{"nhtsa_id":10203296,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2021-11-08","date":"2021-06-17","document_id":"C2379","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This campaign is being issued to recalibrate the Engine Control Module (ECM) on certain X15 CM2450 engines. The campaign enables authorized repair locations to calibrate the engine control module (ECM) to the latest revision. This calibration update may provide certain improvements to diagnostics and aftertreatment system performance. This is an update to a previously submitted communication.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10203296-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2021/MC-10203296-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10203296","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"X15","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":[]}