2004 Chevrolet Astro Owner's Manual - Page 342
2004 Chevrolet Astro Manual
Page 342 highlights
90,000 Miles (150 000 km) u Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. u Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #). u For Two-Wheel-Drive vehicles only: Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first). u Change automatic transmission 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 every 50,000 miles (83 000 km). u Replace fuel filter. An Emission Control Service. (See footnote †). u Replace engine air cleaner filter. See Engine Air Cleaner/Filter on page 5-20 for more information. An Emission Control Service. u Rotate tires. See Tire Inspection and Rotation on page 5-62 for proper rotation pattern and additional information. (See footnote +). 6-22