{"nhtsa_id":10003920,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-11-07","date":"2003-09-09","document_id":"NTB02047B","mfr_campaign":null,"replaces":"NTB02047A","component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY; VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE","mfr_system":null,"summary":"POOR HEATER PERFORMANCE. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10003920","components":[{"id":"engine","name":"Engine","parent":null},{"id":"visibility","name":"Glass, wipers and mirrors","parent":null},{"id":"hvac","name":"Heating and air conditioning","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"},{"id":"radiator","name":"Radiator","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"NISSAN","model":"ALTIMA","year_from":2002,"year_to":2003,"match":"exact","vehicle_ids":["2002_nissan_altima","2003_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":[]}