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U0100 Diagnostic Trouble Code Discussion for January 2022

Lost Communication With ECM

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Trouble Ticket Help Requests for DTC U0100
Help Request Posted
2017 GMC Canyon SL 2.8L No Start VIN: 1GTP6EE13H
U0100: lost communication with ecm. Hi this truck was towed because of no start no crank. could not communicate with various modules including tcm, ecm power steering module. between pin 6 and 14 i had 120 ohms. I hooked up a scope to pin 14 on obd2 white wire and the voltage was higher than...
January 13, 2022