Receiving a Call
When an incoming call is received, the audio system mutes and a ring tone is heard in the vehicle.
- Press 
to answer the call.
- Press 
to ignore a call.
See also:
Roadside Service
U.S.: 1-800-224-1400
Canada: 1-800-882-1112
TTY Users (U.S. only): 1-888-889-2438
Mexico: 01-800-466-0805
As the owner of a new Cadillac, you are automatically enrolled in the Roadside
Service p ...
Programming with a Recognized Transmitter (Keyless Access Vehicles Only)
A new transmitter can be programmed to the vehicle when there is one
recognized transmitter.
To program, the vehicle must be off and all of the transmitters, both
currently recognized and new, mu ...
How OnStar Service Works
Automatic Crash Response,
Emergency Services, Crisis Assist,
Stolen Vehicle Assistance, Vehicle
Diagnostics, Remote Door Unlock,
Roadside Assistance, Turn-by-Turn
Navigation, and Hands-Free ...