1996 Chevrolet Astro Owner's Manual - Page 304

IMaintenance Schedule II 30,000 Miles (50 000 km) 0 Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 0 Lubricate the front suspension,ball joints and king pin bushings, steering linkageand transfer caseshift linkage, parking brake cable guides, and brake pedal springs at every oil change (or every 12 months, whichever occurs first). 0 Check readfront axle fluid level and add fluid as needed. Check constant velocity joints and axle seals for leaking.** For 2-Wheel Drive vehicles only: Clean and repack the front wheel bearings (orat each brake relining, whichever occurs first). 0 Drain, flush and refill cooling system (or every 24 months, whichever occurs first).See "Engine Coolant'' in the Index for what to use. Inspect hoses. Clean radiator, condenser, pressure cap and neck. Pressure test the cooling system and pressure cap. An Emission Control Service. Replace spark plugs. An Emission Control Service. 0 Replace fuel filter. An Emission Control Service. -f0 Replace air cleaner filter. An Emission Control Service. 37,500 Miles (62 500 km) 0 Change engine oil and filter (or every 12 months, whichever occurs first). An Emission Control Service. 0 Lubricate the front suspension,ball joints and king pin bushings, steering linkage and transfer case shiftlinkage, parking brake cable guides, and brake pedal springs at every oil change (or every 12 months, whichever occurs first). (Continued) 7-28