2003 GMC Sierra 1500 Pickup Owner's Manual - Page 215

If you accidentally choose a language that you don't want or understand, press and hold the personalization 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, French will be in French and so on. When you see the language that you would like, release both buttons. The DIC will then display the information in the language you chose. messages require action before they can be removed from the DIC display. The following are thepossible messages that can be displayed and some information about them. CHANGE ENGINE OIL This message is displayed when the engine oil needs to be changed. When you change the engine oil, be sure to reset the CHANGE ENGINE OIL message. See "Engine Oil, When to Change" under Engine Oil on page 5-77. Select Button The select button is used to reset certain functions and turn off or acknowledgemessages on the DIC display. The select button also toggles through the options available in each personalization menu. For example,this button will reset thetrip odometers, turn off the FUEL LEVEL LOW message, and toggle through the languages you can select the DIC display information in. to OIL LIFE RESET This message will appear on the display for about 10 seconds after resetting the change engine oil message. LOW COOLANT LEVEL I f the engine coolant level is low, this message will appear on the DIC. Adding coolant will clear the message. DIC Warnings and Messages Warning messages are displayed on the DIC to notify the driver that the status of the vehicle has changed and that some action may be needed by the driver to correct the condition. If there is more than one message that needs to be displayed they will appear one after another. Some messages may not require immediate action but you should press the select button to acknowledge that you received the message and clear it from the display because they are more urgent. These ENGINE COOLANT HOT If the cooling system temperature gets hot,this message will appear in the DIC. Stop the vehicle and let the engine idle in PARK (P) to allow the coolant to reach a safe temperature. This message will clear when the coolant temperature drops to safe operating temperature. 3-60