Black plate (25,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 6/5/14
Driving and Operating
9-25
.
Vehicles operated for extended
periods of time on Ultra Low
Sulfur 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 Ultra Low
Sulfur Diesel fuel, gum and
varnish may be deposited within
the tank and fuel system. These
deposits, while not problematic
with the use of Ultra Low Sulfur
Diesel fuel, may become
loosened with a sudden switch
to biodiesel blends and cause
fuel filter plugging.
If the vehicle experiences a fuel
filter restriction, the on-board
monitoring system will alert the
driver that the fuel filter requires
service. The fuel filter, however,
will not prevent all damage
caused by poor quality biodiesel.
Refueling
Diesel fuel can foam when filling the
tank. This can cause the automatic
pump nozzle to shut off, even if the
tank is not full. If this happens, wait
for the foaming to stop, and then fill
the tank more slowly. See
{
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. To help avoid this, fill
the tank slowly and only until the
nozzle shuts off. Do not top it off.
Clean up any spilled fuel.
Accidental Refueling with
Gasoline
{
Caution
If the vehicle is accidentally
refueled with gasoline, do not
continue driving the vehicle
except to get to a location where
it can be stopped safely. Driving
the vehicle will damage the fuel
system. Have the vehicle towed
to a qualified technician to have
the gasoline removed from the
tank, preferably until the fuel
gauge reads near E (Empty).
Refuel with Ultra Low Sulfur
Diesel fuel.
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