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:
Driver Shift Control (DSC)
Notice:
Driving with the engine at
a high rpm without upshifting
while using Driver Shift Control
(DSC), could damage the vehicle.
Always upshift when necessary
while using DSC.
DSC allows ...
Adding Equipment to the Airbag-Equipped Vehicle
Adding accessories that change the vehicle's frame, bumper system, height, front
end or side sheet metal, may keep the airbag system from working properly. The operation
of the airbag system c ...
XM Categories
XM channels are organized in categories.
Removing or Adding Categories
Channels in a category that have been removed can still be accessed by using
thes© or ¨\buttons, or the TUNE/MENU knob. ...