2016 GMC YUKON XL oil additives

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
Driving and Operating 257
Fuels in Foreign
Countries
If planning to drive in countries
outside the U.S. or Canada, the
proper fuel might be hard to find.
Check regional auto club or fuel
retail brand websites for availability
in the country where driving. Never
use leaded gasoline, fuel containing
methanol, manganese, or any other
fuel not recommended. Costly
repairs caused by use of improper
fuel would not be covered by the
vehicle warranty.
Fuel Additives
To keep fuel systems clean, TOP
TIER Detergent Gasoline is
recommended. SeeFuel0255.
If TOP TIER Detergent Gasoline is
not available, one bottle of Fuel
System Treatment PLUS added to
the fuel tank at every engine oil
change can help. Fuel System
Treatment PLUS is the only
gasoline additive recommended by
General Motors. It is available at
your dealer. Do not use additives with E85 or
FlexFuel.
E85 or FlexFuel
Vehicles with fuel caps marked as
“E85”
or FlexFuel can use either
unleaded gasoline or ethanol fuel
containing up to 85% ethanol (E85).
All other vehicles should use only
the unleaded gasoline as described
in Fuel 0255.
The use of E85 or FlexFuel is
encouraged when the vehicle is
designed to use it. E85 or FlexFuel
is made from renewable sources.
Many fuel stations will not have an
85% ethanol fuel (E85) pump
available. Those stations that do
have E85 should have a label
indicating the FlexFuel ethanol
content. Do not use the fuel if the
ethanol content is greater than 85%.
The starting characteristics of E85
or FlexFuel make it unsuitable for
use when temperatures fall below
−18 °C (0 °F). Use gasoline or add
gasoline to the E85 or FlexFuel. Because E85 or FlexFuel has less
energy per liter (gallon) than
gasoline, the vehicle will need to be
refilled more often. See
Filling the
Tank 0258.
Caution
Some additives are not
compatible with E85 or FlexFuel
and can harm the vehicle's fuel
system. Do not add anything to
E85 or FlexFuel. Damage caused
by additives would not be covered
by the vehicle warranty.
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.

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
Vehicle Care 281
Caution
Failure to use the recommended
engine oil or equivalent can result
in engine damage not covered by
the vehicle warranty.
Viscosity Grade
Use SAE 0W-20 viscosity grade
engine oil.
When selecting an oil of the
appropriate viscosity grade, it is
recommended to select an oil of the
correct specification. See
“Specification” earlier in this section.
Engine Oil Additives/Engine
Oil Flushes
Do not add anything to the oil. The
recommended oils meeting the
dexos1 specification are all that is
needed for good performance and
engine protection.
Engine oil system flushes are not
recommended and could cause
engine damage not covered by the
vehicle warranty.
What to Do with Used Oil
Used engine oil contains certain
elements that can be unhealthy for
your skin and could even cause
cancer. Do not let used oil stay on
your skin for very long. Clean your
skin and nails with soap and water,
or a good hand cleaner. Wash or
properly dispose of clothing or rags
containing used engine oil. See the
manufacturer's warnings about the
use and disposal of oil products.
Used oil can be a threat to the
environment. If you change your
own oil, be sure to drain all the oil
from the filter before disposal. Never
dispose of oil by putting it in the trash or pouring it on the ground,
into sewers, or into streams or
bodies of water. Recycle it by taking
it to a place that collects used oil.
Engine Oil Life System
When to Change Engine Oil
This vehicle has a computer system
that indicates when to change the
engine oil and filter. This is based
on a combination of factors which
include engine revolutions, engine
temperature, and miles driven.
Based on driving conditions, the
mileage at which an oil change is
indicated can vary considerably. For
the oil life system to work properly,
the system must be reset every time
the oil is changed.
When the system has calculated
that oil life has been diminished, a
CHANGE ENGINE OIL SOON
message comes on to indicate that
an oil change is necessary. See
Engine Oil Messages
0155.
Change the oil as soon as possible
within the next 1 000 km (600 mi).
It is possible that, if driving under
the best conditions, the oil life

