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February 1, 2014 Service bulletin

Mack truck: to address piston cooling jet (PCJ) diagnostic fault, regenerations in cold climates (-20C),...

Mack technical service bulletin PI-0839 for 2010 Mack Cxu, 2011-2012 Mack Pinnacle (Cxu) and 2011-2012 Mack Pinnacle (Chu) and others.

Bulletin number
PI-0839
Component
Electrical system: software
Summary
Mack truck: to address piston cooling jet (pcj) diagnostic fault, regenerations in cold climates (-20c), the transmission electronic control unit (tecu), engine control module (ECM) and aftertreatment control module (acm) have updated software enhancement that are available. Model chu, cxu.

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