{"nhtsa_id":11029081,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2026-02-27","date":"2026-02-17","document_id":"SSM 54592","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"For 20172026 vehicles equipped with a 10R transmission, a revision to the Road Testing Vehicle procedure has been made in the WSM, located in Section 307-01 > Diagnosis and Testing. This updated procedure improves the diagnosis of customer reported transmission concerns and aids in locating the proper root cause. During diagnosis and testing, details regarding whether the condition is more prevalent when the vehicle is hot or cold, throttle percentage at the time of occurrence, vehicle speed, the specific shift involved, and whether the issue occurs during transmission engagements (N>R, N>D, R>D, or D>R) should be noted. Engineering requests including these detailed operating conditions that will significantly assist with root cause analysis. Diagnosis, testing, and repair should use established labor times outside this article.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029081-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2026/MC-11029081-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11029081","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"BRONCO","year_from":2021,"year_to":2026,"match":"exact","vehicle_ids":["2021_ford_bronco","2022_ford_bronco","2023_ford_bronco","2024_ford_bronco","2025_ford_bronco","2026_ford_bronco"]},{"make":"FORD","model":"EXPEDITION","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_ford_expedition","2026_ford_expedition"]},{"make":"FORD","model":"EXPLORER","year_from":2020,"year_to":2026,"match":"exact","vehicle_ids":["2020_ford_explorer","2021_ford_explorer","2022_ford_explorer","2023_ford_explorer","2024_ford_explorer","2025_ford_explorer","2026_ford_explorer"]},{"make":"FORD","model":"F-150","year_from":2017,"year_to":2026,"match":"exact","vehicle_ids":["2017_ford_f-150","2018_ford_f-150","2019_ford_f-150","2020_ford_f-150","2021_ford_f-150","2022_ford_f-150","2023_ford_f-150","2024_ford_f-150","2025_ford_f-150","2026_ford_f-150"]},{"make":"FORD","model":"F-250 SD","year_from":2020,"year_to":2026,"match":"base","vehicle_ids":["2020_ford_f-250","2021_ford_f-250","2022_ford_f-250","2023_ford_f-250","2024_ford_f-250","2025_ford_f-250","2026_ford_f-250"]},{"make":"FORD","model":"F-350 SD","year_from":2020,"year_to":2026,"match":"base","vehicle_ids":["2020_ford_f-350","2021_ford_f-350","2022_ford_f-350","2023_ford_f-350","2024_ford_f-350","2025_ford_f-350","2026_ford_f-350"]},{"make":"FORD","model":"F-450 SD","year_from":2020,"year_to":2026,"match":"base","vehicle_ids":["2020_ford_f-450","2021_ford_f-450","2022_ford_f-450","2023_ford_f-450","2024_ford_f-450","2025_ford_f-450","2026_ford_f-450"]},{"make":"FORD","model":"F-550 SD","year_from":2020,"year_to":2026,"match":"base","vehicle_ids":["2020_ford_f-550","2021_ford_f-550","2022_ford_f-550","2023_ford_f-550","2024_ford_f-550","2025_ford_f-550","2026_ford_f-550"]},{"make":"FORD","model":"F-650 SD","year_from":2024,"year_to":2026,"match":"base","vehicle_ids":["2024_ford_f-650","2025_ford_f-650","2026_ford_f-650"]},{"make":"FORD","model":"F-750 SD","year_from":2024,"year_to":2026,"match":"base","vehicle_ids":["2024_ford_f-750","2025_ford_f-750","2026_ford_f-750"]},{"make":"FORD","model":"MUSTANG","year_from":2024,"year_to":2026,"match":"exact","vehicle_ids":["2024_ford_mustang","2025_ford_mustang","2026_ford_mustang"]},{"make":"FORD","model":"RANGER","year_from":2019,"year_to":2026,"match":"exact","vehicle_ids":["2019_ford_ranger","2020_ford_ranger","2021_ford_ranger","2022_ford_ranger","2023_ford_ranger","2024_ford_ranger","2025_ford_ranger","2026_ford_ranger"]},{"make":"FORD","model":"TRANSIT","year_from":2020,"year_to":2025,"match":"exact","vehicle_ids":["2020_ford_transit","2021_ford_transit","2022_ford_transit","2023_ford_transit","2024_ford_transit","2025_ford_transit"]},{"make":"LINCOLN","model":"AVIATOR","year_from":2020,"year_to":2026,"match":"exact","vehicle_ids":["2020_lincoln_aviator","2021_lincoln_aviator","2022_lincoln_aviator","2023_lincoln_aviator","2024_lincoln_aviator","2025_lincoln_aviator","2026_lincoln_aviator"]},{"make":"LINCOLN","model":"NAVIGATOR","year_from":2025,"year_to":2026,"match":"exact","vehicle_ids":["2025_lincoln_navigator","2026_lincoln_navigator"]}],"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":[]}