Buick Regal 2011 Owner's Manual page 251

10-14 Vehicle Care
If you are driving in dusty/dirty
conditions, inspect the filter at
each engine oil change.
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:
2.0 L L4 Engine
1. Open the hood. See Hood on
page 10 5.
A. Electrical Connector
B. Air Duct Clamp
C. Screws (5)
2. Disconnect the outlet duct by
loosening the air duct clamp (B).
3. Disconnect the electrical
connector (A).
4. Remove the screws (C) on top
of the engine air cleaner/filter
housing.
5. Lift the filter cover housing away
from the engine.
6. Pull out the filter.
7. Inspect or replace the engine air
cleaner/filter.
8. Reverse Steps 2 through 4 to
reinstall the filter cover housing.
2.4 L L4 Engine
1. Open the hood. See Hood on
page 10 5.
A. Screws (6)
B. Air Duct Clamp
C. Electrical Connector
2. Disconnect the outlet duct by
loosening the air duct clamp (B).