GM 2004 Automobile User Manual


 
15,000 Miles (25 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
Replace passenger compartment air filter.
Change transfer case fluid when doing frequent
trailer towing.
Change rear differential fluid when doing frequent
trailer towing.
18,000 Miles (30 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
Rotate tires. See
Tire Inspection and Rotation
on page 5-68
for proper rotation pattern and
additional information.
(See footnote +.)
Inspect engine air cleaner filter if you are driving in
dusty conditions. Replace filter if necessary.
An
Emission Control Service. (See footnote †.)
21,000 Miles (35 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
24,000 Miles (40 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
Rotate tires. See
Tire Inspection and Rotation
on page 5-68
for proper rotation pattern and
additional information.
(See footnote +.)
Inspect engine air cleaner filter if you are driving in
dusty conditions. Replace filter if necessary.
An
Emission Control Service. (See footnote †.)
27,000 Miles (45 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
6-8