2008 Cadillac CTS Owner's Manual - Page 306

How to Reinstall Engine Air Cleaner/Filter 1. Install the air cleaner element to the air cleaner housing. Ensure that the air cleaner element perimeter seal is installed correctly to the air cleaner housing. 2. Align the air cleaner housing cover tabs to the air cleaner housing. 3. Install the air cleaner housing cover. 4. Install the air cleaner housing cover screws. 5. Install the surge tank hose to the air cleaner housing mounting arm. Ensure that the hose is routed correctly. 6. Install the air cleaner outlet duct to the air cleaner housing. 7. Tighten the air cleaner outlet duct screw clamp. 8. Attach electrical connector to airbox. 9. Reinstall side cover. {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. 5-24