GMC 2012 Acadia - Manual (Page 253)

Black plate (13,1) GMC Acadia/Acadia Denali Owner Manual - 2012
Climate Controls 8-13
6. Remove the old air filter from the
passenger compartment air filter
housing (B).
7. Install the new air filter.
8. Replace the housing cover.
9. If removed, reinstall the
instrument panel compartment
assembly.
10. Reinstall the compartment
retainers.
See your dealer if additional
assistance is needed.