Pontiac 2003 Montana Owner's Manual page 417

22,500 Miles (37 500 km)
Rotate tires. See Tire Inspection and Rotation on
page 5-58 for proper rotation pattern and additional
information. (See footnote +.)
30,000 Miles (50 000 km)
Replace passenger compartment air filter. If you
drive regularly under dusty conditions, the filter
may require replacement more often.
Rotate tires. See Tire Inspection and Rotation on
page 5-58 for proper rotation pattern and additional
information. (See footnote +.)
Replace engine air cleaner filter. See Engine Air
Cleaner/Filter on page 5-18 for more information.
An Emission Control Service.
37,500 Miles (62 500 km)
Rotate tires. See Tire Inspection and Rotation on
page 5-58 for proper rotation pattern and additional
information. (See footnote +.)
45,000 Miles (75 000 km)
Inspect engine air cleaner filter. If necessary, replace
the filter. If vehicle is driven in dusty/dirty conditions,
inspect filter at every engine oil change. See
Engine Air Cleaner/Filter on page 5-18 for more
information. An Emission Control Service. (See
footnote †.)
Replace passenger compartment air filter. If you
drive regularly under dusty conditions, the filter
may require replacement more often.
Rotate tires. See Tire Inspection and Rotation on
page 5-58 for proper rotation pattern and additional
information. (See footnote +.)
50,000 Miles (83 000 km)
Change automatic transaxle fluid and filter if the
vehicle is mainly driven under one or more of
these conditions:
− In heavy city traffic where the outside
temperature regularly reaches 90°F (32°C)
or higher.
− In hilly or mountainous terrain.
− When doing frequent trailer towing.
− Uses such as found in taxi, police or delivery
service.
If you do not use your vehicle under any of these
conditions, change the fluid and filter at 100,000 miles
(166 000 km).
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