See also:

Rear Door Security Locks
Your vehicle may have this feature. You can lock the rear doors so they cannot be opened from the inside by passengers. To use one of these locks do the following: 1. Open one of the rear doors. ...

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. ...

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 ...