Performance Chips for GMC
I have a 2012 GMC 2500 gaser and considering getting a performance chip to add HP and increase the MPG. I'm trying to find what brands people have used and what kind of results they've got. Are ther...
Forum Discussion
Turtle n Peeps wrote:
Sorry but that won't work. The software and hardware that comes with the PCM and pickup knows where it came from. It will log changes. Cat did this many, many years ago. To this day they won't give out the codes to the field staff. Once the PCM is disconnected it will log that and the tech will know something is up.
You can change out the PCM but it knows. There is no way around it now. Many, many years ago yes, but not now.
Perhaps, but they also can't prove you made any mods to it. Only that the PCM was not in use for a period of time. PCMs get swapped all the time for various reasons.
