Automatic Dimming Rearview Mirror
with OnStar
®and Compass
Your vehicle may have an automatic dimming
rearview mirror with a compass and OnStar®
controls. For more information about OnStar®,
seeOnStar®System on page 148.
The automatic dimming feature turns on each time
the vehicle is started. To turn automatic dimming
off or on, press the left button below the mirror.
A green indicator light will be on when automatic
dimming is on.
There are also three OnStar
®buttons located at
the bottom of the mirror. See your dealer for more
information on the system and how to subscribe
to OnStar
®. SeeOnStar®System on page 148for
more information about the service OnStar®
provides.
Compass Operation
Press the on/off button once to turn the compass
on or off.
When the ignition and the compass feature are
on, the compass will show two character boxes for
a few seconds. After a few seconds, the mirror
will display the current compass direction.
Compass Calibration
If after a few seconds the display does not show a
compass direction, (N for North for example), there
may be a strong magnetic eld interfering with the
compass. Such interference may be caused by a
magnetic antenna mount, note pad holder, or
similar object. If the letter C appears in the compass
window, the compass may need to be reset or
calibrated.
The mirror can be calibrated by driving the vehicle
in circles at 5 mph (8 km/h) or less until the
display reads a direction.
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When the ignition is on, the brake system warning
light will also come on when you set your
parking brake. The light will stay on if your parking
brake does not release fully. If it stays on after
your parking brake is fully released, it means you
have a brake problem.
If the light comes on while you are driving, pull off
the road and stop carefully. Make sure the parking
brake is fully released. You may notice that the
pedal is harder to push or, the pedal may go closer
to the oor. It may take longer to stop. If the light is
still on, have the vehicle towed for service. See
Towing Your Vehicle on page 293.
{CAUTION:
Your brake system may not be working
properly if the brake system warning light
is on. Driving with the brake system
warning light on can lead to an accident.
If the light is still on after you have pulled
off the road and stopped carefully, have
the vehicle towed for service.
Anti-Lock Brake System
Warning Light
If your vehicle has the
anti-Lock Brake System
(ABS), this light will
come on when your
engine is started and
may stay on for several
seconds. That is normal.
If the light stays on, turn the ignition to OFF. Or, if
the light comes on when you are driving, stop
as soon as possible and turn the ignition off. Then
start the engine again to reset the system. If
the light still stays on, or comes on again while
you are driving, your vehicle needs service. If the
regular brake system warning light is not on,
you still have brakes, but you do not have anti-lock
brakes. If the regular brake system warning light
is also on, you do not have anti-lock brakes
and there is a problem with your regular brakes.
SeeBrake System Warning Light on page 199.
The ABS warning light will come on brie y when
you turn the ignition key to ON. This is normal. If the
light does not come on then, have it xed so it will
be ready to warn you if there is a problem.
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