1998 GMC Sonoma Owner's Manual - Page 266

Air Cleaner 2.2L Engine "VORTEC" 4300 Engine To remove this air cleaner, remove the wing nuts that hold the cover on. Remove the cover andlift out the air filter. Insert a new air filter, then replace the air cleaner cover. 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. To remove this air cleaner, remove the wing nuts that hold the cover o n . Remove the cover and lift o u t the ai r fi 1ter. Insert a new air filter, then replace the air cleaner cover. Tighten the wine nuts to hold the cover i n place. 6-16