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
288 Vehicle Care
Caution
If improper coolant mixture,
inhibitors, or additives are used in
the vehicle cooling system, the
engine could overheat and be
damaged. Too much water in the
mixture can freeze and crack
engine cooling parts. The repairs
would not be covered by the
vehicle warranty. Use only the
proper mixture of engine coolant
for the cooling system. See
Recommended Fluids and
Lubricants0373.
Never dispose of engine coolant by
putting it in the trash, or by pouring
it on the ground, or into sewers,
streams, or bodies of water. Have
the coolant changed by an
authorized service center, familiar
with legal requirements regarding
used coolant disposal. This will help
protect the environment and your
health.
Checking Coolant
The coolant surge tank is in the
engine compartment on the
passenger side of the vehicle. See
Engine Compartment
Overview 0278.
The vehicle must be on a level
surface when checking the coolant
level.
Check to see if coolant is visible in
the coolant surge tank. If the coolant
inside the coolant surge tank is
boiling, wait until it cools down. The
coolant level should be at or above
the FULL COLD mark. If it is not,
there may be a leak in the cooling
system.
If coolant is visible but the coolant
level is not at or above the FULL
COLD mark, see “How to Add
Coolant to the Coolant Surge Tank,”
following.
How to Add Coolant to the
Coolant Surge Tank
{Warning
You can be burned if you spill
coolant on hot engine parts.
Coolant contains ethylene glycol
and it will burn if the engine parts
are hot enough. Do not spill
coolant on a hot engine.

GMC Yukon/Yukon XL Owner Manual (GMNA-Localizing-U.S/Canada-
9159297) - 2016 - CRC - 10/12/15
408 Index
Front Automatic Braking(FAB) System . . . . . . . . . . . . . . . . . 250
Front Axle . . . . . . . . . . . . . . . . . . . . . . 295
Front Fog Lamp Light . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Front Seats Heated and Cooled . . . . . . . . . . . . . 67
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 255 Additives . . . . . . . . . . . . . . . . . . . . . 257
Economy Driving . . . . . . . . . . . . . . . 26
Filling a Portable FuelContainer . . . . . . . . . . . . . . . . . . . 259
Filling the Tank . . . . . . . . . . . . . . . 258
Foreign Countries . . . . . . . . . . . . 257
Gauge . . . . . . . . . . . . . . . . . . . . . . . . 136
Low Fuel Warning Light . . . . . . . 147
Management, Active . . . . . . . . . . 219
Requirements, California . . . . . 256
System Messages . . . . . . . . . . . . 156
Full-Size Spare Tire . . . . . . . . . . . . 344
Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . 304 Engine Compartment FuseBlock . . . . . . . . . . . . . . . . . . . . . . . . 305
Instrument Panel Fuse Block . . . . . . . . . . . . . . . . . . . 308, 311
Rear Compartment Fuse Block . . . . . . . . . . . . . . . . . . . . . . . . 313G
Garage Door Opener . . . . . . . . . . . 171Programming . . . . . . . . . . . . . . . . . 171
Gauges Engine Coolant
Temperature . . . . . . . . . . . . . . . . 138
Engine Oil Pressure . . . . . . . . . . 137
Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Odometer . . . . . . . . . . . . . . . . . . . . . 136
Speedometer . . . . . . . . . . . . . . . . . 136
Tachometer . . . . . . . . . . . . . . . . . . . 136
Trip Odometer . . . . . . . . . . . . . . . . 136
Voltmeter . . . . . . . . . . . . . . . . . . . . . 139
Warning Lights and Indicators . . . . . . . . . . . . . . . . . . . 133
General Information Service and Maintenance . . . . . 363
Towing . . . . . . . . . . . . . . . . . . . . . . . . 260
Vehicle Care . . . . . . . . . . . . . . . . . . 275
Glass Replacement . . . . . . . . . . . . . 300
Glove Box . . . . . . . . . . . . . . . . . . . . . . 119
GM Mobility Reimbursement Program . . . . . . . . . . . . . . . . . . . . . . . 383
H
Halogen Bulbs . . . . . . . . . . . . . . . . . . 301
Hazard Warning Flashers . . . . . . . 178
Head Restraints . . . . . . . . . . . . . . . . . 62
Headlamps . . . . . . . . . . . . . . . . . . . . . 301Aiming . . . . . . . . . . . . . . . . . . . . . . . . 300
Automatic . . . . . . . . . . . . . . . . . . . . . 177
Bulb Replacement . . . . . . . . . . . . 301
Daytime RunningLamps (DRL) . . . . . . . . . . . . . . . . 176
Flash-to-Pass . . . . . . . . . . . . . . . . . 176
High Intensity Discharge (HID) Lighting . . . . . . . . . . . . . . . 301
High-Beam On Light . . . . . . . . . . 148
High/Low Beam Changer . . . . . 176
Lamps On Reminder . . . . . . . . . 148
Heated Rear Seats . . . . . . . . . . . . . . . . . . . . . 68
Steering Wheel . . . . . . . . . . . . . . . 125
Heated and Cooled Front Seats . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Heated Mirrors . . . . . . . . . . . . . . . . . . . 54
Heater Engine . . . . . . . . . . . . . . . . . . . . . . . . 215
High-Beam On Light . . . . . . . . . . . . 148
High-Speed Operation . . . . . . . . . . 322
Hill and Mountain Roads . . . . . . . . 202
Hill Start Assist (HSA) . . . . . . . . . . 232