Water in Fuel Warning Light
If your vehicle has the 6.6L DURAMAX
®
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.
3-44
This light is located above
the climate controls in the
center of the instrument
panel.
®
or a
Change Fuel Filter Warning Light
If your vehicle has the DURAMAX
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.
For vehicles with this light,
it is located in the center of
the instrument panel.
®
6.6L engine, this