{"nhtsa_id":10053695,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2013-11-16","date":"2013-08-02","document_id":"WC-C1388","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"CUMMINS: ADDRESSING THE AFTERTREATMENT SYSTEM LEADING TO FAILURE OF DEF DOSING VALVES IN TRANSIT BUS APPLICATIONS AND REROUTING OF DEF SUPPLY LINE AND COOLANT LINES TO DOSING VALVE HAS BEEN DETERMINED TO REDUCE FC 3569. MODELS ISL, ISLE3, QSL9. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10053695","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"CUMMINS","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CUMMINS","model":"ISL","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":[]}