{"nhtsa_id":10236953,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2023-05-30","date":"2023-04-25","document_id":"2101123","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; ELECTRICAL SYSTEM","mfr_system":null,"summary":"Flash: Transmission Control Module (TCM) Updates Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find the following Diagnostic Trouble Code (DTC) has been set. ? P0729-00 - Gear 6 Shift Incorrect Ratio. Other software enhancement: ? Improved vehicle downshift and coast down performance. This bulletin involves reprogramming the TCM with the latest available software.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10236953-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2023/MC-10236953-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10236953","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0729"],"topics":[],"vehicles":[{"make":"CHRYSLER","model":"300","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_chrysler_300"]}],"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":[]}