UPGRADES now CODE P0601
#1
UPGRADES now CODE P0601
Hello you all, new to the Duramax world, I have a 05 LLY, been listening to the upgrade advise, removed the stock MP replaced with the LBZ MP, and removed the stock muffler. Mileage went from 15.5 to 16.4 mpg, the truck is running great!, but now I have a code P0601. I guess this is the ECM problem. I'm reading about re-flashing the computer to fix the problem. What is re-flashing? can I do this or am I at the dealers mercy. any help appreciated..
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