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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 (I or II) 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 304.
•••
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.
•
Engine cooling system service
(or every five years, whichever occurs
first). An Emission Control Service.
See footnote (i).
•
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