spark plugs replace CADILLAC STS 2009 1.G Owners Manual

Additional Required Services (cont’d)
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)
All-wheel-drive vehicles: Change
transfer case uid (normal service).
See footnote (q).•
Replace spark plugs.An Emission
Control Service.•
Engine cooling system service (or every
ve years, whichever occurs rst).
An Emission Control Service.
See footnote (j).•
4.4L Supercharged Engine: Intercooler
system service (or every ve years,
whichever occurs rst).See footnote (l).•
Inspect engine accessory drive belt.
An Emission Control Service.
See footnote (n).•
If using DOT-4 brake uid, change brake
uid at a regular maintenance service
every two years.See footnote (i).
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Maintenance Replacement Parts
Replacement parts identied below by name, part number, or specication can be obtained from your dealer/retailer.
Part GM Part Number ACDelco Part Number
Engine Air Cleaner/Filter Element
3.6L and 4.6L Engines 25798271 A2944C
4.4L (V-Series) Engine 15813300 A3078C
Engine Oil Filter
3.6L Engine 25177917 PF2129
4.4L (V-Series) Engine 89017527
1PF261
4.6L Engine 89017342 PF61
Passenger Compartment Air Filter 88957450 CF13C
Spark Plugs
3.6L Engine 92220447 41-990
4.4L (V-Series) Engine 12592619 41-991
4.6L Engine 12571535 41-987
Wiper Blades
Driver Side – 22 in (56.5 cm) 88958361 —
Passenger Side – 21 in (53.0 cm) 88958359 —
1Notice: If the vehicle is an STS-V model, the engine uses a special oil lter. The use of any other engine
oil lter could lead to lter failure and result in severe engine damage. Damage caused by use of the
wrong engine oil lter would not be covered by the vehicle warranty.
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