Chevrolet 2012 Tahoe Owner's Manual page 133

two seconds to select the next
available variance zone. Repeat
this step until the appropriate
variance zone is displayed.
5. If calibration is necessary,
calibrate the compass. See
Compass Calibration
Procedure following.
Compass Calibration
The compass can be manually
calibrated. Only calibrate the
compass in a magnetically clean
and safe location, such as an open
parking lot, where driving the
vehicle in circles is not a danger.
It is suggested to calibrate away
from tall buildings, utility wires,
manhole covers, or other industrial
structures, if possible.
If CAL should ever appear in the
DIC display, the compass should be
calibrated.
If the DIC display does not show a
heading, for example, N for North,
or the heading does not change
after making turns, there may be a
strong magnetic field interfering with
the compass. Such interference
may be caused by a magnetic CB
or cell phone antenna mount, a
magnetic emergency light, magnetic
note pad holder, or any other
magnetic item. Turn off the vehicle,
move the magnetic item, then turn
on the vehicle and calibrate the
compass.
To calibrate the compass, use the
following procedure:
Compass Calibration Procedure
1. Before calibrating the compass,
make sure the compass zone is
set to the variance zone in which
the vehicle is located. See
Compass Variance (Zone)
Procedure earlier in this
section.
Do not operate any switches
such as window, sunroof,
climate controls, or seats during
the calibration procedure.
Instruments and Controls
2. Press the vehicle information
button until PRESS
CALIBRATE COMPASS
displays. Or, if the vehicle does
not have DIC buttons, press
the trip odometer reset stem
until CALIBRATE COMPASS
displays.
3. Press the set/reset button to
start the compass calibration.
Or, if the vehicle does not have
DIC buttons, press and hold
the trip odometer reset stem
for two seconds to start the
compass calibration.
4. The DIC will display
CALIBRATING: DRIVE IN
CIRCLES. Drive the vehicle
in tight circles at less than
8 km/h (5 mph) to complete
the calibration. The DIC
will display CALIBRATION
COMPLETE for a few seconds
when the calibration is complete.
The DIC display will then return
to the previous menu.
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