{"nhtsa_id":11010260,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-11-07","date":"2024-11-01","document_id":"21-055-24","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":"Transmission Control Module","summary":"\"Flash: Transmission Control Module (TCM) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set the following Diagnostic Trouble Code (DTC): ● **P0731 - Gear 1 Shift Incorrect Ratio.** The customer may describe the following: ● **Severe bump or clunk during high engine rpm and low vehicle speed 1-2 upshift.** ● Unable to set desired gear manually from the steering wheel controls This bulletin involves reprogramming the TCM with the latest available software.\"","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11010260-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-11010260-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11010260","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":["P0731"],"topics":[],"vehicles":[{"make":"RAM","model":"1500","year_from":2021,"year_to":2021,"match":"exact","vehicle_ids":["2021_ram_1500"]}],"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":[]}