{"nhtsa_id":602703,"type":"service_bulletin","type_name":"Service bulletin","date_added":"1999-01-07","date":"1998-11-27","document_id":"98WS001","mfr_campaign":null,"replaces":null,"component":"EXTERIOR LIGHTING:HAZARD FLASHING WARNING LIGHTS:UNIT","mfr_system":null,"summary":"CONCERNS PERTAINING TO THE OPERATION OF THE 4-WAY EMERGENCY FLASHERS. *YC","document":null,"url":"https://open.wenmarpro.com/bulletins/602703","components":[{"id":"lighting","name":"Lighting","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"WESTERN STAR","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":[]}