2008 CHEVROLET IMPALA spark plugs

Additives
To provide cleaner air, all gasolines in the United States
are now required to contain additives that help prevent
engine and fuel system deposits from forming, allowing
the emission control system to work properly. In most
cases, you should not have to add anything to the fuel.
However, some gasolines contain only the minimum
amount of additive required to meet U.S. Environmental
Protection Agency regulations. To help keep fuel
injectors and intake valves clean, or if your vehicle
experiences problems due to dirty injectors or valves,
look for gasoline that is advertised as TOP TIER
Detergent Gasoline. Also, your dealer/retailer has
additives that will help correct and prevent most
deposit-related problems.
Gasolines containing oxygenates, such as ethers and
ethanol, and reformulated gasolines might be available
in your area. We recommend that you use these
gasolines, if they comply with the specications
described earlier. However, E85 (85% ethanol) and
other fuels containing more than 10% ethanol must
not be used in vehicles that were not designed for
those fuels.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.
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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
(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.••••••
Replace engine air cleaner lter. See
Engine Air Cleaner/Filter on page 5-22.•• •
Change automatic transmission uid and
lter (severe service).See footnote (h).•• •
Change automatic transmission uid and
lter (normal service).•
Replace spark plugs and inspect spark
plug wires.An Emission Control Service.•
Engine cooling system service (or every
ve years, whichever occurs rst).
An Emission Control Service.
See footnote (i).•
Inspect engine accessory drive belt.
An Emission Control Service.
See footnote (n).•
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Normal Maintenance Replacement Parts
Replacement parts identied below by name, part number, or specication can be obtained from your dealer/retailer.
Normal Maintenance Replacement Parts
Part GM Part NumberAC Delco
Part Number
Engine Air Cleaner/Filter 10350737 A2962C
Engine Oil Filter
3.5L V6, 3.5L V6 Flexible Fuel and 3.9L V6 Flexible Fuel
Engines89017342 PF61
5.3L V8 Engine 89017524 PF48
Passenger Compartment Air Filter 15284938 CF132
Spark Plugs
3.5L V6, 3.5LV6 Flexible Fuel and 3.9L V6 Flexible Fuel
Engines12591131 41-100
5.3L V8 Engine 12571164 41-985
Windshield Wiper Blades
Driver’s – 22 inches (55.0 cm) 15941731 —
Passenger’s-Driver’s – 22 inches (55.0 cm) 15941732 —
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