{"nhtsa_id":10043307,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2012-03-12","date":"2011-12-01","document_id":"RB-11223","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CATALYTIC CONVERTOR","mfr_system":null,"summary":"HUMMER: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. RECALL BULLETIN PERTAINING TO THE EROSION OF THE MAT SUPPORT MATERIAL INSIDE CATALYTIC CONVERTER ASSEMBLY AND MAY CAUSE MALFUNCTIONING OF INDICATOR LIGHT, NOISE AND/OR PERFORMANCE REDUCTION IN ENGINE. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10043307","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":"HUMMER","model":"H2","year_from":2007,"year_to":2007,"match":"exact","vehicle_ids":["2007_hummer_h2"]}],"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":[]}