Quote Originally Posted by Brian1 View Post
Does the ECM already have a tune on it? I would make a backup of stock tune first. When you select the controller it shows a picture of the controller. See if it matches the looks of the controller you have. Couple look real close to each other. Then hit the Status to see if it connects. If so then download tune.

Brian
No there is no tune on the truck currently! I need the correct ecm so that I can upload the stock tune to save it to my laptop...

So pretty much I could chose one of the ECM's and it will only connect if its the correct one and wont mess anything up? All I am trying to do is save the stock ECM to figure out what changes I want to make to another file of this...

Thanks for you help!