{"nhtsa_id":606520,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-08-26","date":"1999-06-01","document_id":"990842004","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING:HEADLIGHTS","mfr_system":null,"summary":"CUSTOMERS MAY COMMENT ON INOPERATIVE DAYTIME RUNNNG LAMPS (DRL) ON SOME MODELS BUILT BETWEEN VIN BREAKPOINTS WK247020 - WK258202. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/606520","components":[{"id":"lighting","name":"Lighting","parent":null},{"id":"headlight","name":"Headlights","parent":"lighting"}],"codes":[],"topics":[],"vehicles":[{"make":"CHEVROLET","model":"BLAZER","year_from":1998,"year_to":1998,"match":"exact","vehicle_ids":["1998_chevrolet_blazer"]},{"make":"CHEVROLET","model":"S SERIES","year_from":1998,"year_to":1998,"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":[]}