1997 GMC Sonoma Owner's Manual - Page 360
1997 GMC Sonoma Manual
Page 360 highlights
~ ~ ~_____ Long Tripmighway Maintenance Schedule 90,000 Miles (150 000 km) Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 0Replace fuel filter. An Emission Control Service. (See footnote?.) 0Replace air cleaner filter. An Em.ission Control Service. 0Lubricate chassis components (or every 12 months, whichever occurs first). (See footnote #.) CI Check 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). 0Rotate tires. See "Tire Inspection and Rotation" in the Indexfor proper rotation pattern and additional information. (See footnote +.) DATE ACTUAL MILEAGE SERVICED BY: 7-50