{"nhtsa_id":11033380,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-06-03","date":"2026-05-26","document_id":"27-012","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"KW: A Transmission Control Module (TCM) software update is now available for certain T680, T880, and W990 chassis with Eaton Endurant transmissions, TCM software version R5.5 or later and an AT5 controller, where the TASPS fails. Please see the Eaton bulletin TAIB-1015 in the Attachments section for details. PB: A Transmission Control Module (TCM) software update is now available for certain Model 567, 579, and 589 chassis with Eaton Endurant transmissions, TCM software version R5.5 or later and an AT5 controller, where the TASPS fails. Please see the Eaton bulletin TAIB-1015 in the Attachments section for details.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11033380-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11033380-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11033380","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"KENWORTH","model":"T680","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_kenworth_t680","2026_kenworth_t680"]},{"make":"KENWORTH","model":"T880","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_kenworth_t880","2026_kenworth_t880"]},{"make":"KENWORTH","model":"W900B","year_from":2025,"year_to":2025,"match":null,"vehicle_ids":[]},{"make":"KENWORTH","model":"W900S","year_from":2010,"year_to":2010,"match":null,"vehicle_ids":[]},{"make":"PETERBILT","model":"567","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_peterbilt_567","2026_peterbilt_567"]},{"make":"PETERBILT","model":"579","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_peterbilt_579","2026_peterbilt_579"]},{"make":"PETERBILT","model":"589","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_peterbilt_589","2026_peterbilt_589"]}],"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":[]}