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. Push 
and request a vehicle diagnostic check. If the light appears clear (no light appears), your OnStar subscription has expired and all services have been deactivated.
Push to confirm that the OnStar equipment is active.
See also:
Rear Compartment Fuse Block
The rear compartment fuse block, if equipped, is located on the left side of
the trunk behind a cover.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
...
Pairing
A Bluetooth enabled mobile phone
must be paired to the UHP system
first and then connected to the
vehicle before it can be used. See
the mobile phone manufacturer's
user guide for Bluetooth ...
Rear Window Sunshade
On vehicles with a rear window
sunshade, the switch is on the
console to the right of the shift lever.
The sunshade only operates when
the ignition is in ON/RUN or ACC/ACCESSORY.
To open the s ...