Battery Warning Light - GMC Sierra 2005 Owner's Manual

If, after several seconds, all status indicator lights
remain on, or if there are no lights at all, there may be a
problem with the lights or the passenger sensing
system. See your dealer for service.
CAUTION:
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If the airbag off indicator and the airbag
readiness light ever come on together, it
means that something may be wrong with the
airbag system. If this ever happens, have the
vehicle serviced promptly, because an
adult-size person sitting in the right front
passenger seat may not have the protection of
the airbag. See Airbag Readiness Light on
page 3-33.

Battery Warning Light

The battery display will also stay on while the key is in
RUN until the engine is started.
If the light stays on after starting the engine it could
indicate a problem with the generator drive belt, or some
other charging system problem. Have it checked right
away. Driving with this light displayed could drain
your battery.
If you must drive a short distance with this light
displayed, it helps to turn off all your accessories, such
as the radio and the air conditioner.
If this light is displayed
when the engine is
running, you may have
a problem with your
charging system.
3-37