I see on a web site a gm stage 3 ecm (pretuned). So my question is, if I swap my ecm for the stag3 ecm and for some reason I have to reswap for the original to go to my dealership does he can find my swap and void my warranty or if he can't see nothing.

 

nope.. you should be fine..

 

does he have a think to do the swap or you just change it

 

You can just change it out. Once you power the Stage III down and unplug it, there's nothing on the car that has any "logic".

 

The resaon is, I have 5 years of warranty and I want put another ecm with ca stage 6 but if ihave a problem with the car want to return to dealership with the stock without he find my mod

 

Can't do it with the stage 3 pcm. It is locked so you can't tune it.

 

if you're that worried, don't mod your car.

 

I will got another stock ecm and will tune it with a ca st6

 

What was the point of this thread then?

 

that's what i'm worried about... you're going to put in a cobalt addiction stage 6, then worry about the warrenty?

 

And this is why SS owners get **** whenever something breaks and we go in for warranty.

Dude, if your motor goes kaput and you go back to stock, the dealer if they know anything about anything, will go "wtf" and obviously know the hole in cylinder #4 wasnt done from "normal" driving. There is THOUSANDS of LSJ's bone stock that dont have a hole in the wall of cylinder #4. I'd be surprised you could be one of few if at all that have a catastrophic engine failure. I'd sure as hell won't warranty it.

 

all I want to know is if I put a ECM stage6 and I take off to put again the stock ecm, does the dealership can find the ecm swap

 

so you'd be driving a "stage 6" setup cobalt with a stock ecm? yea, i think they'd know.