Black plate (32,1)
Chevrolet/GMC DURAMAX Diesel Supplement - 2013 - crc - 8/10/12
9-32
Driving and Operating
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.
3. After completing the initial prime
in Step 2, turn the ignition off,
then back to start, and crank the
engine for 15 seconds.
4. If the engine does not start,
repeat Steps 2 and 3 until the
engine starts.
5. If the engine does not run after
repeating Steps 2 and 3 three
times, turn the ignition key off for
60 seconds, allowing the
Electronic Control Module (ECM)
to reset.
6. Repeat the above steps until the
engine starts.
7. If the engine runs, but does not
run smoothly, increase the
engine speed slightly by
pressing the accelerator pedal.
This will help to force out air
through the system.
8. If the engine starts and runs but
stalls again, turn the ignition key
off for 60 seconds to reset the
ECM and repeat the steps
above.
