Safety Belt Reminder Light - Chevrolet S10 Pickup 2003 Owner's Manual

Tachometer
The tachometer (if equipped) displays the engine speed
in revolutions per minute (rpm).
Notice: On vehicles with a manual transmission, if
you operate the engine with the tachometer in
the shaded warning areas, your vehicle's engine or
other parts of your vehicle could be damaged.
Damage to your engine or vehicle caused by
operating the engine with the tachometer in the
shaded warning areas isn't covered by your vehicle
warranty. Don't operate the tachometer in the
shaded warning areas.
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Safety Belt Reminder Light

When the key is turned to RUN or START, a chime will
come on for several 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 several seconds,
then it will flash for several
more.