{"nhtsa_id":634517,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2002-10-03","date":"2002-07-01","document_id":"020847002","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION:MODULE","mfr_system":null,"summary":"THIS BULLETIN IS BEING ISSUED TO REVISE DIAGNOSTIC TROUBLE CODES B1552, B1556 AND B1558. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/634517","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"codes":["B1552","B1556","B1558"],"topics":[],"vehicles":[{"make":"CADILLAC","model":"ELDORADO","year_from":2000,"year_to":2002,"match":"exact","vehicle_ids":["2000_cadillac_eldorado","2001_cadillac_eldorado","2002_cadillac_eldorado"]}],"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":[]}