Muting a Call
During a call, all sounds from inside the vehicle can be muted so that the person on the other end of the call cannot hear them.
To mute a call, press 
and
then say “Mute Call.”
To cancel mute, press and
then say “Un-mute Call.”
See also:
What to Use
WARNING!
Adding only plain water or some
other liquid to the cooling system
can be dangerous. Plain water
and other liquids, can boil before
the proper coolant mixture will.
The coolant warn ...
Cooling System
The cooling system allows the
engine to maintain the correct
working temperature.
When it is safe to lift the hood:
A. Electric Engine Cooling Fan(s)
(Out of View)
B. Coolant Surge Tank and ...
Connections
OnStar Hands-Free Calling allows calls to be made and received from the
vehicle. The vehicle can also be controlled from a cell phone through the
OnStar mobile app. See www.onstar.com for coverage m ...