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 acce ...

Retained Accessory Power (RAP)
Your vehicle has a Retained Accessory Power (RAP) feature which lets certain features of your vehicle to continue to work up to 20 minutes after the ignition key is turned to LOCK. The radio, po ...

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