2014 Chevrolet Silverado 1500 Extended Cab Owner Manual - Page 478

11-4 Service and Maintenance Passenger Compartment Air Filter The passenger compartment air filter removes dust, pollen, and other airborne irritants from outside air that is pulled into the vehicle. The filter should be replaced as part of routine scheduled maintenance. Inspect the passenger compartment air filter every 36 000 km/ 22,500 miles or two years, whichever comes first. Replace if necessary. More frequent replacement may be needed if the vehicle is driven in areas with heavy traffic, areas with poor air quality, or areas with high dust levels. Replacement may also be needed if there is a reduction in air flow, excessive window fogging, or odors. Engine Oil Change When the CHANGE ENGINE OIL SOON message displays, have the engine oil and filter changed within the next 1 000 km/600 mi. If driven under the best conditions, the engine oil life system might not indicate the need for vehicle service for more than a year. The engine oil and filter must be changed at least once a year and the oil life system must be reset. Your trained dealer technician can perform this work. If the engine oil life system is reset accidentally, service the vehicle within 5 000 km/3,000 mi since the last service. Reset the oil life system when the oil is changed. See Engine Oil Life System on page 10-14. Tire Rotation and Required Services Every 12 000 km/ 7,500 mi Rotate the tires, if recommended for the vehicle, and perform the following services. See Tire Rotation on page 10-71. . Check engine oil level and oil life percentage. If needed, change engine oil and filter, and reset oil life system. See Engine Oil on page 10-11 and Engine Oil Life System on page 10-14. Check engine coolant level. See Engine Coolant on page 10-21. Check windshield washer fluid level. See Washer Fluid on page 10-28. . .