1998 GMC Sonoma Owner's Manual - Page 340

I Short TripKity Maintenance Schedule 1 48,000 M l s (80 000 km) (Continued) ie C Check readfront axle fluidlevel and add fluid as needed. Check constant I velocity joints and axle seals forleaking. (See footnote**.) 0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. (See footnote +.) 50,000 Miles (83 000 km) 0 If you haven't used your vehicle under severe service conditions listed previously and, therefore, haven't changed your automatic transmission fluid, change both the fluid and filter. Manual transmission fluid doesn't require change. DATE I ACTUAL MILEAGE I SERVICEDBY: I I I 51,000 Miles (85 000 km) Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 0 Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote#.) 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals forleaking. (See footnote**.) DATE MILEAGE 54,000 Miles (90 000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. MILEAGE 7-18