1996 GMC Savana Van Owner's Manual - Page 309

I Short TripKity Maintenance Schedule -- Gasoline Engines 1 30,000 Miles (50 000 km) 0Change engine oiland filter (or every 3 months, whichever occurs first). An Emissiol~ Control Service. 0If your engine has a 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 u Noise 0Lubricate chassis components; see footnote # (or every 3 months, whichever occurs first). d Etnissiou Coutrol Service. Applicableo ~ to ~ 0Check axle fluidlevel and add fluid whic.les s o l d in the United States. as needed. ** 0Rotate tires. See "Tire Inspection and 0Clean and repack the front wheel bearings (or at Rotation" in the Index for proper rotation pattern and additional information. During each brake relining, whichever occurs first). tire rotation, check brake calipers for 0Replace fuel filter. freedom of movement. Refer to the An Emission Control Service. 3appropriate GM service manual for proper Replace air cleaner filter. caliper service procedures. A n Etnissiorz Control Service. 0Vehicles With GVWR Above8,500 lbs. Only: Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required. This is a Noise Emission Control Service. Applicable only to vehicles sold in the United Stutes. 7-13