{"nhtsa_id":10164709,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2019-09-16","date":"2019-08-20","document_id":"C2191","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM","mfr_system":null,"summary":"This field action authorizes certified repair locations to recalibrate the Engine Control Module (ECM) on certain B6.7 CM2350 engines with a product improvement calibration for improved reliability of the Cummins Engine(s).","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10164709-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2019/MC-10164709-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10164709","components":[{"id":"electrical","name":"Electrical system","parent":null},{"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":[]}