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U0073 Diagnostic Trouble Code Discussion for November 2023

Control Module Communication Bus Off


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Trouble Ticket Help Requests for DTC U0073
Help Request Posted
2012 Chevrolet Silverado 1500 LT 5.3L Poor Idle Quality, Cuts out, MIL Lamp on VIN: 1GCRKSE76C
U0073: Can bus high. ... code P1516 throttle body performance. Customer had already replaced throttle body and pedal assy. I unplugged the PCM and throttle body. Tested all wiring between the 2 and each one lit up a H11 headlamp bulb. I also tested the B+, Ign 1 and ground at ...
November 02, 2023
2012 Chevrolet Silverado 1500 LT 5.3L Poor Idle Quality, Cuts out, MIL Lamp on VIN: 1GCRKSE76C
U0073: Can bus high. ... code P1516 throttle body performance. Customer had already replaced throttle body and pedal assy. I unplugged the PCM and throttle body. Tested all wiring between the 2 and each one lit up a H11 headlamp bulb. I also tested the B+, Ign 1 and ground at ...
November 06, 2023