{"nhtsa_id":11026620,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2025-12-16","date":"2025-12-09","document_id":"SSM 54432","mfr_campaign":null,"replaces":null,"component":"SUSPENSION; POWER TRAIN","mfr_system":null,"summary":"Some 2025-2026 Transit vehicles equipped with rear-wheel-drive (RWD), single rear wheel only, may experience a boom/hum/moan noise from the rear while driving. This noise is most noticeable at highway speeds between 70 and 90 mph (112-144 km/h). This may be due to a harmonic vibration. The Workshop Manual (WSM), Section 205-01 > Diagnosis and Testing > Driveshaft > Symptom Chart NVH > Rumble or Boom has been updated to include diagnostic and repair direction for this concern.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026620-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2025/MC-11026620-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/11026620","components":[{"id":"suspension","name":"Suspension","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"TRANSIT","year_from":2025,"year_to":2025,"match":"exact","vehicle_ids":["2025_ford_transit"]}],"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":[]}