{"nhtsa_id":10034250,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2010-10-30","date":"2010-04-01","document_id":"TSB-067","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE","mfr_system":null,"summary":"KIA: ECM UPGRADE FOR IMPROVED SHIFT QUALITY-EQUIPPED WITH 2.4L ENGINE AND A/T. PROVIDES THE PROCEDURE TO UPGRADE THE ENGINE CONTROL MODULE (ECU) OF SOME VEHICLES WITH 2.4L ENGINES. COMPLAINTS OF POOR SHIFT QUALITY/PATTERN DURING UP SHIFTS AND DOWN SHIFTS; THIS UPGRADED LOGIC WILL REDUCE THOSE COMPLAINTS. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10034250","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":2009,"year_to":2010,"match":"exact","vehicle_ids":["2009_kia_optima","2010_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":[]}