1998 Pontiac Grand Prix Owner's Manual - Page 295

Air Cleaner To check or replace the cleaner filter: air 1. Loosen the wing nut on the air duct. I A CAUTION: Operating the enginewith the air cleaner off can cause youor others to be burned. The cleaner air if not only cleans the air, it stops flame the engine backfires. If it isn't there,and the engine backfires, you could be burned. Don't drive with the it off, and be careful working on engine with the air cleaner off. 2. Lift up on thetwo clips located on top of the filter cover. I NOTICE: 3. Disconnect the duct and reposition while removing it the side cover. 4. Pull out the filter. Be sure to install the filter and air install the cover tightly when you are finished. to Refer to the Maintenance Schedule to determine when replace theair filter. If the air cleaner is off, a backfire can cause a dirt damaging engine fire. And, can easily get into your engine, which will damage it. Always have theair cleaner in place when you're driving. See "Scheduled Maintenance Services" in the Index. 6-20