Cadillac 2005 DeVille - Manual (Page 287)

Engine Air Cleaner/Filter
See Engine Compartment Overview on page 5-12 for
the location of the engine air cleaner/filter.
When to Inspect the Engine Air
Cleaner/Filter
Inspect the air cleaner/filter at the Maintenance II
intervals and replace it at the first oil change after
50,000 miles (83 000 km). See Scheduled Maintenance
on page 6-4 for more information. 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 filter, do the following:
1. Loosen and remove both wing screws on the top of
the engine air cleaner/filter cover.
2. Lift up the outboard side of the cover at an angle
while pulling toward you. This is necessary due to
the three tabs located on the rear of the cover.
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