1997 GMC Suburban Owner's Manual - Page 364

Short TripKity Maintenance Schedule -- Gasoline Engines 3,000 Miles (5 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 6,000 Miles (10 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 0Lubricate chassis components (or every 3 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 * *.) 0Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) CI Check readfront axle fluidlevel 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 +.) 7-8