{"nhtsa_id":10009217,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2004-09-17","date":"2004-04-14","document_id":"04142004","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM","mfr_system":null,"summary":"WITH THE AC ON, LED APPEARS TO TOGGLE ON AND BACK OFF IN ONE UNIQUE CONDITION. THIS CONDITION IS THE HEADLAMPS ARE ON, INSTRUMENT PANEL LAMPS ARE DIMMED TO THE LOWEST EXTREME, DAYTIME CONDITIONS AND THE REAR DEFOG BUTTON IS TURNED ON AND OFF OR ALLOWED TIME TO TIMEOUT. ENGINEERING INVESTIGATED HAS DETERMINED THE CONDITION IS NORMAL. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/10009217","components":[{"id":"electrical","name":"Electrical system","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"BUICK","model":"CENTURY","year_from":2000,"year_to":2005,"match":"exact","vehicle_ids":["2000_buick_century","2001_buick_century","2002_buick_century","2003_buick_century","2004_buick_century","2005_buick_century"]},{"make":"BUICK","model":"REGAL","year_from":2000,"year_to":2004,"match":"exact","vehicle_ids":["2000_buick_regal","2001_buick_regal","2002_buick_regal","2003_buick_regal","2004_buick_regal"]},{"make":"BUICK","model":"REGAL","year_from":2005,"year_to":2005,"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":[]}