Black plate (27,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 6/5/14
Driving and Operating
9-27
and fuel system. For detailed
information on the use of biodiesel,
see
What Fuel to Use in The U.S.
on page 9-21
.
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
Filling the
Tank on page 9-36
.
{
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.
What Fuel to Use in Mexico
Use diesel fuel specification
NOM-086 Pemex UBA, which meets
the Ultra Low Sulfur Diesel fuel
requirement of 15 ppm sulfur
maximum. This fuel is not available
in all regions of Mexico.
{
Caution
Use of diesel fuel other than Ultra
Low Sulfur Diesel (15 ppm sulfur
maximum) will damage the
exhaust after-treatment system.
This damage would not be
covered by the vehicle warranty.
Cold Weather Operation
In cold weather, the fuel filter may
become clogged by wax naturally
present in the fuel. To unclog it,
move the vehicle to a warm garage
area and allow the filter to warm up.
The fuel filter may need to be
replaced. See
Fuel Filter
Replacement on page 9-33
.
At temperatures below 0°C (32°F), it
is recommended to avoid using
biodiesel blends above (5% blend)
which may cause fuel filter plugging,
system gelling, and freezing that
may affect vehicle starting.
