See also:

Speedometer
Displays a digital speedometer in the DIC. The speed displays in either kilometers per hour (km/h) or miles per hour (mph). To change the units from English to metric, see “Units” later in t ...

Turn-by-Turn
This display is used for the OnStar or Navigation System Turn-by-Turn guidance. See OnStar Overview or the navigation manual, if the vehicle has navigation, for more information. ...

Tire Pressure for High-Speed Operation
WARNING Driving at high speeds, 160 km/h (100 mph) or higher, puts an additional strain on tires. Sustained high-speed driving causes excessive heat buildup and can cause sudden tire failure. Yo ...