1996 GMC Sonoma Owner's Manual - Page 297

Maintenance Schedule ILong TripMighway Definition ---Change (or every 12 months, whichever occurs first). Chassis Lubtication (orevery 12 months, whichever occurs first). Drive Axle Service. At 7,500 Miles (12 500 km) Then Every 15,000 Miles (25 000 km): Tire Rotation. Every 30,000 Miles (50 000 km): Fuel Filter Replacement. Air Cleaner Filter Replacement. Front Wheel Bearing Repack (2WD only) (or at each brake relining, whichever occurs first). Every 50,000 Miles (83 000 km): Automatic Transmission Service (severe conditions only). Every 60,000 Miles (100 000 km): Engine Accessory Drive Belt Inspection. Fuel Tank, Cap and Lines Inspection. Every 100,000 Miles (166 000 km): Cooling System Service (or every 60 months, whichever occurs first). Spark Plug Wire Inspection. Spark Plug Replacement. Positive Crankcase Ventilation (PCV) Valve Inspection. Tlwse ir7tenwl.s o n ! \ * swmwrize ~ncrintencrrzt'e services. Be s 1 1 w tnsjollor.r. cwnpletr rncrinterzunce schedule (111 the tl~e.followiny pcrges. -- 7-5