{"nhtsa_id":10200552,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-09-03","date":"2021-08-24","document_id":"TSB_TRA098","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"TECHNICAL SERVICE BULLETIN: 7-SPEED DUAL CLUTCH TRANSMISSION (DCT) ANTI-JUDDER LOGIC IMPROVEMENT - This bulletin provides the procedure to update the software logic of the Dual Clutch Transmission (DCT) system on some 2016-2020MY Optima (JFa) vehicles produced from August 28, 2015 through June 1, 2020, equipped with Gamma 1.6L T-GDI engine and 7-speed DCT, which might exhibit clutch judder when accelerating from a stop.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10200552-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10200552-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10200552","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KIA","model":"OPTIMA","year_from":2016,"year_to":2020,"match":"exact","vehicle_ids":["2016_kia_optima","2017_kia_optima","2018_kia_optima","2019_kia_optima","2020_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":[]}