GMC C series 2002, Owner'S Manual

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When one of the warning lights comes on and stays on
when you are driving, or when one of the gages shows
there may be a problem, check the section that tells you
what to do about it. Please follow this manual’s advice.
Waiting to do repairs can be costly
--
and even
dangerous. So please get to know your warning lights
and gages. They’re a big help.
Safety Belt Reminder Light (Option)
When the key is turned to
ON or START, a light will
come on for about eight
seconds to remind people to
fasten their safety belts.
Safety Belt Reminder Tone (Option)
When the key is turned to RUN or START, a tone will
sound for about eight seconds to remind people to fasten
their safety belts.
Charging System Indicator Light
CAUTION:
If your vehicle has an electric/hydraulic parking
brake, do not drive if the charging system light is
on. If the battery drains too much, the parking
brake can suddenly come on and stop the vehicle.
This can cause severe injury to you and others.
The charging system light is
located in the center of the
instrument panel cluster just
above the odometer.
It should come on briefly when you turn on the ignition,
before the engine is running, as a check to show that it
is working.