limited warranty. The manufacturer of the vehicle furnishes detailed warranty information. ...