{"nhtsa_id":11029905,"type":"other","type_name":"Other","date_added":"2026-03-07","date":"2026-02-04","document_id":"TT9444","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":"Transmission","summary":"Instructions for requesting permission to activate a calibration setting for 6th generation transmission control modules to enable fuel economy and GHG benefits of neutral at stop on a vocational vehicle","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029905-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029905-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11029905","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ALLISON","model":"1000 SERIES TRANSMISSION","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"ALLISON","model":"2000 SERIES TRANSMISSION","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"ALLISON","model":"3000 SERIES TRANSMISSION","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"ALLISON","model":"4000 SERIES 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":[]}