1999 GMC Sonoma Owner's Manual - Page 333

yellowblue Short Trip/City Scheduled Maintenance j Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. j Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) j Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote **.) 87,000 Miles (145 000 km) DATE ACTUAL MILEAGE SERVICED BY: j Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. j Lubricate chassis components (or every 3 months, whichever occurs first). (See footnote #.) j Check rear/front axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking. (See footnote **.) j For Two-Wheel-Drive vehicles only: Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first). j Change automatic transmission fluid and filter if the vehicle is mainly driven 90,000 Miles (150 000 km) DATE ACTUAL MILEAGE SERVICED BY: under one or more of these conditions: - In heavy city traffic where the outside temperature regularly reaches 90_F (32_C) or higher. (Continued) 7-25