Technical data

Black plate (22,1)
Chevrolet/GMC Duramax Diesel Supplement (GMNA Localizing-U.S./Canada-
7132827) - 2015 - CRC - 10/21/14
9-22 Driving and Operating
Caution (Continued)
.
Diesel fuel has been mixed
with engine oil, vegetable oil,
or automatic transmission
fluid.
.
Marine diesel fuel; fuel oils;
diesel fuels that are entirely
or partially plant based, such
as rape seed oil or bio-diesel;
Aquazole
®
; or similar
diesel-water emulsions
are used.
.
Diesel fuel or fuel additives
that are not recommended
are used.
.
Aftermarket diesel fuel
additives, particularly those
that contain alcohol or water
emulsifiers, are used. Consult
your dealer before using a
fuel additive.
Some conditions, such as dirty fuel,
may decrease fuel filter life and a
CHANGE FUEL FILTER message
may come on in the Driver
Information Center (DIC).
What Fuel to Use in
The U.S.
Use only diesel fuel with ultra low
sulfur content (15 ppm, maximum).
Look for dispensers with this label.
Use diesel fuel that meets ASTM
specification D 975, Grades No. 2-D
or No. 1-D S15, also known as Ultra
Low Sulfur Diesel. Contact a fuel
suppler for any questions.
{
Caution
Use of diesel fuel other than Ultra
Low Sulfur Diesel (15 ppm sulfur
maximum) will cause damage to
the exhaust after-treatment
system. This damage would not
be covered by the vehicle
warranty. Do not use marine,
locomotive, or boiler distillate fuel
since it may contain higher sulfur
levels.
Diesel Fuel Grades
For best results use No. 2-D diesel
fuel year-round because it is
blended for seasonal temperature
differences, both above and below
freezing conditions. No. 1-D diesel
fuel can be used in very cold
temperatures (below -18 °C or 0 °F);