{"nhtsa_id":10076027,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-07-07","date":"2016-01-01","document_id":"WATCH 501","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN:AUTOMATIC TRANSMISSION; ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"Allison Transmission 5th Generation Controls 2016 (B161, C161, and D161) Software Features and Enhancements Allison Transmission, Inc. (ATI) is pleased to announce the release of the Allison 5th Generation Controls 2016 (B161, C161, and D161) Software Features and Enhancements. This release will include enhanced software and calibrations for the Transmission Control Module (TCM).","document":null,"url":"https://open.wenmarpro.com/bulletins/10076027","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"ALLISON DIV","model":"ALLISON DIV","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"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":[]}