Outside TemperatureOutside temperature is shown in the mirror display.Temperature will be displayed in Fahrenheit or Celsiusbased on the choice of English or metric in thevehicle’s configuration menu.If an abnormal temperature reading is displayed for anextended period of time, please consult yourdealer/retailer. Under certain circumstances, a delay inupdating the temperature is normal.Cleaning the MirrorWhen cleaning the mirror, use a paper towel or similarmaterial dampened with glass cleaner. Do not sprayglass cleaner directly on the mirror as that may causethe liquid cleaner to enter the mirror housing.Automatic Dimming Rearview Mirrorwith OnStar ® , Compass andTemperature DisplayYour vehicle has this feature. When on, the automaticdimming mirror dims to the proper level to minimizeglare from lights behind you after dark.The mirror has a dual display in the upper right cornerof the mirror face that shows the compass readingand the outside temperature.Control buttons for the OnStar® system are at thebottom of the mirror. See OnStar® System on page 2-50for more information about the services OnStar®provides.P(On/Off): This is the on/off button.Temperature and Compass DisplayPress the on/off button, located to the far left, briefly toturn the compass/temperature display on or off.If the display reads CAL, the compass needs to becalibrated. For more information, see “CompassCalibration” following.To adjust between Fahrenheit and Celsius, do thefollowing:1. Press and hold the on/off button for approximatelyfour seconds until either a flashing F or C appears.2. Press the button again to change the display to thedesired unit of measurement. After approximatelyfour seconds of inactivity, the new unit will be lockedin and the compass/temperature display will return.If an abnormal temperature reading is displayed for anextended period of time, please see your GM dealer.Under certain circumstances, a delay in updatingthe temperature is normal.2-43