See also:

Using the Call Command
1. Press and hold for two seconds. The system responds with “Ready” followed by a tone. 2. Say “Call”. The system responds with “Call using <phone name>. Please say the name ta ...

Outside Automatic Dimming Mirror
If the vehicle has this feature, the driver side mirror adjusts for the glare of headlamps behind you. This feature is controlled by the on and off settings on the automatic dimming rearview mir ...

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 acce ...