Safety Belt Reminder Light - Chevrolet 2002 Cavalier Owner's Manual

Gages can indicate when there may be or is a problem
with one of your vehicle's functions. Often gages and
warning lights work together to let you know when
there's a problem with your vehicle.
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
dangerous. So please get to know your warning lights
and gages. They're a big help.
--
and even

Safety Belt Reminder Light

When the key is turned to RUN or START, a chime will
come on for about eight seconds to remind people to
fasten their safety belts, unless the driver's safety belt is
already buckled.
If the driver's belt is already buckled, neither the chime
nor the light will come on.
The safety belt light
will also come on and stay
on for about 20 seconds,
then it will flash for
about 55 seconds.
2-61