The Chevrolet Silverado 1500 uses 0W-20 or 5W-30 full synthetic oil (engine-dependent) changed every 7,500-10,000 miles. Key services include transmission fluid at 45,000 miles, differential fluid at 45,000 miles, and iridium spark plugs at 100,000 miles. Average annual cost: $600-$950, rising past year 9 due to AFM lifter risk on 5.3L V8s.
See the full Silverado 1500 maintenance cost by year breakdown.