OnStar Steering Wheel Controls
This vehicle may have a Talk/Mute button that can be used to interact with OnStar hands-free calling. See Audio Steering Wheel Controls for more information.
On some vehicles, the mute button can be used to dial numbers into voice mail systems, or to dial phone extensions. See the OnStar Owner’s Guide for more information.
See also:
Radio Menus (Radio with CD and Touchscreen)
Tone Menu
To access the sound menu, press the TONE button.
Use the sound menu to adjust the following features:
Bass
Middle
Treble
EQ
Fade
Balance
Setting the Tone
To adjust the ba ...
How the System Works
When the vehicle is started, both
outside mirror displays will briefly
come on to indicate that the system
is operating. While driving forward,
the left or right side mirror SBZA
display w ...
Engine 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 hea ...