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U0100 Diagnostic Trouble Code Discussion for January 2012

Lost Communication With ECM

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Trouble Ticket Help Requests for DTC U0100
Help Request Posted
2008 Chevrolet Silverado 1500 WT 4.3L No Start VIN: 1GCEC14X28
U0100: Loss of com with pcm. ... DOA. Operator said he drove truck to work and shut it off, when he went out later it would not start. (Key to start position and nothing happens starter doesn't enguage) I hooked up scanner and got com with all modules but ECM. BCM had a U0100 ( loss of c...
January 10, 2012