Buick 2010 Lacrosse - Manual (Page 298)

9-16 Vehicle Care
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:
2.4 L L4 Engine
1. Remove the screws on top of
the engine air cleaner/filter
housing.
2. Lift the filter cover housing away
from the engine.
3. Pull out the filter.
4. Inspect or replace the engine air
cleaner/filter.
5. Lower the filter cover housing
toward the engine.
6. Install the screws to the top of
the housing to lock the cover in
place.