Onstar Steering Wheel Controls; Your Responsibility - GMC Sierra 2010 Owner's Manual

OnStar Steering Wheel Controls

This vehicle may have a Talk/Mute button that can
be used to interact with OnStar hands-free calling.
See Audio Steering Wheel Controls on page 4 145 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.
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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. Press
vehicle diagnostic. If the light appears clear (no light is
appearing), your OnStar subscription has expired and
all services have been deactivated. Press
that the OnStar equipment is active.
Q
and request a
Q
to confirm