{"nhtsa_id":620535,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-08-13","date":"2001-04-10","document_id":"81401WS001","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM:IGNITION:SWITCH","mfr_system":null,"summary":"CONCERNS THAT THE COLE HERSEE CAB DISCONNECT SWITCH MAY BE PRONE TO CORROSION WHICH COULD RESULT IN A TRUCK NO-START CONDITION. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620535","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"ignition","name":"Ignition","parent":"electrical"}],"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":[]}