Chevrolet TrailBlazer 2007 Owner's Manual page 141

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 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.
If an abnormal reading is displayed, for an
extended period of time, please consult your
dealer. Under certain circumstances, a delay in
updating the temperature is normal.
Compass Operation
Press the COMP button once briefly to turn the
compass on or off.
When the ignition and the compass feature are
on, the compass will show two character boxes for
approximately two seconds. After two seconds,
the mirror will display the compass heading.
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.
In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed,
press and hold the COMP button until CAL is
displayed.
The compass can be calibrated by driving the
vehicle in circles at 5 mph (8 km/h) or less until the
display reads a direction.
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