Clock - GMC Chevrolet Express 2022 Owner's Manual

68 Instruments and Controls
To adjust for compass variance, use the
following procedure:
Compass Variance (Zone) Procedure
1. Do not set the compass zone when the
vehicle is moving. Only set it when the
vehicle is in P (Park).
Press until PRESS TO CHANGE
COMPASS ZONE displays.
2. Find the vehicle's current location and
variance zone number on the map.
3. Press to scroll through and select the
appropriate variance zone.
4. Press until the vehicle heading, for
example, N for North, is displayed in
the DIC.
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
until PRESS TO CALIBRATE
COMPASS displays.
3. Press 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.

Clock

Setting the Time or Date
H
1. With the radio on, press
MIN, MM, DD, and YYYY (hour, minute,
month, day, and year) display.
and the HR,