{"nhtsa_id":10076028,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2016-07-07","date":"2016-01-01","document_id":"WA7742EN","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"Notification of Design Change for the 12V and 24V Vehicle Interface Modules (VIM) Effective Q4 2016, Allison Transmission has modified the 12V and 24V Vehicle Interface Modules (VIM) to improve performance and enhance long-term durability. An internal modification has been made to improve VIM function. This change will not alter form or fit and there will be no change regarding installation on the vehicle. This VIM modification will not impact the OEM.","document":null,"url":"https://open.wenmarpro.com/bulletins/10076028","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"ALLISON","model":"TRANSMISSION","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":[]}