{"nhtsa_id":603385,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-02-19","date":"1998-07-02","document_id":"04B015","mfr_campaign":null,"replaces":null,"component":"STRUCTURE:FRAME AND MEMBERS","mfr_system":null,"summary":"SUBJECT ON HEAVY -DUTY 44,000-LB TRUNNION BRACKET. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/603385","components":[{"id":"structure-body","name":"Body and frame","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"CH","year_from":1998,"year_to":1998,"match":"exact","vehicle_ids":["1998_mack_ch"]},{"make":"MACK","model":"MACK","year_from":null,"year_to":null,"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":[]}