TTY Users
OnStar has the ability to communicate to the deaf, hard-of-hearing, or speech-impaired customers while in the vehicle. The available dealer-installed TTY system can provide in-vehicle access to all of the OnStar services, except Virtual Advisor and OnStar Turn-by-Turn Navigation.
See also:
Horn
Press near or on the horn symbols on the steering
wheel pad to sound the horn. ...
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle or
some action that may be needed to
correct a condition. Multiple
messages may display one after the
other.
The messages th ...
Power Door Locks
(Unlock): Press to unlock the doors.
(Lock): Press to lock the doors.
See “Power Door Locks” in Vehicle Personalization . ...