Warning Lights, Gages And Indicators; Voltmeter Gage - GMC Defense 2006 Owner's Manual Supplement

The lamp mounted override switch (A) is located on
the rear center of the topper roof. If the override
switch is turned OFF the following will occur:
•
The interior mounted 3-way switch will not
function.
•
The bed mounted 3-way switch will not function.
The dome lamp will not function in the blackout
mode.
Warning Lights, Gages and
Indicators
This part describes the 24-voltmeter gage on your
vehicle.
This gage can signal that something is wrong before
it becomes serious enough to cause an expensive
repair or replacement.
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 is a problem with your vehicle.

24-Voltmeter Gage

Readings in either red warning zone indicate a
possible problem in the electrical system. When the
engine is not running, but the ignition is in RUN, this
gage shows the 24-volt battery's state of charge.
When the engine is running, the gage shows the
condition of the 24-volt charging system. Readings in
the low warning zone may occur when a large
number of electrical accessories are operating in the
vehicle and the engine is left at an idle for an
extended period. This condition is normal since the
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