See also:

Phone Settings
See Bluetooth (Overview) or Bluetooth (Infotainment Controls) or Bluetooth (Voice Recognition) or Bluetooth (UHP Mexico Only) in the “Phone” section for more information on phone settings. ...

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

Warranty
OnStar equipment may be warranted as part of the new-vehicle limited warranty. The manufacturer of the vehicle furnishes detailed warranty information. ...