Hummer 2005 H2 - Manual (Page 332)

2. Lift the cover upward and set it aside.
3. Pull the air cleaner/filter up and out from the air
cleaner housing. Care should be taken to dislodge
as little dirt as possible.
4. Clean the air cleaner/filter sealing surfaces and
the housing.
5. Inspect or replace the engine air cleaner/filter.
6. Reinstall the cover and tighten the screws.
7. Reset the air filter restriction indicator, if equipped,
by pressing the top button on the indicator.
If your vehicle is not equipped with the air filter
restriction indicator, refer to the Maintenance
Schedule to determine when to replace the engine
air cleaner/filter. See Owner Checks and Services
on page 6-9.
{ 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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