The u2105 is lost com with ecm and the u2107 is lost com with bcm I have seen lost com with ecm set by a bcm. Have you checked to see if you can read data from the ecm bcm etc with a scan tool?That will check all the current conditions of the data lines going to all the computers. But will take a expensive professional scan tool.
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Friday, January 10th, 2014 AT 12:59 PM