{"nhtsa_id":10201469,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-09-17","date":"2021-08-19","document_id":"21-AT-014H","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE; POWER TRAIN","mfr_system":null,"summary":"Certain vehicles (listed below) equipped with 7-speed Double Clutch Transmissions (DCT) may exhibit abnormal vibration at low speeds. This bulletin outlines the procedures for diagnosing clutch judder, updating the Transmission Control Unit (TCU) with revised logic, and/or replacing the Double Clutch.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10201469-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10201469-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10201469","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"transmission-control-module","name":"Transmission control module","parent":"powertrain"}],"codes":[],"topics":[],"vehicles":[{"make":"HYUNDAI","model":"SONATA","year_from":2015,"year_to":2018,"match":"exact","vehicle_ids":["2015_hyundai_sonata","2016_hyundai_sonata","2017_hyundai_sonata","2018_hyundai_sonata"]},{"make":"HYUNDAI","model":"TUCSON","year_from":2016,"year_to":2018,"match":"exact","vehicle_ids":["2016_hyundai_tucson","2017_hyundai_tucson","2018_hyundai_tucson"]}],"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":[]}