Rob Reasor Posted July 8, 2013 Share Posted July 8, 2013 We have a 1999 Mack ch613 with an e7 427 motor. We have had a number of shutdowns while the truck is moving at highway speeds. It just stops running. Electronic malfunction and engine shutdown light comes on and we have to turn off key and restart after getting to the side of the road. Yesterday it threw a 6-4 code that points to a j1939 code. I have read the service bulletin and blog on this and am confused. One says that it is a ground issue (SB221032) and one says ABS short or malfunction. Where do we start to fix this issue. Quote Link to comment Share on other sites More sharing options...
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