Cadillac CTS - Manual (Page 352)

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 342 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 (83 000 km) interval. See
Scheduled Maintenance on page 463 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. Remove the two screws located on the sides
of the cover.
2. Lift the cover off.
CTS shown, CTS-V similar
352