Quick question??

Can I take a 06 Manual ecm (cm849a)and turn it Into a auto ecm (cm849b)?

Ive alredy tried. the ecm will start and run the truck but ive got all kinds of trans codes. Ive tried 3 auto files as well. I know its not the truck becasue i do have another 06 auto truck here and that works fine with no codes but i cant steal that ecm.

So am i not doing something right? some people say you can some say you cant..

If for some reason you can't load the Auto i am interested in the ECM for my truck.

I dont believe you can do it that way. I do know you can take an auto ecm and make it a manual tho.

You can easily swap os from a auto to a manual and vise versa. We do it all the time. You'll need to flash in the correct trans os

2007 5.9 said:

You can easily swap os from a auto to a manual and vise versa. We do it all the time. You'll need to flash in the correct trans os

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I’ve read and saved the other 06 auto ECM that I have here. Flashed it to the truck while the manual ECM is installed. Same

Got a file from tune Depot. Same

Got one from a Big name tuner. Same

Only way I can get rid of the Trans codes is to use that auto ECM I have here.

In always the exception never the rule!!

You should send it to Les and let him try. If he can then pay for it. If not there is an issue with the ECM itself.