Pontiac 2004 Grand Prix Owner's Manual page 303

To inspect or replace the engine air cleaner/filter do
the following:
1. 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 5-105 .
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.
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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 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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