GMC 2003 Envoy - Manual (Page 104)

Mirrors
Automatic Dimming Rearview Mirror
with OnStar® and Compass
Voui vaiiicle may have an automatiC’dimmng rearview
mtrrer wim a compass and the OnSlai^' system
Cb (On/Otl): This ts the on/off buitan tgr ihe aulomailc
dimming feature and compass,
There are three additional buttons for the OnStaf*'
system. Seo your dealer lor more inlormattan on
the syslem and how to subscribe to OnStar^'. See
OnStai^ System on page 2-40 for more intormalion
about the services OnStar^ provides.
Mirror Operation
When turned on, this mirror auEomatioaily dims to the
proper lovel
\o minimize glare (rom any headlamps
behind you after dark
The automatic dimriiing leatuire is turned on and off by
pressing the lar loft button, located on the lower
pari ot the mirror face, for up to three seconds.. A light
on the mirror will bd lit while the feature is turned on.
Compass Operation
Press the cn/oM button once lo turn the compass
on Or oK+
There is a compass display in the window In the upper
right comer qf Ihe mirror face. The compass displays
& maxi mum of two characters. For examplej "NE"
is displayed for north-easl.
Compass Calibration
Press and hold The on/off button down lor nine seconds
to activate the compass calibration mode. "CAL" will
tre displayed m the compass window oi^ ihe mirror.
The mirror can he calibrated in one oí two ways:
• Drtve the vehicle in circles at 5 mph [0 kmi'h) or less
unlil the display shows "CAL", or
♦ drive the vehicle on your everyday routine.
(This method may taka longer to calibrate.)
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