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U0100 Diagnostic Trouble Code Discussion for January 2010

Lost Communication With ECM

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Trouble Ticket Help Requests for DTC U0100
Help Request Posted
2006 Chevrolet Cobalt LS 2.2L MIL Lamp on VIN: 1G1AK15F56
U0100: Lost communication with ECM/PCM. The vehicle has been back twice since the body repairs were finished, with check engine light on and power steering assist not working. The vehicle computer will intermittantly not communicate with the scanner, and when I do get communication, the codes mentio...
January 04, 2010