{"nhtsa_id":10204385,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-12-13","date":"2021-11-11","document_id":"21-033-21","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. Customers may experience the following shift quality issue:1?2 upshift lag/delay when accelerating from a stop.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204385-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10204385-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10204385","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FIAT","model":"500X","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_fiat_500x"]}],"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":[]}