{"nhtsa_id":10111662,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-08-15","date":"2017-07-19","document_id":"TSB170089-071720","mfr_campaign":null,"replaces":null,"component":"ELECTRICAL SYSTEM; ENGINE; POWER TRAIN:AUTOMATIC TRANSMISSION","mfr_system":null,"summary":"This Technical Service Bulletin describes the verification and resolution to the Allison transmission control module setting diagnostic trouble code P2637 (J1939 SPN 513 FMI 7) caused by an Engine Control Module (ECM) calibration code issue.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10111662-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2017/MC-10111662-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10111662","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"powertrain","name":"Transmission and driveline","parent":null},{"id":"automatic-transmission","name":"Automatic transmission","parent":"powertrain"}],"codes":["P2637"],"topics":[],"vehicles":[{"make":"CUMMINS","model":"CUMMINS","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":[]}