1998 GMC Suburban Owner's Manual - Page 394

30,000 Miles (SO 000 km) (Continued) 0 Replace fuel filter. An Emission Control Service. (See footnoteJf.) 0 Vehicles With GVWR Above 8,500 lbs. Only: Inspect shields and underhood insulation for damage orlooseness. Adjust or replace as required. This isCI Noise Emission Control Service. Applicable ou/y to vehicles sold in the United Stutes. 37,500 Miles (62 500 km) 0 Change engine oil and filter (or every I2 months, whichever occurs first). An Emission Control Service. 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 seals for leaking. (See footnote '::'+.) Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) DATE MILEAGE 45,000 Miles (75 000 km) 0 Change engine oil and filter (or every 12 months, whichever occurs first). AI?Emission Control Service. Lubricate chassis components (or every I2 months. whichever OCCLITS first). (See footnote #.) MILEAGE 7-30