2003 GMC Safari Owner's Manual - Page 330

42,000Miles (70 000 km) CII Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. Q Lubricate chassis components (or every 3 months whichever occurs first). (See footnote #.) 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. 0 Rotate tires. See Tire Inspection and Rotation on page 5-64 for proper rotation pattern and additional information. (See footnote +.) 0 Change automatic transmission fluid and filter if the 45,000Miles (75000 km) 0 Change engine oil and filter (or every 3 months, 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. 0 Inspect engine air cleaner filter if you are driving in dusty conditions. Replace filter if necessary. An Emission Control Service. (See footnote t.) If you do not use your vehicle under any of these conditions, change the fluid and filter every 50,000 miles (83 000 km). whichever occurs first). An Emission Control Service. 0 Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) U Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. U For Two-Wheel-Drive vehicles only: Clean and repack the front wheel bearings (or at each brake relining, whichever occursfirst). 6-11