{"nhtsa_id":10089496,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-01-25","date":"2014-10-14","document_id":"C1552A","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"THIS CAMPAIGN AUTHORIZES CERTIFIED REPAIR LOCATIONS TO CALIBRATE THE ENGINE CONTROL MODULE (ECM) ON CERTAIN ENGINES WITH IMPROVED SOFTWARE, WHICH WILL PROVIDE IMPROVED COMBUSTION STABILITY. THIS IS A REVISION TO A PREVIOUS COMMUNICATION.","document":null,"url":"https://open.wenmarpro.com/bulletins/10089496","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"ISL9G","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":[]}