2003 Chevrolet Avalanche Owner's Manual - Page 118

Mirrors Automatic Dimming Rearview Mirror with Onstar@,Compass and Temperature Display Your vehicle may have this feature. When on, an electrochromic mirror automatically dims to the proper level to minimize glare from lights behind you after dark. If the display reads CAL, you will need to calibrate the compass. For more information on calibration, see below. To adjust between Fahrenheit and Celsius do the following: 1. Press and hold the on/off button for approximately four seconds until either a flashing OF, or "C appears. 2. Press the button again to change the display to the desired unit of measurement. Afterapproximately four secondsof inactivity, the new unit will be locked in and the compass/temperature display will return. Electrochromic Mirror Operation The electrochromic (self dimming) mirror function is turned on automatically each time the ignition is started. To operate the electrochromic mirror do the following: The mirror also includes a duel display in the upper right corner of the mirror face. The compass reading and the outside temperature will both appear in the display at the same time. 1. Make sure the green indicator light, located to the left of the on/off button, is lit. If it's not, press and hold the on/off button for approximately six seconds until the green light comes on, indicating that the mirror is in electrochromic (self dimming) mode. 2. Turn off the electrochromic mirror function by pressing and holding the on/off button for approximately six seconds until the green indicator light turns off. (, (OdOff): I This is the on/off button. Temperature and Compass Display Press the on/off button, located to the far left, briefly to turn the comp/temp display on or off. 2-45