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U1345 code Duramax

Klint

By Klint
in Troubleshooting, Warranty & Recalls

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Klint New Member

Klint

Posted
Posted

Have a new 2021 Silverado 3500 Duramax w @ 8,000 miles on it. Didn't drive or start truck for several days and when I did check engine light came on. OnStar read code and it's U1345....cleared the code and it came back on when the truck was turned off and re started. Very frustrating w such new truck! Anyone had this code pop up?? Any incite would be much appreciated...thanks

mjm-1957 Enthusiast

mjm-1957

Posted
Posted

It is a LIN bus communication error with the ECM. Bring it back to the dealer and let them fix it.

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