General Information 00 M2 Maintenance Interval Operations: 00–05 Maintenance Operation Number M2 Maintenance Interval Operations for Service Schedule IV Schedule IV: every 100,000 miles (161 000 km) Check 83–02 Air Filter Replacement * * Replace the HVAC filters every 6 months regardless of mileage, more often if the vehicle is operated under extreme conditions. Table 9, M2 Maintenance Interval Operations for Service Schedule IV 122SD and Coronado 132 Maintenance Manual, February 2016 00/13