Buick LaCrosse: When to Inspect the Engine Air 
Cleaner/Filter - Engine Air Cleaner/Filter - Vehicle Checks - Vehicle Care - Buick LaCrosse Owners ManualBuick LaCrosse: When to Inspect the Engine Air Cleaner/Filter

Inspect the air cleaner/filter at the scheduled maintenance intervals and replace it at the first oil change after each 80 000 km (50,000 mi) interval. See Maintenance Schedule for more information.

If you are driving in dusty/dirty conditions, inspect the filter at each engine oil change.

    Engine Air Cleaner/Filter
    The engine air cleaner/filter is located in the engine compartment on the driver side of the vehicle. See Engine Compartment Overview for more information on location. ...

    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 covered with dirt, a new filter is re ...

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