Emergency
With Automatic Crash Response, the built-in system can automatically connect to help in a crash even if you cannot ask for it.
Push 
to connect to an Emergency Advisor.
GPS technology is used to identify the vehicle location and can provide critical
information to emergency personnel. The Advisor is also trained to offer critical
assistance in emergency situations.
See also:
Storing and Deleting Phone Numbers
The system can store up to 30 phone numbers as name tags in the Hands-Free Directory that is shared between the Bluetooth and OnStar systems, if equipped.
The following commands are used to delete an ...
Airbag System Messages
SERVICE AIR BAG
This message displays if there is a problem with the airbag system.
Have your dealer inspect the system for problems. See Airbag Readiness Light on page 5‑16 and Airbag System ...
Grade Braking (6-Speed Automatic Transmission)
The Grade Braking shift modes can be activated by pressing the button on the end of the shift control lever.
While in Range Selection Mode, Grade Braking is deactivated allowing the driver to select ...