2005 Chevrolet Astro Owner's Manual - Page 319

Selecting the Right Schedule First you will need to decide which of the two schedules is right for your vehicle. Here is how to decide which schedule to follow: Short Trip/City Intervals Every 3,000 Miles (5 000 km): Engine Oil and Filter Change (or 3 months, whichever occurs first). Chassis Lubrication (or 3 months, whichever occurs first). Every 6,000 Miles (10 000 km): Tire Rotation. Every 15,000 Miles (25 000 km): Engine Air Cleaner Filter Inspection. Front Wheel Bearing Repack (two-wheel drive only) (or at each brake relining, whichever occurs first). Automatic Transmission Service (severe conditions only). Every 30,000 Miles (50 000 km): Fuel Filter Replacement. Every 45,000 Miles (75 000 km): Engine Air Cleaner Filter Replacement. Every 50,000 Miles (83 000 km): Automatic Transmission Service (normal conditions). Transfer Case Fluid Change. Every 100,000 Miles (166 000 km): Spark Plug Wire Inspection. Spark Plug Replacement. Positive Crankcase Ventilation (PCV) Valve Inspection. Short Trip/City Definition Follow the Short Trip/City Scheduled Maintenance if any one of these conditions is true for your vehicle: • Most trips are less than 5 miles (8 km). This is particularly important when outside temperatures are below freezing. • Most trips include extensive idling, such as frequent driving in stop-and-go traffic. • You frequently tow a trailer or use a carrier on top of your vehicle. • If the vehicle is used for delivery service, police, taxi, or other commercial application. One of the reasons you should follow this schedule if you operate your vehicle under any of these conditions is that these conditions cause engine oil to break down sooner. 6-5