Chevrolet/GMC 2013 DURAMAX Diesel, Owner'S Manual

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Black plate (23,1)
Chevrolet/GMC DURAMAX Diesel - 2013 - CRC - 5/29/12
Driving and Operating 9-23
Fuels improperly blended for
cold temperature operation may
result in restricted fuel filters and
degraded vehicle performance.
Your vehicle is equipped with a
fuel heating system to provide a
level of protection against filter
plugging from gelling (waxing) of
conventional diesel fuel and
biodiesel blends. However, the
system will not prevent all cases
of plugged filters if the operating
temperature is far below the
temperature at which gelling or
waxing of the fuel occurs (cloud
point).
Use of biodiesel blends greater
than B5 (5% blend) should be
avoided in cold temperatures.
. Vehicles operated for extended
periods of time on conventional
diesel fuel and then switched to
biodiesel blends may experience
premature fuel filter clogging and
require more frequent fuel filter
service.
With long-term use of
conventional diesel fuel, gum
and varnish may be deposited
within the tank and fuel system.
These deposits, while not
problematic with the use of
conventional diesel fuel, may
become loosened with a sudden
switch to biodiesel blends and
cause fuel filter plugging.
This vehicle is equipped with a
fuel filter restriction monitoring
system that will alert you if the
fuel filter requires service, but it
will not prevent damage caused
by poor quality biodiesel.
. Use of biodiesel blends will
degrade the performance of your
vehicle
’ s water separator.
Biodiesel reduces the
effectiveness of the vehicle
’ s
water separator, and in the event
of water contamination of the
fuel, increases the risk of
damage to the fuel system.
Refueling
Diesel fuel can foam when you fill
the tank. This can cause the
automatic pump nozzle to shut off,
even though the tank is not full.
If this happens, wait for the foaming
to stop, and then try filling the tank
more slowly. See
Filling the Tank on
page 9 ‑ 36 .
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WARNING
Heat coming from the engine can
cause the fuel to expand and
force the fuel out of the tank.
If something ignites the fuel, a fire
could start and people could be
burned. To help avoid this, try
filling the tank more slowly and fill
the fuel tank only until the
automatic nozzle shuts off. Do not
try to top it off.