1998 GMC Savana Van Owner's Manual - Page 342

Long Tripmighway Maintenance Schedule -- Gasoline Engines 30,000 Miles (50 000 km) (Continued) 0 Replace fuel filter. An Emission Control Service. (See footnote?.) 0 Replace air cleaner filter. An Emission Control Service,. U Vehicles With GVWR Above 8,500 Ibs. Only: Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required. This is a Noise Emission Control Service. Applicableonly to vehiclessold in the United States. I 37,500 Miles (62 500 km) 0 Change engineoil 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 axle fluid level and add fluid as needed. (See footnote ** .) 0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) I DATE SERVICED BY: I 7-30