{"nhtsa_id":627868,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-02-25","date":"2001-10-02","document_id":"021001","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE","mfr_system":null,"summary":"INFORMATION REGARDING THE OO WING HEATER HOSE ADAPTOR TO ELIMINATE ALTERNATOR WHINE ON. *YH","document":null,"url":"https://open.wenmarpro.com/bulletins/627868","components":[{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"PARK AVENUE","year_from":1999,"year_to":2001,"match":"exact","vehicle_ids":["1999_buick_park-avenue","2000_buick_park-avenue","2001_buick_park-avenue"]}],"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":[]}