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U0077 Diagnostic Trouble Code Discussion for January 2022

control module communication can bus off

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Trouble Ticket Help Requests for DTC U0077
Help Request Posted
2017 GMC Canyon SL 2.8L No Start VIN: 1GTP6EE13H
U0077: control module communication can bus off. 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