{"nhtsa_id":634521,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-03","date":"2002-07-01","document_id":"0208470041","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION:MODULE","mfr_system":null,"summary":"THIS BULLETIN IS BEING ISSUED TO REVISE DIAGNOSTIC TROUBLE CODES B1000, B1004, B1007, B1009, AND B1013 FOR 2000 - 2002 GM PASSENGER CARS AND TRUCKS. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/634521","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":["B1000","B1004","B1007","B1009","B1013"],"topics":[],"vehicles":[{"make":"BUICK","model":"BUICK","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CADILLAC","model":"CADILLAC","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CHEVROLET","model":"CHEVROLET","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"GMC","model":"GMC","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"OLDSMOBILE","model":"OLDSMOBILE","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"PONTIAC","model":"PONTIAC","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":[]}