Technical data

Black plate (27,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 10/21/14
Driving and Operating 9-27
higher temperatures experienced
during most of the year. Avoid using
Diesel Type A fuel in warm or hot
climates. Doing so can result in
stalling, poor starting when the
engine is hot, and damage to the
fuel injection system.
Premium Diesel Fuel
If available, premium diesel fuel
(FQP-1A) corresponding to the
Engine Manufacturers Association
(EMA) Recommended Guideline
could provide better starting and
vehicle performance with less noise.
Biodiesel
Biodiesel is a renewable fuel
produced from vegetable oils or
animal fats that have been
chemically modified for normal
engine performance.
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Caution
Do not use home-made biodiesel
or home test kits because the
quality cannot be verified by
approved scientific methods. Do
not use raw vegetable oil or other
unmodified bio-oils, fats,
or blends of vegetable oil with
diesel. They could damage the
fuel system and engine, and
damages would not be covered
by the vehicle warranty.
Biodiesel blends
Biodiesel blends that meet the
CAN/CGSB-3.522 specifications up
to 20% (B20) can be used. Avoid
the use of biodiesel blends above
20%, as they may damage the
engine and fuel system. For detailed
information on the use of biodiesel,
see What Fuel to Use in The U.S.
on page 9-22.
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.
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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. 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.