GM 2004 Automobile User Manual


 
30,000 Miles (50 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
Replace passenger compartment air filter.
Replace engine air cleaner filter (or every 24 months,
whichever occurs first).
An Emission Control Service.
Inspect fuel tank, cap, cap gasket and lines for
damage or leaks (or every 24 months, whichever
occurs first). Replace parts as needed.
An Emission
Control Service. (See footnote †.)
Rotate tires. See
Tire Inspection and Rotation on
page 5-68
for proper rotation pattern and additional
information.
(See footnote +.)
Drain, flush and refill cooling system (or every
24 months, whichever occurs first). See
Engine
Coolant on page 5-27
for what to use. Inspect hoses.
Clean radiator, condenser, pressure cap and neck.
Pressure test cooling system and pressure cap.
An Emission Control Service. (See footnote †.)
Change manual transaxle fluid every 30,000 miles
(50 000 km) only if your vehicle is used to tow a
trailer.
Check automatic transaxle fluid.
Change transfer case fluid when doing frequent
trailer towing.
Change rear differential fluid when doing frequent
trailer towing.
33,000 Miles (55 000 km)
Change engine oil and filter (or every 3 months,
whichever occurs first).
An Emission Control Service.
36,000 Miles (60 000 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 †.)
6-9