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Compass Calibration
The compass may need calibration if one of the
following occurs:
•
If CAL is displayed while driving in the vehicle.
•
After approximately five seconds, the display
does not show a compass heading, N for
North, for example, there may be a strong
magnetic field interfering with the compass.
Such interference may be caused by a
magnetic antenna mount, magnetic note pad
holder, or a similar magnetic item.
•
The compass does not display the correct
heading and the compass zone variance
is set correctly.
In order to calibrate, CAL must be displayed in the
mirror compass windows. If CAL is not displayed,
push in the COMP button for approximately
eight seconds or until CAL is displayed.
The compass can be calibrated by driving the
vehicle in circles at 5 mph (8 km/h) or less until the
display reads a direction.
Compass Variance
The mirror is set in zone eight upon leaving the
factory. It will be necessary to adjust the compass
to compensate for compass variance if the
vehicle is outside zone eight. Under certain
circumstances, as during a long distance
cross-country trip, it will be necessary to adjust for
compass variance. Compass variance is the
difference between earth’s magnetic north and true
geographic north. If not adjusted to account for
compass variance, your compass could give false
readings.
150
Summary of Contents for 2007 Avalanche
Page 6: ...These are some examples of symbols that may be found on the vehicle 6 ...
Page 22: ...Put someone on it Get it up to speed Then stop the vehicle The rider does not stop 22 ...
Page 201: ... NOTES 201 ...
Page 202: ...Instrument Panel Overview 202 ...
Page 354: ... NOTES 354 ...
Page 568: ... NOTES 568 ...
Page 587: ...Engine Drive Belt Routing 587 ...
Page 612: ... NOTES 612 ...