Chevrolet 2007 TrailBlazer Spezifikationen PDF herunterladen (Seite 139)

Compass Variance

Compass variance is the difference between

earth’s magnetic north and true geographic north.

The mirror is set to 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, such as during a long distance

cross-country trip, it will be necessary to adjust for

compass variance. 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 on/off button for

six seconds. Release the button when

(FOR ZONE) is displayed. The number

shown is the current zone number.

3. Scroll through the zone numbers that appear in

the window on the mirror by pressing the on/off

button. Once you ﬁnd your zone number,

release the button. After about four seconds,

the mirror will return to the compass display,

and the new zone number will be set.

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