Horn
Press 
on the steering wheel pad
to sound the horn.
See also:
How the System Works
URPA comes on automatically when
the shift lever is moved into
R (Reverse). A single tone sounds
to indicate the system is working.
URPA operates only at speeds less
than 8 km/h (5 mph).
An ...
Bluetooth (Infotainment Controls)
For vehicles equipped with the
MyLink or IntelliLink infotainment
system, see the separate MyLink/IntelliLink Features and Functions
Guide for more information.
For information about how to
n ...
Reporting Safety Defects to General
Motors
In addition to notifying NHTSA (or Transport Canada) in
a situation like this, please notify General Motors.
Call 1-800-521-7300, or write:
Buick Customer Assistance Center
P.O. Box 33136
Detroi ...