1997 GMC Sonoma Owner's Manual - Page 335

I Short TripKity Maintenance Schedule 63,000 Miles (105 000 km) 0Inspect fuel tank, cap and lines for damage or leaks. Inspect fuel cap gasket for any damage. Replace parts as needed. An Emission Control Service. (See footnote?.) 0Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. Lubricate 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 **.) DATE .~ ACTUAL MILEAGE SERVICED BY: I DATE I ACTUAL MILEAGE ISERVICED BYI 7-25