spark plugs GMC YUKON XL 2008 Owners Manual

Notice:Your vehicle was not designed for fuel that
contains methanol. 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 your
warranty.
Some gasolines that are not reformulated for low
emissions can contain an octane-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains MMT. We recommend against
the use of such gasolines. Fuels containing MMT can
reduce the life of spark plugs and the performance of the
emission control system could be affected. The
malfunction indicator lamp might turn on. If this occurs,
return to your dealer/retailer for service.Fuel E85 (85% Ethanol)
The 8th digit of the Vehicle Identication Number (VIN)
shows the code letter or number that identies your
vehicle’s engine. The VIN is at the top left of the
instrument panel. SeeVehicle Identification Number
(VIN) on page 5-116.
If your vehicle has the 5.3L V8 engine (Code 0) or the
5.3L V8 engine (Code 3), you can use either regular
unleaded gasoline or ethanol fuel containing up to
85% ethanol (E85); also seeFuel on page 5-5.Inall
other engines, use only the unleaded gasoline described
underGasoline Octane on page 5-5.
Only vehicles that have the 5.3L V8 engine (Code 0) or
the 5.3L V8 engine (Code 3) can use 85% ethanol
fuel (E85). We encourage the use of E85 in vehicles that
are designed to use it. The ethanol in E85 is a
“renewable” fuel, meaning it is made from renewable
sources such as corn and other crops.
Many service stations will not have an 85% ethanol fuel
(E85) pump available. The U. S. Department of
Energy has an alternative fuels website
(www.eere.energy.gov/afdc/infrastructure/locator.html)
that can help you nd E85 fuel. Those stations that
do have E85 should have a label indicating ethanol
content. Do not use the fuel if the ethanol content
is greater than 85%.
5-7

Additional Required Services
The following services should be performed at the rst maintenance service (IorII) after the indicated miles
(kilometers) shown for each item.
Additional Required Services
Service and Miles (Kilometers)25,000
(40 000)50,000
(80 000)75,000
(120 000)100,000
(160 000)125,000
(200 000)150,000
(240 000)
Inspect fuel system for damage or leaks.• •••••
Inspect exhaust system for loose or
damaged components.• •••••
Vehicles without a lter restriction
indicator: Replace engine air cleaner
lter. SeeEngine Air Cleaner/Filter on
page 5-19.•••
Change automatic transmission uid and
lter (severe service).See footnote (h).•••
Change automatic transmission uid and
lter (normal service).•
Four-wheel drive: Change transfer case
uid.See footnote (g).•••
Inspect evaporative control system.An
Emission Control Service. See footnotes
† and (k).•••
Replace spark plugs and inspect spark
plug wires.An Emission Control Service.•
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Maintenance Replacement Parts
Replacement parts identied below by name, part number, or specication can be obtained from your dealer/retailer.
Maintenance Replacement Parts
Part GM Part NumberACDelco®Part
Number
Engine Air Cleaner /Filter
High Capacity Filter 15908915 A3085C
Standard Filter 15908916 A3086C*
Oil Filter 89017524 PF48
Spark Plugs 12571164 41-985
Wiper Blades
Front – 21.6 inches (55.0 cm) 15930910 —
Rear – 11.8 inches (30.0 cm) 15173728 —
*A3085C high-capacity air cleaner lter may be substituted.
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