1995 GMC Sonoma Owner's Manual - Page 311

Maintenance Schedule I 90,000 Miles (150 000 km) 0 Change engine oil and filter (or every 3 months, whichever occurs first). An Emission Control Service. 0 Lubricate the front suspension,ball joints, steering linkage and transfer case shift linkage, parkingbrake cable guides, propshaft splines, universal joints, brake pedal springs, and clutch pedal springs (or every 6 months, whichever occurs first). 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking.** 0 For 2-Wheel Drive vehicles only: Clean and repack the front wheel bearings (or at each brake relining, whichever occurs first). 0 Drain, flush and refill cooling system (or every 24 months, whichever occurs first). See "Engine Coolant" in the Index for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. An Emission Control Service. 0 Replace spark plugs (except 2.2L Code4 engine). An Emission Control Service. 13 Replace fuel filter. An Emission Control Service. 0 Replace air cleanerfilter. Replace filter more often under dusty conditions. An Emission Control Service. 0 Rotate tires. See "Tire Inspection and Rotation" in the Index for proper rotation pattern and additional information. DATEMILEAGE ACTUAL SERVICED BY: 7-23