Chevrolet 2009 Kodiak Owner's Manual page 216

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 the fuel system and the fuel system
needs to be primed 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.
5-14
Priming the 6.6L Duramax
If the vehicle is equipped with the 6.6L Duramax
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 in the fuel
lines.
To prime the 6.6L Duramax
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 Engine
®
diesel
®
diesel engine, do the