{"nhtsa_id":10054473,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2014-01-29","date":"2013-09-01","document_id":"FSB-284-044","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ENGINE AND ENGINE COOLING:ENGINE:DIESEL","mfr_system":null,"summary":"MACK TRUCKS: UNDER CERTAIN CONDITIONS, SOME TRUCKS MAY HAVE EXPERIENCE REGENERATION SERVICE FAILURES, THAT INCLUDE HIGHER TURBOCHARGER WHEEL SPEED, HIGHER BOOST PRESSURE, HIGH ENGINE LOAD, UNEVEN ENGINE SPEED AND LOW T2 TEMPERATURES ON ENGINES. MODEL 2011-2013 CXU, GU. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10054473","components":[{"id":"engine","name":"Engine","parent":null},{"id":"exhaust-emissions","name":"Exhaust and emissions","parent":null}],"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":[]}