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Chevrolet 1997 Blazer Owner's Manual page 112

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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 USMET
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.
2.
3.
4.
Find your location on the zone map earlier in this
section. Note your zone number.
Press and hold both the MODE and the US/MET
buttons in the COMPREMP mode.
After five seconds, the compass will acknowledge
the variation mode by displaying the current zone
number. When it does, release both buttons.
Press USMET 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:
AVG ECON: The average fuel economy since the
INST ECON:
Instantaneous fuel economy for the
last reset is displayed.
last second of driving is displayed.
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.
FUEL USED:
The fuel used since the last reset
is displayed.
AVG SPEED: The average speed since the last
To reset the trip computer, press the MODE and
USMET buttons simultaneously for at least two
seconds. All functions will be displayed for half a
second once the system is reset. Reset can only be
performed in the AVG ECON, FUEL USED and
AVG SPEED modes. All three modes are reset
simultaneously.
reset is displayed.
2-55

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