Add-on Electrical Equipment
The OnStar system is integrated into the electrical architecture of the vehicle. Do not add any electrical equipment. See Add-On Electrical Equipment. Added electrical equipment may interfere with the operation of the OnStar system and cause it to not operate.
See also:
Using the Dial Command
1. Press and hold for two
seconds. The system
responds with “Ready” followed by a tone.
2. Say “Dial”. The system responds with “Dial using
<phone name>”. “Number please” ...
Horn
Press near the horn symbols or press on the steering wheel pad to sound the horn. ...
Roadside Assistance Program (U.S. and Canada)
For U.S.-purchased vehicles, call
1-800-252-1112; (Text Telephone
(TTY): 1-888-889-2438).
For Canadian-purchased vehicles,
call 1-800-268-6800.
Service is available 24 hours a day,
365 days ...