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:
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 ...
What to Use
To determine what kind of fluid to use, see Recommended Fluids and Lubricants . Always use the proper fluid.
Notice: Use of the incorrect fluid may damage the vehicle and the damages may
not ...
Audio System
When using the Bluetooth system, sound comes through the vehicle's front
audio system speakers and overrides the audio system.
Use the VOL/ knob during a call to change the volume
level.
The a ...