2004 CADILLAC XLR spark plugs

California Fuel
If your vehicle is certi®ed to meet California Emission
Standards (see the underhood emission control label), it
is designed to operate on fuels that meet California
speci®cations. If this fuel is not available in states
adopting California emissions standards, your vehicle
will operate satisfactorily on fuels meeting federal
speci®cations, but emission control system performance
may be affected. The malfunction indicator lamp may
turn on (see
Malfunction Indicator Lamp on page 3-48)
and your vehicle may fail a smog-check test. If this
occurs, return to your authorized GM dealer for
diagnosis. If it is determined that the condition is caused
by the type of fuel used, repairs may not be covered
by your warranty.
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. 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 intakevalves clean. If your vehicle experiences problems due
to dirty injectors or valves, try a different brand of
gasoline.
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 speci®cations 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.
5-6

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 5-18.An Emission Control Service.······
Change automatic transmission ¯uid
and ®lter (severe service).
See
footnote (f).···
Change automatic transmission ¯uid
and ®lter (normal service).·
Replace spark plugs.
An Emission
Control Service.·
Engine cooling system service (or every
5 years, whichever occurs ®rst).
An
Emission Control Service. See
footnote (g).·
Inspect engine accessory drive belt.
An
Emission Control Service.·
6-6

Normal Maintenance Replacement Parts
Replacement parts identi®ed below by name, part number, or speci®cation can be obtained from your dealer.
Part GM Part Number AC DelcožPart Number
Engine Air Cleaner/Filter Element 10318557 A2061C
Engine Oil Filter 89017342 PF61
Passenger Compartment Air Filter Element 10345066 Ð
Spark Plugs 12571535 41±986
Windshield Wiper Blade
(Shepherd's Hook Type) 500 mm12367281 Ð
Engine Drive Belt Routing
6-13