{"nhtsa_id":54217,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1998-03-30","date":"1997-08-30","document_id":"97083001997","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM","mfr_system":null,"summary":"DURING NORMAL DRIVING CONDITIONS OR AT IDLE, A \"BUZZING'' OR \"RATTLING\" NOISE MAY BE HEARD FROM THE EXHAUST SYSTEM. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/54217","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MAZDA","model":"NAVAJO","year_from":1991,"year_to":1991,"match":"exact","vehicle_ids":["1991_mazda_navajo"]}],"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":[]}