GMC 2010 Acadia Owner's Manual page 30

1-24 In Brief
The vehicle must have a working
electrical system, including
adequate battery power, for the
OnStar equipment to operate. There
are other problems OnStar cannot
control that may prevent OnStar
from providing OnStar service at
any particular time or place. Some
examples are damage to important
parts of the vehicle in a crash, hills,
tall buildings, tunnels, weather or
wireless phone network congestion.
OnStar Steering Wheel
Controls
This vehicle may have a Talk/Mute
button that can be used to interact
with OnStar hands-free calling.
See Steering Wheel Controls on
page 5 2 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.
Your Responsibility
Increase the volume of the radio if
the OnStar advisor cannot be heard.
If the light next to the OnStar
buttons is red, the system may
not be functioning properly.
Q
Press and request a vehicle
diagnostic. If the light appears clear
(no light is appearing), your OnStar
subscription has expired and all
services have been deactivated.
Q
Press to confirm that the OnStar
equipment is active.