{"nhtsa_id":631198,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-05-21","date":"2002-03-29","document_id":"7SB0020204A","mfr_campaign":null,"replaces":null,"component":"STRUCTURE:BODY","mfr_system":null,"summary":"CUSTOMERS MAY COMPLAIN OF A WHISTLING NOISE FROM THE GRILLE, A REDESIGNED GRILLE IS AVAILABLE FOR WINNEBAGO SIGHTSEER AND ITASCA SUNOVA MOTOR HOMES BUILT BEFORE 01-18-02. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/631198","components":[{"id":"structure-body","name":"Body and frame","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ITASCA","model":"ITASCA","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"WINNEBAGO","model":"WINNEBAGO","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}