2007 Buick Rainier Owner's Manual - Page 374

Engine Air Cleaner/Filter See Engine Compartment Overview on page 366 for the location of the engine air cleaner/filter. 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. To inspect or replace the engine air cleaner/filter, do the following: 1. Remove the screws on the engine air cleaner/filter and lift off the cover. 2. Remove the air cleaner/filter from the housing. Care should be taken to dislodge as little dirt as possible. 3. Inspect or replace the engine air cleaner/filter. 4. Reinstall the cover and tighten the screws. When to Inspect the Engine Air Cleaner/Filter Inspect the air cleaner/filter at the Maintenance II intervals and replace at the first oil change after each 50,000 mile (83 000 km) interval. See Scheduled Maintenance on page 479 for more information. If you are driving in dusty/dirty conditions, inspect the filter at each engine oil change. 374