1996 GMC Jimmy Owner's Manual - Page 260

Air Cleaner Operating the engine with the air cleanercan off cause you or others to be burned. The air cleaner not only cleans the air, it stops flamethe engine if 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 off. I NOTICE: To remove the air cleaner, removethe wing nuts that hold the cover on. Remove the cover andlift out the air filter. Insert a new air filter, then replace the air cleanercover. Tighten the wing nuts to hold the cover in place. Refer to the Maintenance Schedule to determine when to replace the air filter. See "Scheduled Maintenance Services" in the Index. If the air cleaner off, a backfire can cause is a damaging engine fire. And, dirt can easily get into your engine, which will damage it. Always have the air cleaner in place when you're driving. 6-13