1996 GMC Sonoma Owner's Manual - Page 320

Short TripKity Maintenance Schedule 90,000 Miles (150 000 km) 0Change engine oil and filter (or every 3 months, whichever occurs first). An Etnissioj7 Control Service. 0For TjNo-Wheel-Drive 7Jehicles onljJ : Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first). 0Replace fuel filter. A n Emissiorz Control Service. An Emissiorz Control Service. [7 Lubricate the front suspension, ball joints, steering linkage and transfer case shift linkage, parking brake cable guides, propshaft splines, universal joints, brake pedal springs and clutch pedal springs at every oil change (or every 3 months, whichever occurs first). 0Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking."'* 3- 0Replace air cleaner filter. 0Rotate tires. See "Tire Inspection and Rotation'' in the Index for proper rotation pattern and additional information. 7-28