Gmc 2003 Sierra User Manual download pdf (Page 140)

The dectnochromic (sell dimnning) nimor iunction is

(urnod on automaUcalty each time ihe ii^niiion i& started^

To Dperale the eleclrochnomic tniiror rtn ihe following:

1, Make sare The green Indlcalof lighit, locatEd to

Ihe left of the on/oM button, is lit. If il's not, press

and hold the on.'olf button tor approx!nr>at0ly

Six secoods unhl the green light comes on,

Indiicating that the mimor is Jn electTOchromic (self

dimming) mode.

2. Turn off Uie elecTrochramie mirror Tunchon by

pressing and holding the orVotf button for

approximately six seconds unlil the green indicator

light lurns ofi,

Compass Variance

The miirror is sei in zone eight upon 'leaving the factory.

It will he necessary to adjust the compass fo

cainpensate for compass variance if you live outside of

zone eighl, Under certain circumstances, as during a

long distance cross-country trip, it will be necessary Eo

adjust for compass variance Compass variance is

the difference between earth's magnetic north artd true

geographic north, if not adjusted to account for

compass vanance, your compass could give false

readings.

Electrochromic Miirror Operation

1. Find your curreni location and variance zone

number on the faJtowing zone map,

To adjust for compass variance do the foil owing:

2. Priest and hold the orVoH button until a 2 and a

zone number appears in the display. The compass

is now in zone made.

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Gmc 2003 Sierra User Manual Page 140