Water in Fuel Warning Light
This light is located above
the climate controls in the
center of the instrument
panel.
If your vehicle has the 6.6L DURAMAX
®
or a
Caterpillar
®
diesel engine, this light will come on to
warn you that there is water in the fuel system.
For more information on how this light works, see Water
in Fuel on page 5-12.
Change Fuel Filter Warning Light
For vehicles with this light,
it is located in the center of
the instrument panel.
If your vehicle has the DURAMAX
®
6.6L engine, this
light will come on when the fuel filter needs to be
changed. If your vehicle has the Isuzu 6H 7.8L L6 diesel
engine, this light will come on when water is detected
in the fuel system and when the fuel filter needs to
be changed. See Fuel Filter Replacement on page 5-18
and Water in Fuel on page 5-12 for more information.
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