{"nhtsa_id":10170122,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-01-13","date":"2019-12-16","document_id":"2019FA09","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:SOFTWARE; EQUIPMENT","mfr_system":null,"summary":"Letter authorizing Mid Coast Engine & Transmission to service transmission control modules for Houston Metro buses","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10170122-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10170122-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10170122","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"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":[]}