2004 GMC Canyon Owner's Manual - Page 119

Temperature Display Operation The outside air temperature is displayed in the window located at the lower center of the mirror face. Press and hold the far right button for four seconds and release. This will change the temperature reading between degrees Fahrenheit, degrees Celsius, or turn the display off. Outside Manual Mirrors Adjust these mirrors by hand so that you can just see the side of your vehicle when you are sitting in a comfortable driving position. The mirrors can be folded inward to prevent damage when going through an automatic car wash. To fold, push the mirror toward the vehicle. To return the mirror to its original position, push outward. Be sure to return both mirrors to the unfolded position before driving. Cleaning the Mirror When cleaning the mirror, use a paper towel or similar material dampened with glass cleaner. Do not spray glass cleaner directly on the mirror as that may cause the liquid cleaner to enter the mirror housing. 2-39