[PDF] Simplified Maintenance Schedule - Chevrolet 2015 Chevrolet Silverado Replace passenger compartment air filter (or 2 years, whichever comes first). Replace engine air cleaner filter (or every 4 years, whichever occurs first). Replace spark plugs and inspect spark plug wires. Simplified Maintenance Schedule 6 Duramax Maintenance Schedule & Service Information 6 Duramax Maintenance Schedule Service Intervals, Part Numbers, & Fluid Capacities for all 6 Duramax Engines, 2001 - 2016 Model Years. When purchasing parts for your Duramax, be cautious with model years where an engine was phased in/out as the incoming engine may have parts that are not interchangeable with the outgoing engine.
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