2005 Hummer H2 Owner's Manual - Page 332

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. 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. 5-20