Diagnosis codes b124-04 (usb) circuit 1 open and code b1325-03 control module power circuit -low voltage

2016 CHEVROLET SILVERADO
95,600 MILES • 5.3L • V8 • 2WD • AUTOMATIC
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WILLIAM NAGY
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Did not have any issues other than slight hesitation at hard throttle ,problem connecting Bluetooth

I load tested battery and checked all cable connection alternator is putting out 14v ,everything looked good . I checked for voltage at bcm and the wires I checked had 14,v with truck running , I need a wiring diagram and pin out for bcm ,and with this open circuit is there a flow chart
To follow ,and could you give me what perimeter I should be looking for , and what would the highest speed GMLANC serial data be showing ,,I just found out about a service bulletin for this problem so I am going to pursue that but any feedback you have would be helpful. I was going to sell this truck, but I can’t with it having a code. Thanks for all your help. Have a merry Christmas.
Dec 7, 2024 at 9:51 AM
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