{"nhtsa_id":10001679,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-06-19","date":"2003-05-01","document_id":"011","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"CHARGING SYSTEM CHANGES TO IMPROVE ALTERNATOR OUTPUT IN HIGH AMBIENT TEMPERATURE SEVERE OPERATING CONDITIONS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10001679","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":2003,"year_to":2003,"match":"exact","vehicle_ids":["2003_kia_optima"]}],"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":[]}