Volume Control
VOL/
(Volume/Power): Turn to
adjust the volume.
(Phone/Mute): For vehicles with
OnStar®, press and hold
to mute
the infotainment system. Press and
hold
again, or turn the VOL/
knob to cancel mute.
For vehicles without OnStar®, press
to mute the infotainment system.
Press
again, or turn the VOL/
knob to cancel mute.
See also:
Pulling A Trailer
Here are some important points:
• There are many different laws, including speed limit
restrictions, having to do with trailering. Make sure
the rig will be legal, not only where you live but
...
Customer Assistance for Text
Telephone (TTY) Users
To assist customers who are deaf, hard of hearing, or
speech-impaired and who use Text Telephones (TTYs),
Buick has TTY equipment available at its Customer
Assistance Center. Any TTY user can co ...
Head Restraint Adjustment
Do not drive until the head restraints for all occupants are installed and adjusted
properly.
To achieve a comfortable seating position, change the seatback recline angle
as little as necessary w ...
