Chevrolet 2001 Prizm Owner's Manual page 240

To check or replace the filter, do the following:
1. Release the two clips that hold the cover down.
2. Lift the cover off.
3. Pull out the engine air cleaner/filter.
4. Install a new engine air cleaner/filter, if needed.
5. Reinstall the cover.
Refer to the Maintenance Schedule to determine when to
replace the air filter.
See "Scheduled Maintenance Services" in the Index.
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 stops flame if
the engine backfires. If it isn't there, and the
engine backfires, you could be burned. Don't
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're driving.
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