Chevrolet/GMC 2013 DURAMAX Diesel, Owner'S Manual

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Black plate (31,1)
Chevrolet/GMC DURAMAX Diesel - 2013 - CRC - 5/29/12
Driving and Operating 9-31
5. Open the fuel filter vent valve by
turning the screw
counterclockwise several full
turns. The vent valve is located
on top of the fuel filter housing.
6. Repeatedly push down on the
fuel filter priming pump with the
palm of your hand. The pump is
located on top of the fuel filter
housing. Let the pump return
upward between pushes.
7. Operate the priming pump until a
small amount of fuel seeps from
the vent valve. When fuel is
seen, the filter is now full of fuel
and the system should be
primed.
8. Close the vent valve. Clean any
fuel that accumulated on the fuel
filter. Attempt to start the engine.
The engine may start and stall.
If this occurs, operate the
priming pump several times in
between starting attempts. Once
the engine stays running, allow it
to idle for a few minutes. Check
the filter for leaks.
To Prime the Vehicle (Van Models)
The vehicle has an electric priming
pump. The priming pump is
operated electrically and is
designed to bring fuel to the engine
to eliminate any air in the fuel lines.
To prime the engine:
1. Correct the condition that
caused the loss of prime by
making sure there is fuel in
the tank.
2. Turn the ignition key on for
30 seconds. The fuel pump will
be operating and starting the
priming process. Do not start the
engine during the first
30 seconds.