See also:

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 ...

Connecting a USB Storage Device or iPod®
The USB port can be used to control an iPod or a USB storage device. To connect a USB storage device, connect the device to the USB port located in the center console or on the instrument panel. To ...

Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will check the engine, transmission, antilock brakes, and major vehicle systems. It also checks the tire pressures, if the v ...