1995 Chevrolet S10 Pickup Owner's Manual - Page 230

To remove the rectangular air cleaner filter for the 4.3L (VIN W) engine, open both clamps and push the rear of the air cleaner back toward the rear of the engine compartment to change the filter. While reassembling the air cleaner assembly, ensure that the air cleaner cover tabs are fullyinserted into theslots in the air cleaner housing. On the 4.3L (VINW) engine, also make certain that the PCV air tube is properly seated in the left hand valve cover. Refer to the Maintenance Schedule todetermine when to replace the air filter. See "Scheduled Maintenance Services'' in the Index. I NOTICE: If the air cleaner off, a backfire can cause damaging engine is a fire. And, dirt can easily get into your engine, whichdamage will it. Always have the air cleaner in place when you're driving. 6- 13