{"nhtsa_id":601863,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-08-28","date":"1998-05-01","document_id":"NTB98036","mfr_campaign":null,"replaces":null,"component":"VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM","mfr_system":null,"summary":"HVAC BLOWER MOTOR NOISE. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/601863","components":[{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"NISSAN","model":"ALTIMA","year_from":1993,"year_to":1997,"match":"exact","vehicle_ids":["1993_nissan_altima","1994_nissan_altima","1995_nissan_altima","1996_nissan_altima","1997_nissan_altima"]}],"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":[]}