2003 GMC Yukon Owner's Manual - Page 220

CHECK WASHER FLUID If the washer fluid level is low, this message will appear on the DIC. Press the select button to acknowledge the message and clear it from the DIC display. The message will clear itself after 10 seconds, or until the next ignition cycle. Adding washer fluid will clear the message. ENGINE OVERHEATED If the engine cooling system reaches unsafe temperatures for operation, this message will appear in the DIC and you will hear a chime. Stop and turn off the vehicle as soon as it is safe to do so to avoid severe damage. The message will clear when the engine has cooled to a safe operating temperature. DRIVER DOOR AJAR If the driver's door is not fully closed, this message will appear on the display and you will hear a chime. Stop and turn off the vehicle, check the door for obstacles, and close the door again. Check to see if the message still appears on the DIC. Press the select button to acknowledge the message and clear it from the DIC display. FUEL LEVEL LOW If the fuel level is low, this message will appear on the DIC and you will hear a chime. Refuel as soon as possible. Press the select button will acknowledge this message and clear it from the DIC display. LEFT REAR DOOR AJAR If the driver's side rear door is not fully closed, this message will appear on the display and you will hear a chime. Stop and turn off the vehicle, check the door for obstacles, and close the door again. Check to see if the message still appears on the DIC. Press the select button to acknowledge the message and clear it from the DIC display. 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. To acknowledge this message press the select button. LOW COOLANT LEVEL If your vehicle is equipped with a low coolant level sensor, this message will appear on the DIC if the engine coolant level is low. Adding coolant will clear the message. 3-66