{"nhtsa_id":10012295,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2005-02-24","date":"2005-01-24","document_id":"435","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR","mfr_system":null,"summary":"CATALYTIC CONVERTER MUFFLER (CCM) RATTLE INSPECTION. THE CATALYTIC CORE MAY COME LOOSE INSIDE THE CCM AND RATTLE. KENWORTH. MODELS C500S, T600S, T800S, AND W900S BUILT 7/03 - 12/03. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10012295","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null},{"id":"catalytic-converter","name":"Catalytic converter","parent":"exhaust-emissions"}],"codes":[],"topics":[],"vehicles":[{"make":"UNKNOWN","model":"UNKNOWN","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":[]}