1997 GMC Sonoma Owner's Manual - Page 323

- Short Trip/City Maintenance Schedule 21,000 Miles (35 000 km) 17 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 24,000 Miles (40 000 km) El Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 17 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 **.) 0Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) DATE ACTUAL MILEAGE SERVICED B Y (Continued)