Running Out Of Fuel - GMC Duramax Diesel 2018 Owner's Manual Supplement

5. Repeat the above steps until
the engine starts.
6. If the engine starts, but does
not run smoothly, increase the
engine speed slightly.
7. If the engine starts and runs
but stalls again, turn the
ignition off for 60 seconds.
8. When the engine starts, let it
idle for a few minutes and
check the filter 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.

Running Out of Fuel

8-Cylinder Pickup Models
Warning
Diesel fuel is combustible. It could
start a fire if it gets on hot engine
parts. You could be burned. Catch
(Continued)
Warning (Continued)
any fuel from the air bleed valve,
and wipe up any spilled fuel with
a cloth.
If the engine has stalled due to
running out of fuel, try the following
steps to restart it:
1. If parked on a level surface,
add at least 7.6 L (2 gal) of
fuel. Up to 18.9 L (5 gal) may
be needed if parked on a
slope.
2. Follow the fuel priming
procedure earlier in this section
to prime the fuel filter.
3. Turn the ignition key to START
for 10 to 15 seconds at a time
until the engine starts. If the
engine tries to run, but does
not run smoothly, increase the
rpm slightly by using the
accelerator pedal. This will help
force air through the system.
4. Return to Step 2 if the engine
stalls and will not restart.
Driving and Operating
5. After a few attempts, if the
engine still does not start, see
your dealer.
4-Cylinder Pickup and Van
Models
If the engine has stalled due to
running out of fuel, try to restart it:
1. If parked on a level surface,
add at least 3.8 L (1 gal) of fuel.
Up to 18.9 L (5 gal) may be
needed if parked on a slope.
2. Follow the vehicle fuel system
priming procedure earlier in
this section to re-prime the
system and restart the engine.
If the check engine light comes on
due to running out of fuel, it may
take a few drive cycles to clear.
On van models only, the fuel
operated heater (FOH) stops
automatically when the fuel tank
volume is less than or equal to 10%
of the total tank. The FOH fuel lines
will not need to be primed if the
vehicle runs out of fuel.
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