1997 GMC Suburban Owner's Manual - Page 388

15,000 Miles (25 000 km) (Continued) 22,500 Miles (37 500 km) 0Change engine oil and filter (or every 12 months, whichever occurs first). At2 Enlissiorz Control Service. 0Vehicles With GVWR Above 8,500 lbs. Only: Inspect shields and underhood insulation for damage or looseness. Adjust or replace as required. This is CI Noise Emissiorz Control Service. Applicubleo ~ d y \?chicles s o l d it1 to the UITitecl States. c Lubricate chassis components (or every ) 12 months, whichever occurs first). (See footnote #.) 0Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote ?) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) DATE SERVICED ACTUAL MILEAGE BY 0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) DATE ACTUAL MILEAGE SERVICED B Y 7-32