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:
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will
check the engine, transmission, antilock brakes, and major vehicle systems.
It also checks the tire pressures, if the v ...
Removing the Flat Tire and Installing the Spare Tire
Take off the wheel cover or center cap, if the vehicle has one, to reach the
wheel bolts.
1. Do a safety check before proceeding. See If a Tire Goes Flat for more
information.
2. Turn the wheel ...
Bulb Replacement
For the proper type of replacement
bulbs, see Replacement Bulbs.
For any bulb–changing procedure
not listed in this section, contact
your dealer. ...