2003 GMC Safari Owner's Manual - Page 339

22,500 Miles (37500 km) 0 Change engine oil and filter (or every 12 months, 0 Change automatic transmission fluid and filter if the whichever occurs first). An Emission Control Service. CI Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #). 0 Check readfront axle fluid level and add fluid as needed. Checkconstant 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 +). vehicle is mainly driven under one or more these of conditions: - In heavy city traffic wherethe outside temperature regularly reaches90°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 under anyof these conditions, change the fluid and filter every 50,000 miles (83 000 km). 0 Rotate tires. See Tire Inspection and Rotation on page 5-64 for proper rotation pattern and additional information.(See footnote +). U Replace fuel filter. An Emission Control Service. (See footnote t). 0 Replace engine air cleaner filter. An Emission Control Service. 30,000Miles (50 000 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. Checkconstant velocity joints and axle seals for leaking. 0 For Two-Wheel-Drive vehicles only: Clean and repack the front wheel bearings (or at eachbrake relining, whichever occurs first). 6-20