2008 GMC Envoy Owner's Manual - Page 198

Language Press the customization button until LANGUAGE: ENGLISH appears in the display. To select your preference for display language, press the select button while LANGUAGE: ENGLISH is displayed on the DIC. Pressing the select button will scroll through the following settings: ENGLISH (default): All messages will appear in English. FRANCAIS: All messages will appear in French. ESPANOL: All messages will appear in Spanish. To select a setting and move on to the next feature, press the customization button while the desired setting is displayed on the DIC. If you accidentally choose a language that you do not want or understand, press and hold the customization button and the trip information button at the same time. The DIC will begin scrolling through the languages in their particular language. English will be in English, Francais will be in French, and Espanol will be in Spanish. When you see the language that you would like, release both buttons. The DIC will then display the information in the language you chose. You can also scroll through the different languages by pressing and holding the trip reset stem for four seconds, as long as you are in the odometer mode. 3-64 Units Press the customization button until UNITS: U.S. (ENGLISH) appears in the display. To select the units of measurement in which the DIC will display vehicle information, press the select button while UNITS: U.S. (ENGLISH) is displayed on the DIC. Pressing the select button will scroll through the following settings: UNITS: U.S. (ENGLISH) (default): All information will be displayed in English units. UNITS: METRIC (km/L): All information will be displayed in metric units. UNITS: METRIC (L/100 km): All information will be displayed in metric units. To select a setting and exit out of the customizable options, press the customization button while the desired setting is displayed on the DIC.