See also:

Buying New Tires
GM has developed and matched specific tires for the vehicle. The original equipment tires installed were designed to meet General Motors Tire Performance Criteria Specification (TPC Spec) ...

Speedometer
The speedometer shows the vehicle's speed in either kilometers per hour (km/h) or miles per hour (mph). ...

Radio Settings
Press the Config button on the Home Page or the CONFIG button on the faceplate to enter the menu options. Turn the MENU knob or touch-tap the scroll bar to scroll through the available optio ...