Horn
Press 
on the steering wheel pad
to sound the horn.
See also:
Cleaning the Center Stack
Cleaning the Display
Notice: Using abrasive cleaners when cleaning glass surfaces could scratch the
glass. Use only a soft cloth and do not spray cleaner directly on the system as
it could affect ...
Automatic Dimming Rearview Mirrorwith Compass
Your vehicle may have an automatic-dimming
rearview mirror with a compass.
(On/Off): This is the
on/off button for the
automatic dimming feature and compass. ...
Comfortable, quiet ride
In addition to delivering surprising performance, Rainier's refined
powertrains and precision-engineered chassis system contribute to a comfortable,
quiet ride - a Buick distinction throughout its ...