2008 Buick LaCrosse Owner's Manual - Page 294

5. To reinstall the cover, position the tabs through the slots on the housing. If your vehicle has one of the V6 engines, a notch on the sides of the filter cover will indicate the correct engagement. 6. Push the cover tabs on top of the housing to lock the cover in place. {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 flames 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. 5.3L V8 Engine 1. Lift the filter cover tabs on top of the engine air cleaner/filter housing. 2. Push the filter cover housing toward the engine. 3. Pull out the filter. 4. Inspect or replace the engine air cleaner/filter. 5-24