See also:

Vehicle Data Recording and Privacy
Your GM vehicle has a number of sophisticated computers that record information about the vehicle’s performance and how it is driven. For example, your vehicle uses computer modules to monitor ...

How OnStar Service Works
Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance, Vehicle Diagnostics, Remote Door Unlock, Roadside Assistance, Turn-by-Turn Navigation, and Hands-Free ...

Setting the 12/24 Hour Format
1. Press the CONFIG button and select Time and Date Settings, or press . 2. Highlight Set Time Format. 3. Press SELECT to select the 12 hour or 24 hour display format. ...