{"nhtsa_id":10169941,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-01-08","date":"2019-12-13","document_id":"SSM 48403","mfr_campaign":null,"replaces":null,"component":"POWER TRAIN","mfr_system":null,"summary":"Some 2020 F-150/Mustang/Ranger vehicles equipped with 10R80 transmissions may exhibit a high-pitched whine noise coming from the rear of the transmission at speeds between 30-50 km/h (18-30 MPH) during light acceleration and while coasting down. The noise will not be present when the vehicle in in NEUTRAL. This may be due to an output shaft bearing. This condition will not affect transmission durability or function. If no additional symptoms are present, do not attempt any repairs or transmission replacement at this time. Engineering is investigating, monitor OASIS for updates.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10169941-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10169941-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10169941","components":[{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"F-150","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_ford_f-150"]},{"make":"FORD","model":"MUSTANG","year_from":2020,"year_to":2020,"match":"exact","vehicle_ids":["2020_ford_mustang"]}],"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":[]}