MirrorsAutomatic Dimming Rearview Mirrorwith Intellibeam™, OnStar®, andCompassYour vehicle may have an automatic dimmingrearview mirror with OnStar® and a compassdisplay. For more information, see OnStar®System on page 135. For more information onIntellibeam™, see “Intellibeam IntelligentHigh-Beam Headlamp Control System” underExterior Lamps on page 186.The mirror includes an eight-point compassdisplay in the upper right corner of the mirror face.When on, the compass automatically calibratesas the vehicle is driven.Automatic DimmingYour vehicle is equipped with an automaticdimming rearview mirror. The automatic dimmingfeature is activated whenever the vehicle isturned on and dims only during nighttime driving.Compass OperationAUTO 3: Press and hold the “auto highbeam”button for approximately three seconds to turnthe compass on or off.When the ignition and the compass feature areon, the compass will show two character boxesfor about two seconds. After two seconds,the mirror will display the compass heading.Compass CalibrationIf after two seconds the display does not show thecorrect direction, (N for North for example),there may be a strong magnetic field interferingwith the compass. Such interference may becaused by a magnetic antenna mount, magneticnote pad holder, or a similar magnetic item.The compass can be placed in calibration modemanually by pressing and holding the “autohighbeam” button for approximately nine secondsuntil a C is shown in the compass display.The mirror can then be calibrated by driving thevehicle in circles at 5 mph (8 km/h) or less until thedisplay reads a direction.128
