1997 Chevrolet Astro Owner's Manual - Page 338

I Short 'MplCity Maintenance Schedule I 30,000 Miles (50 000 km) (Continued) - In hilly or mountainous terrain. - When doing frequent trailer towing. - Uses such as foundin taxi, police or delivery service. 33,000 Miles (55 000 km) 0Change engine oil and filter (or every 3 months, whichever occursfirst). An Emission Control Service. 0Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) 0Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle sealsfor leaking. (See footnote* *.) If you do not useyour vehicle under anyo these f conditions, change the fluid and filter every 30,000 miles (50 000 km). I3 Rotate tires. See "Tire Inspection and Rotation" in the Indexfor proper rotation pattern and additional information. (See footnote +.) I DATE ACTUAL MILEAGE SERVICED BY: DATE ACTUAL MILEAGE SERVICED BY: 7-14