spark plugs replace GMC SIERRA DENALI 2004 Owners Manual

Additional Required Services (cont'd)
Service25,000
(41 500)50,000
(83 000)75,000
(125 000)100,000
(166 000)125,000
(207 500)150,000
(240 000)
Replace spark plugs and inspect spark
plug wires.
An Emission Control
Service.·
Engine cooling system service
(or every 5 years, whichever occurs
®rst).
An Emission Control Service.
See footnote (i).·
Inspect engine accessory drive belt.
An Emission Control Service.·
6-7

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-Delco Part Number
Oil Filter 25010633 PF44
Engine Air Cleaner/Filter 25313349 A1518C
Spark Plugs 12571164 41±985
Fuel Filter 25121792 GF626
Wiper Blades 15153642 Ð
6-15