{"nhtsa_id":10003683,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2003-10-28","date":"2003-06-02","document_id":"060203","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR","mfr_system":null,"summary":"REFER TO BULLETIN 03-06-04-028 FOR CATALYTIC CONVERTER REPLACEMENT WITH A P0420 CODE. MODEL UNKNOWN. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10003683","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":["P0420"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"CADILLAC","year_from":2002,"year_to":2003,"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":[]}