2012v6

So i had a small shop install a 2014 3.8 into my 2012 3.8 and everytime i clear codes the same 2 codes come back 24/7, the car drives the same no changes but i dont like the CEL on all the time. How do i remove/fix the issue? My driving was the same before i install the engine nothing changed...

Hey All, I have a possible opportunity. The dealership I bought my car from has kind of dragged their feet and have not exactly been quick to resolve some minor, yet numerous issues. 7 months after I bought my 2012 V6 with tech and prem., I decided to speak to the GM of the dealership. He...