Chevrolet 2004 Impala, Owner'S Manual, Page: 286 / 410

1. To check or replace the engine air cleaner/filter do
the following:
Loosen the two clips on the top of the engine air
cleaner/filter housing and lift the filter cover tabs out
of the housing.
2. Push the filter cover housing toward the engine.
3. Pull out the filter.
4. Check or install a new engine air cleaner/filter. See
Normal Maintenance Replacement Parts on
page 6-13.
5. To reinstall the cover, position the tabs through the
slots on the housing. A notch on the sides of the
filter cover will indicate the correct engagement.
Reinstall the two clips on the top of the housing
when you are finished.
Refer to the Maintenance Schedule to determine when
to replace the air filter.
See Scheduled Maintenance on page 6-4.
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CAUTION:
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 flame if the engine backfires. If it is not
there and the engine backfires, you could be
burned. Do not drive with it off, and be careful
working on the engine with the air cleaner/
filter off.
Notice: If the air cleaner/filter is off, a backfire can
cause a damaging engine fire. And, dirt can
easily get into your engine, which will damage it.
Always have the air cleaner/filter in place when you
are driving.
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