{"nhtsa_id":54477,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-04-20","date":"1997-12-12","document_id":"97121209B015","mfr_campaign":null,"replaces":null,"component":"STEERING","mfr_system":null,"summary":"INFORMATION ON TRW STEERING GEAR SEAL KITS. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/54477","components":[{"id":"steering","name":"Steering","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"MACK","year_from":1997,"year_to":1997,"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":[]}