Black plate (29,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 6/5/14
Driving and Operating
9-29
Problem
Recommended
Action
Message
displays and
stays on.
Drain the fuel
filter
immediately.
If no water can
be drained, and
the temperature
is below
freezing, then
water may be
frozen in the
filter. Move the
vehicle to a
warm location to
thaw, then drain
the fuel. If still
no water drains,
see your dealer.
Problem
Recommended
Action
Immediately
after refueling,
message
displays and
stays on.
A large amount
of water is in the
fuel tank. Drain
the fuel filter
immediately.
If the message
stays on,
or comes back
on again without
refueling, fuel
tank purging is
required. See
your dealer.
If the message
displays and the
vehicle stalls or
has rough
riding, do not
drive until the
water
contaminated
fuel is drained.
{
Caution
Driving with this message on can
damage the fuel injection system
and the engine. If the message
comes on right after a refuel,
water was pumped into the fuel
tank. Turn off the engine and
drain the water immediately.
Removing Water from Fuel
Filter
To drain water:
1. Turn the engine off and apply
the parking brake.
2. Remove the fuel cap.
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