Outside Trailer-Tow Mirrors - Chevrolet Suburban 2007 Owner's Manual

Outside Trailer-Tow Mirrors

If your vehicle is equipped with this trailer towing
type mirror, they can be adjusted so you can
have a clear view of the objects behind you.
Manually pull out the mirror head to extend it for
better visibility when towing a trailer.
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These mirrors can be manually folded forward or
rearward. On the lower portion of the mirror is
a convex mirror. A convex mirror's surface
is curved so you can see more from the driver's
seat. The position of the convex mirror must
be adjusted manually to the driver's preferred
position.
Your vehicle may have outside heated mirrors
which help clear them of condensation, snow, and
ice. When the rear window defogger button is
pressed, the heated mirrors are also turned on.
Only the upper glass of the mirror is heated.
The lower convex part of the mirror is not heated.
Your mirror may also have a turn signal arrow
that will flash in the direction of the turn or
lane change.