GMC 1999 Jimmy Owner's Manual page 124

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The compass is self calibrating, so it does not need to be
manually set. However, if C (Calibration) is displayed,
the compass will need to be calibrated. You may also
place the compass in a noncalibrated mode by pressing
and holding the MODE and US/MET buttons
simultaneously while in the COMP/TEMP mode. After
about 10 seconds, the compass will display C and you
can release the buttons. Drive the vehicle in a complete
360 _ circle three times at a speed of less than 5 mph
(8 km/h), and the compass will function normally. Once
the calibration is complete, the display will return to a
compass reading.
Variance is the difference between magnetic north and
geographic north. In some areas, the difference between
the two can be great enough to cause false compass
readings. If this happens, follow these instructions to set
the variance for your particular location:
1. Find your location on the zone map earlier in this
section. Note your zone number.
2. Press and hold both the MODE and the US/MET
buttons in the COMP/TEMP mode.
3. After five seconds, the compass will acknowledge
the variation mode by displaying the current zone
number. When it does, release both buttons.
2-60
4. Press US/MET until your zone number appears on
the display.
5. Press MODE to enter your zone number. Your
variance is now set and the display will return to the
COMP/TEMP mode.
TRIP: Once in the TRIP mode, pressing the
MODE button will step you through the following
TRIP functions:
D
AVG ECON: The average fuel economy since the
last reset is displayed.
D
INST ECON: Instantaneous fuel economy for the
last second of driving is displayed.
D
RANGE: The display indicates the estimated
distance that can be travelled with the remaining fuel
in the tank, based on the fuel economy for the last
few hours of driving.
D
FUEL USED: The fuel used since the last reset
is displayed.
D
AVG SPEED: The average speed since the last reset
is displayed.
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