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:
Weight of the Trailer
How heavy can a trailer safely be?
It should never weigh more than
450 kg (1,000 lbs). But even that
can be too heavy.
Speed, altitude, road grades,
outside temperature, special
equipment, ...
Automatic EPB Release
The EPB will automatically release if
the vehicle is running, placed into
gear, and an attempt is made to
drive away. Avoid rapid acceleration
when the EPB is applied, to
preserve park brake ...
Warranty
OnStar equipment may be
warranted as part of the new-vehicle
limited warranty. The manufacturer
of the vehicle furnishes detailed
warranty information. ...