spark plugs CADILLAC DEVILLE 2005 8.G Owners Manual

Additives
To provide cleaner air, all gasolines in the United States
are now required to contain additives that will help
prevent engine and fuel system deposits from forming,
allowing your emission control system to work properly.
In most cases, you should not have to add anything to
your fuel. However, some gasolines contain only the
minimum amount of additive required to meet U.S.
Environmental Protection Agency regulations. General
Motors recommends that you buy gasolines that are
advertised to help keep fuel injectors and intake valves
clean. If your vehicle experiences problems due to dirty
injectors or valves, try a different brand of gasoline.
Also, your GM dealer has additives that will help correct
and prevent most deposit-related problems.
Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines may be available in
your area to contribute to clean air. General Motors
recommends that you use these gasolines, particularly if
they comply with the specications described earlier.
Notice:Your vehicle was not designed for fuel that
contains methanol. Do not use fuel containing
methanol. It can corrode metal parts in your fuel
system and also damage the plastic and rubber
parts. That damage would not be covered under
your warranty.Some gasolines that are not reformulated for low
emissions may contain an octane-enhancing additive
called methylcyclopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy gasoline
whether the fuel contains MMT. General Motors does
not recommend the use of such gasolines. Fuels
containing MMT can reduce the life of spark plugs and
the performance of the emission control system may
be affected. The malfunction indicator lamp may turn on.
If this occurs, return to your authorized GM dealer for
service.
Fuels in Foreign Countries
If you plan on driving in another country outside the
United States or Canada, the proper fuel may be hard
to nd. Never use leaded gasoline or any other fuel
not recommended in the previous text on fuel. Costly
repairs caused by use of improper fuel would not
be covered by your warranty.
To check the fuel availability, ask an auto club, or
contact a major oil company that does business in the
country where you will be driving.
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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
(41 500)50,000
(83 000)75,000
(125 000)100,000
(166 000)125,000
(207 500)150,000
(240 000)
Inspect fuel system for damage or leaks.••••••
Inspect exhaust system for loose or
damaged components.••••••
Replace engine air cleaner lter. See
Engine Air Cleaner/Filter on page 5-19.•• •
Throttle body service.An Emission
Control Service. See footnotes † and (l).••••••
Replace seat cushion lter (or every two
years, whichever occurs rst).••••••
Replace seatback lter (or every ve
years, whichever occurs rst).•• •
Change automatic transaxle uid and
lter (severe service only).See
footnote (h).•• •
Replace spark plugs.An Emission
Control Service.•
Except Professional Vehicle: Engine
cooling system service (or every ve years,
whichever occurs rst).An Emission
Control Service. See footnote (i).•
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Normal Maintenance Replacement Parts
Replacement parts identied below by name, part number, or specication can be obtained from your dealer.
Part GM Part Number ACDelco®Part Number
Engine Air Cleaner/Filter Element 25099149 A1208C
Engine Oil Filter 89017342 PF61
Passenger Compartment Air Filter Element 25689297 —
Spark Plugs 12571535 41–987
Wiper Blade (Shepherd’s Hook Type)
22 inches (56.5 cm)12494780 —
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