Cadillac 2014 ATS Owner's Manual page 301

Do not remove the cap to check the
fluid level or to top off the fluid level.
Remove the cap only when
necessary to add the proper fluid
until the level reaches the MIN line.
The engine air cleaner/filter is in the
engine compartment on the driver
side of the vehicle. See
for location.
Inspect the air cleaner/filter at the
scheduled maintenance intervals.
See
. If you are driving in
dusty/dirty conditions, inspect the
filter at each engine oil change.
To inspect the engine air cleaner/
filter, remove the filter from the
vehicle and lightly shake the filter to
release loose dust and dirt. If the
filter remains covered with dirt, a
new filter is required.
To inspect or replace the air cleaner/
filter:
1. Remove the four screws and lift
the cover out of the assembly.
2. Inspect or replace the engine air
cleaner/filter.
3. Lower the cover and secure with
the four screws.
See
for replacement intervals.
Operating the engine with the air
cleaner/filter off can cause you or
others to be burned. The air
cleaner not only cleans the air; it
helps to stop flames if the engine
backfires. Use caution when
working on the engine and do not
drive with the air cleaner/filter off.
If the air cleaner/filter is off, dirt
can easily get into the engine,
which could damage it. Always
have the air cleaner/filter in place
when you are driving.