Инструкция для GMC ALL-NEW YUKON DENALI XL (2015)

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GMC Yukon Denali/Yukon XL Denali Owner Manual (GMNA-Localizing-U.S./

Canada/Mexico-7063681) - 2015 - CRC - 6/6/14

Driving and Operating

9-69

higher. Regular unleaded gasoline
rated at 87 octane or higher can be
used, but acceleration and fuel
economy will be reduced, and an
audible knocking noise may be
heard. If this occurs, use a gasoline
rated at 91 octane or higher as soon
as possible. Otherwise, the engine
could be damaged. If heavy
knocking is heard when using
gasoline with a 91 octane rating or
higher, the engine needs service.

Use of Seasonal Fuels

Use summer and winter fuels in the
appropriate season. The fuels
industry automatically modifies the
fuel for the appropriate season.
If fuel is left in the vehicle tank for
long periods of time, driving or
starting could be affected. Drive the
vehicle until the fuel is at one-half
tank or less, then refuel with the
current seasonal fuel.

Prohibited Fuels

Gasolines containing oxygenates
such as ethers and ethanol, as well
as reformulated gasolines, are

available in some cities. If these
gasolines comply with the
previously described specification,
then they are acceptable to use.
However, E85 (85% ethanol) and
other fuels containing more than
15% ethanol must be used only in
FlexFuel vehicles.

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Caution

Do not use fuel containing
methanol. It can corrode metal
parts in the fuel system and also
damage plastic and rubber parts.
That damage would not be
covered under the vehicle
warranty.

Some gasolines, mainly high octane
racing gasolines, can contain an
octane-enhancing additive called
methylcyclopentadienyl manganese
tricarbonyl (MMT). Do not use
gasolines and/or fuel additives with
MMT as they can reduce spark plug
life and affect emission control
system performance. The

malfunction indicator lamp may turn
on. If this occurs, see your dealer
for service.

California Fuel
Requirements

If the vehicle is certified to meet
California Emissions Standards, it is
designed to operate on fuels that
meet California specifications. See
the underhood emission control
label. If this fuel is not available in
states adopting California Emissions
Standards, the vehicle will operate
satisfactorily on fuels meeting
federal specifications, but emission
control system performance might
be affected. The malfunction
indicator lamp could turn on and the
vehicle may not pass a smog-check
test. See

Malfunction Indicator

Lamp on page 5-19

. If this occurs,

return to your authorized dealer for
diagnosis. If it is determined that the
condition is caused by the type of
fuel used, repairs may not be
covered by the vehicle warranty.