Mirrors; Automatic Dimming Rearview Mirror With Onstar , Compass And Temperature Display - GMC Yukon XL Denali 2005 Owner's Manual

Mirrors

Automatic Dimming Rearview Mirror
®
with OnStar , Compass and
Temperature Display
Your vehicle may have this feature. When on, the
automatic dimming mirror dims to the proper level to
minimize glare from lights behind you after dark.
The mirror has a dual display in the upper right corner
of the mirror face that shows the compass reading
and the outside temperature.
Control buttons for the OnStar
of the mirror. See OnStar
information about the services OnStar
P (On/Off): This is the on/off button.
Temperature and Compass Display
Press the on/off button, located to the far left, briefly to
turn the compass/temperature display on or off.
If the display reads CAL, the compass needs to be
calibrated. For more information, see "Compass
Calibration" following.
2-32
®
system are at the bottom
®
System on page 2-37 for more
®
provides.
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 F or C appears.
2. Press the button again to change the display to the
desired unit of measurement. After approximately
four seconds of inactivity, the new unit will be locked
in and the compass/temperature display will return.
If an abnormal temperature reading is displayed for an
extended period of time, please see your GM dealer.
Under certain circumstances, a delay in updating
the temperature is normal.
Automatic Dimming Mirror Operation
The automatic dimming mirror function is turned
on automatically each time the ignition is started. To
operate the automatic dimming mirror, do the following:
1. Make sure the green indicator light, located to the left
of the on/off button, is lit. If it is not, press and hold
the on/off button for approximately six seconds until
the green light comes on, indicating that the mirror is
in automatic dimming mode.
2. Turn off the automatic dimming mirror function by
pressing and holding the on/off button for
approximately six seconds, until the green indicator
light turns off.