Cadillac 2008 CTS - Manual (Page 303)

Engine Air Cleaner/Filter
The engine air cleaner/filter is in the engine
compartment on the driver’s side of the vehicle, near
the front. See Engine Compartment Overview on
page 5-14 for more information on location.
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 each
50,000 mile (80 000 km) interval. 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 engine air cleaner/filter, do the
following:
1. Turn the ignition off.
2. Remove side cover by pulling up on front of cover.
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