2007 Chevrolet Avalanche Owner's Manual - Page 459

Engine Air Cleaner/Filter See Engine Compartment Overview on page 452 for the location of the engine air cleaner/filter and the air filter restriction indicator, if the vehicle has one. On vehicles without an air filter restriction indicator, inspect the air cleaner/filter at the Maintenance II intervals and replace it at the first oil change after each 50,000 mile (83 000 km) interval. See Scheduled Maintenance on page 573 for more information. If you are driving in dusty/dirty conditions, inspect the filter at each engine oil change. How to Inspect the Engine Air Cleaner/Filter Vehicles With an Air Filter Restriction Indicator When to Inspect the Engine Air Cleaner/Filter If your vehicle has an air filter restriction indicator, it lets you know when the engine air cleaner/filter needs to be replaced. On vehicles with a restriction indicator, you should inspect the air filter restriction indicator at every oil change and replace the engine air cleaner/filter when the indicator tells you to. Locate the air filter restriction indicator on the engine air cleaner/filter cover. When the indicator turns black or is in the red/orange "change" zone, replace the filter and reset the indicator. See the steps following to replace the engine air cleaner/filter and to reset the air filter restriction indicator. 459