{"nhtsa_id":10058360,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2015-09-04","date":"2015-03-01","document_id":"SB-49-16","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:DIESEL","mfr_system":null,"summary":"WESTERN STAR: TRUCK PARKED EXTENDED TIME, AND DEF FREEZES AND WITH ICE EXPANING BREAKS DEF LINE FITTING CONNECTION TO SUCTION PORT AND WOULD NEED REPLACING. MODEL 4700. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10058360","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"4700","year_from":2013,"year_to":2013,"match":"exact","vehicle_ids":["2013_western-star_4700"]}],"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":[]}