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U0140 Diagnostic Trouble Code Discussion for August 2021

Lost Communication With BCM


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Trouble Ticket Help Requests for DTC U0140
Help Request Posted
2014 Chevrolet Caprice PPV 6.0L MIL Lamp on VIN: 6G3NS5U28E
U0140: Lost communication body module. This car has on going bus communication issues seems to affect all module newer codes are knock sensor low voltage idle speed low fuel pump control module looking at the wiring not sure where to start
August 10, 2021