Additional Required Services
(Gasoline Engine)
This maintenance section applies to vehicles with a gasoline engine. If your vehicle has a diesel engine, see the
maintenance schedule section in the DURAMAX®Diesel Engine Supplement.
The following services should be performed at the first 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 filter. See
Engine Air Cleaner/Filter on page 5-18.•••
Change automatic transmission fluid and
filter (severe service).See footnote (h).•••
Change automatic transmission fluid
and filter (normal service).•
Replace spark plugs and inspect spark
plug wires.An Emission Control Service.•
6-6
Normal Maintenance Replacement Parts
Replacement parts identified below by name, part number, or specification can be obtained by your GM dealer.
Part GM Part Number ACDelco®Part Number
Engine Air Cleaner/Filter 15153904 A1621C
Engine Oil Filter
4300 V6 25010792 PF47
4800 V8, 5300 V8, 6000 V8 88984215 PF46
Passenger Compartment Air Filter Kit 52485513 CF104
Spark Plugs
4300 V6 89017883 41-932
4800 V8, 5300 V8, 6000 V8 12571164 41-985
Wiper Blades (ITTA Type)
22 inches (56.0 cm)15153642 —
6-15
