{"nhtsa_id":10172138,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2020-03-06","date":"2020-02-28","document_id":"UEBE041500","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING; EQUIPMENT","mfr_system":null,"summary":"PRODUCT SUPPORT PROGRAM FOR REPLACING THE ECM ON CERTAIN C7 AND C9 ON-HIGHWAY ENGINES - On the C9 the warning light illuminates and fault code is logged. ECM broadcasting false low RPM and causes vehicle controller low RPM fault. Alternator kicks out at elevated speeds due to the low RPM fault. On the C7 the engine will not start due to an internal reset in the ECM. The ECMs are only on engines in military applications. It is believed that all impacted engines have been reworked as coordinated by Caterpillar's Defense and Federal Products group.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10172138-0001.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2020/MC-10172138-9999.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10172138","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CATERPILLAR","model":"C7","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"CATERPILLAR","model":"C9","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":[]}