Fuel; Fuel For Diesel Engines - GMC duramax diesel 2016 Supplement Manual

Automatic downshifts will not occur
if the vehicle is in Range Selection
Mode. See Manual Mode in the
owner manual.
The exhaust brake only activates
when the transmission torque
converter is locked. This can vary
based on vehicle speed, gear, and
load. For 8-cylinder pickups, the
exhaust brake will be more active
when in Tow/Haul Mode.

Fuel

Fuel for Diesel Engines

This vehicle is approved to use
diesel fuel with no more than 15
ppm sulfur content and biodiesel up
to 20% by volume. Both diesel and
biodiesel blends must meet all the
requirements as defined in the most
current versions of the local fuel
standards. Please see the
recommended fuels for individual
countries, as described in the
following sections.
Caution
Engine damage may occur and
the damage would not be covered
by the warranty if:
Gasoline is added to the
fuel tank. Gasoline should
never be added to the
fuel tank.
(Continued)
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
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).
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