{"nhtsa_id":11026974,"type":"other","type_name":"Other","date_added":"2026-01-05","date":"2025-12-10","document_id":"SIL 32-EP-25","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":"Transmission","summary":"Announces release of backwards compatible retrofit kit for solenoid","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026974-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026974-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11026974","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"ALLISON","model":"H 40 EP TRANSMISSION","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"ALLISON","model":"H 50 EP 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":[]}