1998 Buick Park Avenue Owner's Manual - Page 292

... 2. Remove theair intake hose that snaps over the bottle body by pulling the hose upward and away from the throttle body. As YOU are detaching the hose, removeahe air cleaner housing cover by pulling upward and remarc%. 3. Replace the air filter. 4. Reattach the air intake hose. 5. Reinstall the air cleaner housing cover. Refer to the Maintenance Scheduleto determine when to replace theair filter. See "Scheduled Maintenance Services" the Index. in