Chevrolet 2007 TrailBlazer Spezifikationen PDF herunterladen (Seite 142)

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, do the following:

1. Find your current location and variance

zone number on the following zone map.

2. Press and hold the COMP button until a zone

number appears in the display.

3. Press the COMP button on the bottom of the

mirror until the new zone number appears in

the display. After you stop pressing the

button, the display will show a compass

direction within a few seconds.

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