See also:

Unit
Move to switch between metric or US when the Unit display is active. Press SET/CLR to confirm the setting. This will change the displays on the cluster and DIC to either metric or English ( ...

Customization Button
(Customization): Press the customization button to access the VEHICLE SETTINGS menu and customize the settings to your vehicle. ...

Place a Call Using a Stored Number
1. Push . System responds: “OnStar ready.”. 2. Say “Call <name tag>.” System responds: “OK, calling <name tag>.” ...