2005 Chevrolet Impala Owner's Manual - Page 268
2005 Chevrolet Impala Manual
Page 268 highlights
When to Inspect the Engine Air Cleaner/Filter 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 6-4 for more information. If you are driving in dusty/dirty conditions, inspect the filter at each engine oil change. To inspect or replace the engine air cleaner/filter do the following: How to Inspect the Engine Air Cleaner/Filter To inspect the air cleaner/filter, remove the filter from the vehicle and lightly shake the filter to release loose dust and dirt. If the filter remains caked with dirt, a new filter is required. 1. Lift the filter cover tabs on top of the engine air cleaner/filter housing. 2. Push the filter cover housing toward the engine. 3. Pull out the filter. 4. Inspect or replace the engine air cleaner/filter. 5. To reinstall the cover, position the tabs through the hinges on the housing. 6. Push the cover tabs on top of the housing to lock the cover in place. 5-22