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:
Warranty
OnStar equipment may be
warranted as part of the new-vehicle
limited warranty. The manufacturer
of the vehicle furnishes detailed
warranty information. ...
Parking Brake
The vehicle has an Electric Parking Brake (EPB). The switch for the EPB is
in the center console.
The EPB can always be activated, even if the ignition is off. To avoid
draining the battery, ...
Rear Compartment Fuse
Block (CTS Wagon)
This fuse block is on the right side
of the vehicle, behind the trim panel
in the rear compartment.
The vehicle may not be equipped
with all of the fuses, relays, and
features shown.
...