1995 GMC Safari Owner's Manual - Page 278

I Schedule Follow Maintenance Schedule I if any one of these is true for your vehicle: Most trips are less than 5 to 10 miles (8 to 16 km). This is particularly important when outside temperatures are below freezing. 0 I Most trips include extensive idling (such as frequent driving in stop and go traffic). Most trips are through dusty areas. You frequently tow a trailer or use a camer on top of your vehicle. 0 for Schedule I should also be followed if the vehicle is used delivery service, police, taxi, or other commercial application. I Schedule Every 3,000 Miles (5 000 km) or 3 Months Engine Oil and Filter Change Chassis Lubrication Drive Axle Service I At 6,000 Miles (10 OOO km) - Then Every 12,000 Miles (25 OOO km) Tire Rotation Every 15,000 Miles (25 000 km) Air Cleaner Filter Inspection, if driving in dusty conditions Front Wheel Bearing Repack (2WD Only) Every 30,000 Miles (50 000 km) Air Cleaner Filter Replacement Spark Plug Replacement Fuel Filter Replacement Cooling System Service (or every 24 months) Every 50,000 Miles (83 000 km) Automatic Transmission Service (severe conditions) 1-4