1997 GMC Sonoma Owner's Manual - Page 342

I Short TripKity Maintenance Schedule I 90,000 Miles (150 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 87,000 Miles (145 000 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 #.) 0Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote **.) 0For Two-Wheel-Drive vehicles only: Clean and repack thefront wheel bearings (or at each brake relining, whichever occurs first). DATE ACTUAL MILEAGE SERVICED BY: 7-32