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Chevrolet Low Cab Forward Owner Manual (GMNA-Localizing-U.S.-
10399647) - 2016 - crc - 5/25/16
224
Driving and Operating
Driver Assistance
Systems
Speed Limiter (Gasoline
Vehicle)
Speed limiting restricts the vehicle's
speed by controlling the fuel
injection volume. It prevents the
speed from exceeding 105 km/h
(65 mph) regardless of the pressure
on the accelerator pedal.
Speed limiting does not control
braking, so it is possible for the
vehicle to exceed the set speed on
downhill slopes. If the tire size is
changed, the speed limiting may not
work normally. Be sure to use the
correct tire size specified for your
vehicle.
See
or
Fuel
Regular unleaded gasoline with a
posted octane rating of 87 or higher
should be used. It should meet
ASTMD4814 in the U.S. and CGSB
3.5-M87 in Canada. These fuels
should contain the proper additives
and in most cases nothing should
have to be added to the fuel. Pumps
in the U.S. and Canada will be
labeled UNLEADED. Only unleaded
nozzles will fit into this vehicle's
filler neck.
Gasoline with a posted octane
rating of less than 87 should not be
used in this vehicle. Using such
gasoline may cause a heavy
knocking noise when driving, which
can result in damage to the engine.
It is normal to hear a slight pinging
noise while accelerating or driving
up a hill. However, if a constant
knocking noise is heard while using
fuel rated at 87 octane or higher, the
engine should be serviced.
Some gasolines contain an octane
enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). It is not
recommended to use gasoline
containing MMT. Some gasolines
contain an additive called methyl
tertiary butyl ether (MTBE).
Gasoline containing more than 15%
MTBE should not be used in this
vehicle.
Gasoline containing ethanol or
methanol may be available in your
area. Ethanol is ethyl or grain
alcohol. Methanol is methyl or wood
alcohol.
Fuels containing more than 5%
methanol or more than 10% ethanol,
such as E15 or E85, should not be
used in this vehicle. These fuels can
corrode metal parts in the fuel
system. They can also damage
plastic and rubber parts. This
damage would not be covered
under your warranty.
Fuels containing 5% methanol or
less must contain cosolvents and
corrosion prevention additives to
avoid damage to the fuel system.