Chevrolet 2007 Kodiak Owner's Manual page 259

Air can get into the fuel lines if any of the following
happen:
•
The vehicle runs out of fuel.
•
The fuel filter is removed for servicing or
replacement.
•
The fuel lines are removed or disconnected
for servicing.
•
The fuel filter water drain valve is opened
while the engine is running.
If one or more of the above occurred, it is very
likely that air has entered your fuel system and that
you will need to prime the fuel system before
operating the vehicle.
Air in the fuel lines will not harm the engine or the
vehicle. However, the engine may not be able
to start until the fuel system is primed and the air
is removed.
Priming the 6.6L DURAMAX
Engine
If your vehicle is equipped with the 6.6L
®
DURAMAX diesel engine, it has a priming pump
which is part of the engine mounted fuel filter.
The vent valve and the fuel filter primer pump are
located on top of the fuel filter housing. The
priming pump is hand operated and is designed to
bring fuel to the engine to eliminate any air that
may be in the fuel lines.
To prime the 6.6L DURAMAX
the following:
1. Make sure there is fuel in the tank.
2. Make sure the fuel filter had been installed
and properly tightened.
3. Make sure the fuel lines are properly
connected and the fuel filter is cool enough
to touch.
4. Remove any dirt from the fuel filter head and
vent valve by wiping with a cloth.
®
Diesel
®
diesel engine, do
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