1995 GMC Sonoma Owner's Manual - Page 316

30,000 Miles (50 000 km) Change engine oil and filter (or cvery 12 months. whichever occurs first). AIIErnI'ssioll Corltrol Sc)r-\licc. 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 (or every 12 months, whichever occurs first). Check readfront axle fluid level and add fluid as needed. Check .,,.!. constant velocity joints and axle seals for leaking.--.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 LISC. Inspect hoses. Clean radiator, condenser. pressure cap and neck. Pressure test the cooling system and pressure cap. A11 E/lri.v.sioll Control Ser1)icc.. 0 Replace spark plugs (except 2.2L Code 4 engine). AI2 E177i.ssiou Co11r1-01 Service. 0 Replace fuel filter. A I IEmi.s.viol1 Co11t1-ol Sor\ic.c>. Co/ltrol 0 Replace air cleaner filter. A I IE~~~i.s.sio~l Sc?n3ic*c. DATE ACTUAL MILEAGE SERVICED BY: 7-28