2006 GMC Yukon Owner's Manual - Page 140

Automatic Dimming Rearview Mirror with Compass and Temperature Display Your vehicle may be equipped with this feature. When on, an automatic dimming mirror will dim to the proper level to minimize glare from lights behind you after dark. The mirror also includes a dual display in the upper right corner of the mirror with the compass reading and the outside temperature. The display can be turned on or off by briefly pressing either the TEMP or the COMP button. Automatic Dimming Mirror Operation Press and hold the TEMP button for approximately eight seconds to turn the automatic dimming feature on or off. The indicator light to the left of the TEMP button will turn on or off to indicate when the feature is on. Once the mirror is turned off, it will remain off until it is turned back on, or until the vehicle is restarted. Compass Operation Press the COMP button once briefly to turn the compass on or off. When the ignition is started and the compass feature is on, the compass will show two character boxes for approximately two seconds. After two seconds, the mirror will display the compass heading. Temperature Display The temperature can be displayed by pressing the TEMP button. Pressing the TEMP button once briefly, will toggle the temperature reading on and off. To alternate the temperature reading between Fahrenheit and Celsius, press and hold the TEMP button for approximately four seconds until the display blinks F and C. Press and release the TEMP button to toggle between the Fahrenheit and Celsius readings. After approximately four seconds of inactivity, the display will stop blinking and display the last selection made. Press and release the TEMP button to toggle the temperature display between Fahrenheit or Celsius. If an abnormal reading is displayed, please consult your GM dealer. 2-44 Compass Calibration The compass may need calibration if one of the following occurs: • If CAL is displayed while driving in the vehicle. • After approximately 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. • The compass does not display the correct heading and the compass zone variance is set correctly.