1997 Chevrolet Astro Owner's Manual - Page 360

II,ongTriplHighway Maintenance Schedule I 52,500 Miles (87 500 km) 0Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 60,000 Miles (100 000 km) 0Change engine oil and filter (or every 12 months, whicheveroccurs first). An Emission Control Service. 0Lubricate chassis components(or every 12 months, whichever occurs first). (See footnote #.) 0Check readfiont axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote**.) 17 Rotate tires. See "Tire Inspection and Rotation" in the Index proper rotation for pattern and additional information. (See footnote +.) 0Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.) Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote * * .) 0For Two-Wheel-Drive vehicles only: Clean and repackthe front wheel bearings (orat each brake relining, whichever occurs first). 0Change automatic transmission fluid and filter if the vehicle is mainly driven under one or more of these conditions: 7-36