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Re: 05 silverado can't program ecm error codeE4399
Posted to Technical Discussion Forum on 2/27/2024 1 Reply

Reman by whom?

There should still be communication between a scan tool and a reman PCM before programming.

It sounds like you have a communication problem.

The old PCM lost all injector control? I've never seen that, I would be double checking the diagno... Login to read more.

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