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:
OnStar Additional Information
Transferring Service
Push to request account transfer
eligibility information. The Advisor can assist in canceling or removing account
information. If OnStar receives information that vehicle ow ...
RELEASE PARK BRAKE SWITCH
For vehicles with the electric parking
brake, this message displays if the
switch is pulled while the vehicle is
moving. See the electric parking
brake information under Parking
Brake (Elect ...
Reading Lamps
For vehicles with front reading lamps in the overhead console, press the button
located next to the lamp to turn it on or off.
The vehicle may also have reading lamps in other locations. The lamps ...