1998 GMC Safari Owner's Manual - Page 371

Long Tripmighway Maintenance Schedule 75,000 Miles (125 000 km) 0 Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 0 Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.) 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle sealsfor leaking. (See footnote**.) 0 Change automatic transmission fluid and if the vehicle is mainly driven filter under one or more of these conditions: - In heavy city traffic where theoutside 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 underany of these conditions, change the fluid andfilter every 50,000miles (83 000 km). 0 Rotate tires. See "Tire Inspection and Rotation" in the Index proper for rotation pattern and additional information. (See footnote +.) I I I DATE I I I ! 7-37