{"nhtsa_id":10006177,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-04-26","date":"2002-10-01","document_id":"020605004","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR","mfr_system":null,"summary":"MISFIRE DTCS AND CATALYTIC CONVERTER DAMAGE DUE TO INSTALLATION OF ALARM SYSTEMS. 2003 AND PRIOR GM PASSENGER CARS AND LIGHT DUTY TRUCKS & 2003 AND PRIOR ISUZU LIGHT DUTY TRUCKS. *MR","document":null,"url":"https://open.wenmarpro.com/bulletins/10006177","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":"AM GENERAL","model":"HUMMER","year_from":2003,"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":[]}