1998 GMC Safari Owner's Manual - Page 341

Maintenance Schedule Long Trip/Highway Intervals Every 7,500 Miles (12500 km): Engine Oil and Filter Change (or every 12 months, whichever occurs first). Chassis Lubrication (or every months, whichever 12 occurs first). Drive Axle Service. Tire Rotation. Every 15,000 Miles (25 000 km): Automatic Transmission Service (severe conditions only). Every 30,000 Miles (50 000 km): Fuel Filter Replacement. Air Cleaner Filter Replacement. Front at Wheel Bearing Repack (2WD only) (oreach brake relining, whicheveroccurs first). Every 50,000 Miles (83 000 km): Automatic Transmission Service (normal conditions). 1,ong Trip/Highway Intervals Every 60,000 Miles (100 000 km): Engine Accessory Drive Belt Inspection. Fuel Tank, Cap and Lines Inspection. Every 100,000 Miles (166 km): Spark Plug Wire 000 Inspection. Spark Plug Replacement. Positive Crankcase Ventilation (PCV) Valve Inspection. Every 150,000 Miles (240 000 km): Cooling System Service (or every months, whichever occurs first). 60 These intervals only summarize maintenanceservices. Be sure to follow the complete maintenance scheduleon the following pages. 7-7