{"nhtsa_id":10056546,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2014-12-24","date":"2014-08-01","document_id":"PI-364-845","mfr_campaign":null,"replaces":null,"component":"ENGINE; ELECTRICAL SYSTEM:SOFTWARE","mfr_system":null,"summary":"MACK: WHEN SUSPENSION, ON SOME TRUCKS, IS LEFT DUMPED, THERE ARE NO WARNING LIGHT, BUZZER OR ROAD SPEED LIMIT, DUE TO VEHICLE ELECTRONIC CONTROL UNIT (VECU) SOFTWARE FAILS TO SUPPORT VENDOR ENGINES REGARDING THIS FUNCTION. MODEL GU, CXU. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10056546","components":[{"id":"electrical","name":"Electrical system","parent":null},{"id":"engine","name":"Engine","parent":null},{"id":"software","name":"Software","parent":"electrical"}],"codes":[],"topics":[],"vehicles":[{"make":"MACK","model":"GRANITE (GU)","year_from":2012,"year_to":2013,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"GU","year_from":2011,"year_to":2011,"match":null,"vehicle_ids":[]},{"make":"MACK","model":"PINNACLE (CXU)","year_from":2011,"year_to":2013,"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":[]}