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:
Comfort and Convenience
Select the Comfort and
Convenience menu and the
following will be displayed:
• Chime Volume
• Driver Seat Easy Exit
• Park Tilt Mirrors ...
Engine Oil Additives/Engine Oil Flushes
Do not add anything to the oil. The recommended oils with the dexos specification
and displaying the dexos certification mark are all that is needed for good performance
and engine protection.
En ...
Towing
General Towing Information
The vehicle is neither designed nor intended to tow a trailer. ...