Automatic Dimming Rearview Mirror with OnStar® and Compass
Your vehicle may have an automatic-dimming rearview mirror with a compass and the OnStar® system.
There are three additional buttons for the OnStar® system. See your dealer for more information on the system and how to subscribe to OnStar®.
See OnStar® System on page 129 for more information about the services OnStar® provides.
(On/Off): This is the
on/off button.
See also:
Automatic Transmission Fluid
How to Check Automatic Transmission Fluid
It is not necessary to check the transmission fluid level.
A transmission fluid leak is the only reason for fluid loss. If a leak occurs, take the vehicle t ...
Roadside Assistance Program
U.S.: 1-800-252-1112
TTY Users (U.S.): 1-888-889-2438
Canada: 1-800-268-6800
Mexico: 01-800-466-0818
As the owner of a new Buick, you
are automatically enrolled in the
Roadside Assistance prog ...
Adjusting the Volume
Turn the VOL/ knob to adjust the
volume of the infotainment system
after the volume level has been set
on the portable audio device. ...