1995 GMC Sonoma Owner's Manual - Page 293

Every 50,000 Miles 000 km) (83 Automatic Transmission Service (severe conditions) Every 60,000 Miles (100 000 km) Engine Accessory Drive Belt Inspection Spark Plug Wire Inspection Engine Timing Check Fuel Tank, Cap and Lines Inspection Every 100,000 Miles (166 000 km) Spark Plug Replacement (2.2L Code 4 engine Only) Follow Schedule I1 o i ? / ~ . none of the conditions from Schedule I is true. if Every 7,500 Miles(12 500 km) Engine Oil and Filter Change (or every 12 months) Chassis Lubrication (or every I2 months) Drive Axle Service At 7,500 Miles (12500 km) - Then Every 15,000 Miles (25 000 km) Tire Rotation Every 30,000 Miles (50 000 km) Cooling System Service (or every 24 months) Spark Plug Replacement (Except 2.2L Code 4 engine) Fuel Filter Replacement Air Cleaner Filter Replacement Front Wheel Bearing Repack (2-Wheel Drive Only) Every 50,000 Miles 000 km) (83 Automatic Transmission Service (severe conditions)