1998 Chevrolet Blazer Owner's Manual - Page 365

Long TrlpEIighway Maintenance Schedule 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 andfilter every 50,000miles (83 000 km). 17 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) - 22,500 Miles (37 500 km) 0 Change engine oil and filter (orevery 12 months, whicheveroccurs first). An Emission Control Service. 0 Lubricate chassis components (or every 12 months, whicheveroccurs first). (See footnote #.) 0 Check readfront axlefluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote **.) Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) I DATE I 30,000 Miles (50 000 km) Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. (Continued) c 7-29