{"nhtsa_id":10253766,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2024-05-01","date":"2024-04-25","document_id":"C2750","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING","mfr_system":null,"summary":"This campaign enables authorized repair locations to recalibrate the Engine Control Module (ECM) on certain B6.7 CM2450 B155B ESNs. The existing calibration may cause the engine to not comply with current emissions regulations.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10253766-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2024/MC-10253766-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10253766","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CUMMINS","model":"B6.7","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":[]}