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:
Engine Overheating
The vehicle has several indicators
to warn of engine overheating.
There are two engine hot messages
that may be displayed in the Driver
Information Center (DIC). See
Engine Cooling System Mes ...
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 ...
Customer Assistance Offices (U.S. and Canada)
Cadillac encourages customers to call the toll-free number for assistance.
However, if a customer wishes to write or e-mail Cadillac, the letter should be
addressed to:
United States
Cadillac ...