{"nhtsa_id":10054678,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2014-02-15","date":"2014-04-01","document_id":"SB-20-18","mfr_campaign":null,"replaces":"SB-20-18-A","component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:RADIATOR ASSEMBLY","mfr_system":null,"summary":"WESTERN STAR: THERE ARE RADIATOR FAILURES RESULTING IN COOLANT LEAK DUE TO A COOLANT TUBE HAVING A CRACK AND NEED AN UPDATED ISOLATED ENGINE MOUNT, IF THERE IS A CRACK IN COOLANT TUBE. *PE UPDATED 6/26/14. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10054678","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-system","name":"Cooling system","parent":"engine"},{"id":"radiator","name":"Radiator","parent":"engine"}],"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":[]}