Charging System Light; Voltmeter Gage - Chevrolet 2006 Avalanche Owner's Manual

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Charging System Light

It should go out once the engine is running. If it stays on,
or comes on while you are driving, you may have a
problem with the charging system. It could indicate that
you have problems with a generator drive belt, or another
electrical problem. Have it checked right away. Driving
while this light is on could drain your battery.
When this light comes on the DIC will also display the
battery not charging message. See DIC Warnings
and Messages on page 3-53.
If you must drive a short distance with the light on, be
certain to turn off all your accessories, such as the radio
and air conditioner.
The charging system light
will come on briefly when
you turn on the ignition,
but the engine is not
running, as a check to
show you it is working.

Voltmeter Gage

When the engine is running, the gage shows the
condition of the charging system. The gage may
transition from a higher to lower or a lower to higher
reading, this is normal. Readings between the low and
high warning zones indicate the normal operating
range.
When your engine is not
running, but the ignition is
in RUN, this gage
shows your battery's state
of charge in DC volts.
3-37

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