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 you live
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.
To adjust for compass variance:
1. Find your current location and variance zone
number on the following zone map.
2. Press and hold the COMP button for
five seconds until a zone number appears in
the display.
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Summary of Contents for Silverado Classic 2007
Page 6: ...These are some examples of symbols that may be found on the vehicle 6 ...
Page 106: ... NOTES 106 ...
Page 207: ... NOTES 207 ...
Page 354: ... NOTES 354 ...
Page 484: ...When you open the hood on the 8 1L V8 engine here is what you will see 484 ...
Page 606: ...606 ...
Page 634: ...Engine Drive Belt Routing A Air Conditioning Compressor V6 Engines V8 Engines 634 ...
Page 660: ... NOTES 660 ...