2000 GMC Yukon Owner's Manual - Page 129

Electrochromic Mirror Operation The right side of the button, labeled TEMP and located at the bottom of the mirror, turns the electrochromic mirror on and off. An indicator light, located to the right of the TEMP button, will come on when the electrochromic mirror is turned on. To turn the mirror on, press and hold the TEMP button for 15 seconds. To turn the mirror off, press and hold the TEMP button for 15 seconds. The indicator light will turn off. Compass Operation With the ignition on, the compass will show two character boxes. The mirror will display the compass heading. 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. Compass Calibration The compass may need calibration if: D After five seconds, the display does not show a compass heading ("N" for North, for example), there may be a strong magnetic field interfering with the compass. Such interference may be caused by a magnetic antenna mount, magnetic note pad holder or a similar magnetic item. and the compass zone variance is set correctly. D The compass does not display the correct heading In order to calibrate, the letter "CAL" must be displayed in the mirror compass windows. If "CAL" is not displayed, push in the "COMP" button for approximately eight seconds or until the letter "CAL" is displayed. The compass can be calibrated in one of two ways: D Drive the vehicle in circles at five mph (8 km/h) or less until the display reads a direction, or D Drive the vehicle on your everyday routine and after several turns the compass will become calibrated and will display a direction. 2-52