Multi-Band Antenna
The antenna located on the roof of the vehicle is used for the OnStar, XM Satellite Radio Service System, and GPS (Global Positioning System), if the vehicle has these features. Keep the antenna clear of obstructions for clear reception.
If the vehicle has a sunroof and it is open, the performance of OnStar, XM, and GPS can be affected.
See also:
Sunroof
If the vehicle has a power sunroof it
will only operate when the ignition is
in ON/RUN or ACC/ACCESSORY,
or when Retained Accessory
Power (RAP) is active. See Ignition
Positions (Key Access) ...
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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 m ...