{"nhtsa_id":10187127,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-02-16","date":"2021-01-23","document_id":"21-001-21","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; POWER TRAIN","mfr_system":null,"summary":"Flash: Transmission Control Module (TCM) Updates This bulletin involves reprogramming the TCM with the latest available software. The customer may experience one or more of the following:Poor shift quality. Shift or gear hunting. The 6-4 and 5-3 shift can have a bump. Some 2-3, 3-4 or 4-5, shifts may flare when the transmission is cold. Coastdown bump. The following software enhancement is available:Stored faults can only be cleared by a diagnostic scan tool, this software will allow the TCM to self clear.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187127-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10187127-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10187127","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"RAM","model":"3500","year_from":2019,"year_to":2019,"match":"exact","vehicle_ids":["2019_ram_3500"]},{"make":"RAM","model":"4500","year_from":2019,"year_to":2019,"match":"exact","vehicle_ids":["2019_ram_4500"]}],"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":[]}