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:
Tire Pressure Monitor
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The TPMS warning light alerts you
to a significant loss in pressure of
one of the vehicle's tires. If the
warning light comes on ...
Compass Messages
CAL
This message is displayed when the
compass needs to be calibrated.
See Compass.
– – –
Three dashes will be displayed if the
compass needs service. See your
dealer for service. ...
Three-Way Calling
Three-way calling must be supported on the Bluetooth phone and enabled by the wireless service carrier.
1. While on a call, press
.
The system responds with “Ready,” followed by a tone.
2. Say ...