GMC 2012 Savana - Manual (Page 120)

Black plate (6,1) GMC Savana Owner Manual - 2012 - 2nd - 11/11/11
5-6 Instruments and Controls
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, climate
controls, seats, etc. during the
calibration procedure.
2. Press
T
until PRESS
V
TO
CALIBRATE COMPASS
displays.
3. Press
V
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
PRESS
V
TO CALIBRATE
COMPASS.