{"nhtsa_id":10055138,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2014-04-16","date":"2014-01-08","document_id":"SRA-M-0374","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:ENGINE:DIESEL; EQUIPMENT:ELECTRICAL","mfr_system":null,"summary":"MACK: THERE IS AN AUTOMATIC ELECTRIC OVER SPEED PROTECTION SHUTDOWN THAT MONITORS DIESEL ENGINE RPM AND ENGINE SHUTDOWN IN EVENT OF AN OVER SPEED CONDITION, WHICH MAY BE CAUSED BY GASES, IN TRUCKS, IN OFF ROAD AREAS AND PULLED THROUGH AIR INTAKE. MODEL 2014 CHU, CXU, GU. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10055138","components":[{"id":"engine","name":"Engine","parent":null},{"id":"equipment","name":"Equipment and accessories","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"CHU","year_from":2014,"year_to":2014,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"GRANITE (GU)","year_from":2014,"year_to":2014,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"PINNACLE (CXU)","year_from":2014,"year_to":2014,"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":[]}