Buick 2011 Lacrosse - Manual (Page 249)

Black plate (9,1) Buick LaCrosse Owner Manual - 2011
Climate Controls 8-9
5. Pull the three tabs to release
and open the filter door.
6. Remove the old air filter.
7. Install the new air filter.
8. Reinstall the air filter door.
Re‐install the glove box.
See your dealer if additional
assistance is needed.