2002 Chevrolet Blazer Owner's Manual - Page 361

Engine Air Cleaner/Filter 3. Insert a new air filter, if needed. 4. Reinstall the engine air cleaner/filter cover. Refer to the Maintenance Schedule to determine when to replace the engine air cleaner/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. The engine air cleaner/filter is located toward the front of the engine compartment on the driver's side of the vehicle. See "Engine Compartment Overview" in the Index for more information on the location of the engine air cleaner/filter. To check or replace the engine air cleaner/filter do the following: 1. Remove the fasteners that hold the cover on and remove the cover. 2. Lift out the engine air cleaner/filter. 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. 6-16