mcratchet1 Posted July 7, 2017 Share Posted July 7, 2017 ok i have a 2011 mack chu613 last eight on vin is bm007782 truck is in derate mode here is the list of codes spn3064 fmi11 spn3936 fmi0 spn4354 fmi4 spn 4354 fmi5 spn4356 fmi4 spn 4356 fmi5 spn 2659 fmi18 we did put a new def pump on because it was not using any for 2 day the hoses are labeled and was put back where they were where should i start on this rig any help is very appreciated thanks!!!! Quote Link to comment https://www.bigmacktrucks.com/topic/50413-ats-light-on-2011-mack-chu-help/ Share on other sites More sharing options...
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