...and try to pull error codes from the ECM before removing it. It might throw you a clue as to what it's doing. But pennyman is on track - the ECM's are known to be the primary cause of sudden performance loss and running issues in EFI'd trucks.
...and try to pull error codes from the ECM before removing it. It might throw you a clue as to what it's doing. But pennyman is on track - the ECM's are known to be the primary cause of sudden performance loss and running issues in EFI'd trucks.
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