Chevrolet kodiak 2004 Owner's Manual page 217

Sometimes, water can be pumped into your fuel tank
along with your diesel fuel. This can happen if a service
station doesn't regularly inspect and clean its fuel
tanks, or if it gets contaminated fuel from its suppliers.
If it comes on, use the following chart.
Water In Fuel Light Chart
Problem
Light comes on
intermittently.
Light stays on at
temperatures above
freezing.
If this happens, a
water-in-fuel light will come
on. If it does, the water
must be drained. Your
dealer can show you how
to do this.
Recommended Action
Drain water from fuel
filter.
Drain fuel filter
immediately. If no water
can be drained and light
stays on, see your dealer
for assistance.
Water In Fuel Light Chart (cont'd)
Problem
Light stays on at
temperatures below
freezing.
Light stays on
immediately after
refueling, large amount of
water possibly pumped
into fuel tank.
Notice: If you drive when this warning indicator is
on, you can damage your fuel injection system
and your engine. If the indicator comes on right after
you refuel, it means water was pumped into your
fuel tank. Turn off your engine immediately.
Then, have the water drained at once.
Recommended Action
Drain fuel filter
immediately. If no water
can be drained — water
may be frozen in water
drain system. Water may
be frozen in the fuel lines.
Move the vehicle to a
warm location to thaw
out, and then drain filter
system.
Fuel tank purging
required. See your dealer
for assistance.
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