Black plate (31,1)
DURAMAX Diesel Engine (LML/LGH) - 2011
Driving and Operating
9-31
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.
9. When the engine starts, let it idle
for a few minutes and check the
filters for any leaks.
To Prime the Fuel Operated Heater
(FOH) Fuel Lines (Van Models)
See your dealer or qualified
technician if the FOH fuel lines
need to be primed.
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