{"nhtsa_id":51920,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1997-07-17","date":"1997-03-31","document_id":"97713","mfr_campaign":null,"replaces":null,"component":"SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM","mfr_system":null,"summary":"NOISE- \"BUZZING\"- UNDERHOOD WHEN AIR SUSPENSION IS IN OPERATION. *JD","document":null,"url":"https://open.wenmarpro.com/bulletins/51920","components":[{"id":"suspension","name":"Suspension","parent":null},{"id":"air-suspension","name":"Air suspension","parent":"suspension"}],"codes":[],"topics":[],"vehicles":[{"make":"FORD","model":"EXPEDITION","year_from":1997,"year_to":1997,"match":"exact","vehicle_ids":["1997_ford_expedition"]},{"make":"FORD","model":"F-250","year_from":1997,"year_to":1997,"match":"exact","vehicle_ids":["1997_ford_f-250"]}],"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":[]}