2001 Cadillac Eldorado Owner's Manual - Page 270

Engine Air Cleaner/Filter 1. With a screwdriver, loosen the air duct clamp, which is located at the mass airflow sensor end of the air duct. 2. Disconnect the air duct from the mass airflow sensor. The engine air cleaner/filter is located next to the windshield washer fluid reservoir on the driver's side of the engine. For more information on location, see "Engine Compartment Overview" in the Index. Be sure the engine has cooled before following these steps to replace the engine air cleaner/filter: 6-16