1996 GMC Savana Van Owner's Manual - Page 328

Long TripJHighway Maintenance Schedule -- Gasoline Engines 15,000 Miles (25 000 km) (Continued) 22,500 Miles (37 500 km) Change engine oil and filter (or every 12 months, whichever occurs first). An Et~~issior? Co11tr-d Service. 0If your engine hasa thermostatically controlled cooling fan, inspect all hoses and ducts for proper hook-up(or every 12 months, whichever occurs first).Be sure the valve works properly. This is LZ Noise ~ Euzissioll Control Service. ApplicclDle o r z l t o vehic.1e.s sold in the United Stcrtes. 0Lubricate chassis components; see footnote # (or every 12 months, whichever occurs first). 0Check axle fluid level and add fluid as needed. 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. During tire rotation, check brake calipers for freedom of movement. Refer to the appropriate GM service manual for proper caliper service procedures. I DATE I ACTUAL MILEAGE ISERVICED B Y I 7-32