If the vehicle has a diesel engine, see "Pickup Models" under "Engine Air Cleaner/Filter" in the DURAMAX® Diesel Supplement for the correct inspection and replacement procedures.

See Engine Compartment Overview for the location of 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 (80 000 km) interval. See Scheduled Maintenance for more information. If driving on dusty/dirty conditions, inspect the filter at each engine oil change.

To inspect the air cleaner/filter, remove the engine air cleaner/filter from the vehicle by following Steps 1 through 7. When the engine air cleaner/filter is removed, lightly shake it to release loose dust and dirt. If the engine air cleaner/filter remains caked with dirt, a new filter is required.

Replacing the Engine Air Cleaner/Filter

1. Locate the air cleaner/filter assembly. See Engine Compartment Overview.
2. Loosen the four screws on the cover of the housing and lift up the cover.



3. Remove the engine air cleaner/filter from the housing. Care should be taken to dislodge as little dirt as possible.
4. Clean the engine air cleaner/filter sealing surfaces and the housing.
5. Inspect or replace the engine air cleaner/filter.
6. Reinstall the cover and tighten the screws.

Caution: Operating the engine with the air cleaner/filter off can cause you or others to be burned. The air cleaner not only cleans the air; it helps to stop flames if the engine backfires. If it is not there and the engine backfires, you could be burned. Do not drive with it off, and be careful working on the engine with the air cleaner/filter off.