Outside convex mirror, Outside heated mirrors, Onstar® system – GMC 2007 Envoy User Manual
Page 145: Onstar, System, Outside convex mirror outside heated mirrors, And how, Caution

Outside Convex Mirror
{
CAUTION:
A convex mirror can make things (like
other vehicles) look farther away than
they really are. If you cut too sharply into
the right or left lane, you could hit a
vehicle. Check your inside mirror or
glance over your shoulder before
changing lanes.
The passenger’s outside mirror is convex.
A convex mirror’s surface is curved so more
can be seen from the driver’s seat.
Outside Heated Mirrors
Your vehicle may have this feature. When you
operate the rear window defogger, the defogger
also warms the heated driver’s and passenger’s
outside rearview mirrors to help clear them of ice,
snow and condensation.
OnStar
®
System
OnStar
®
uses several innovative technologies and
live advisors to provide you with a wide range
of safety, security, information, and convenience
services. If your airbags deploy, the system is
designed to make an automatic call to OnStar
®
Emergency advisors who can request emergency
services be sent to your location. If you lock
your keys in the vehicle, call OnStar
®
at
1-888-4-ONSTAR and they can send a signal to
unlock your doors. If you need roadside
assistance, press the OnStar
®
button and they
can contact Roadside Service for you.
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