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U2106 Diagnostic Trouble Code Discussion for January 2010

ECM - No Communication With Transmission Control Module

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Trouble Ticket Help Requests for DTC U2106
Help Request Posted
2004 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHK24154
U2106: Lost communication w/trans control system. The customer brought us the truck due to the MIL being on. We cleared the code and gave the truck back. The light stayed off for a couple of days but then came back on. The same codes are present as the first time. We have checked and cleaned all grounds. My n...
January 25, 2010