{"nhtsa_id":634784,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-09","date":"2002-06-01","document_id":"020601026","mfr_campaign":null,"replaces":null,"component":"UNKNOWN OR OTHER","mfr_system":null,"summary":"SUBJECT REGARDING ENGINE IDENTIFICATION INFORMATION FOR 2003 AND PRIOR PASSENGER CARS AND TRUCKS AND 2003 HUMMER H2 WITH NORTH AMERICAN ENGINES. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/634784","components":[],"codes":[],"topics":[],"vehicles":[{"make":"AM GENERAL","model":"HUMMER","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"BUICK","model":"BUICK","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"CADILLAC","model":"CADILLAC","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"CHEVROLET","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"GMC","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"ISUZU","model":"ISUZU TRUCK","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"OLDSMOBILE","model":"OLDSMOBILE","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":[]}