Dealer did the work and they didn't take any pictures. You would never know it is there. I told the dealer about the re-program and when I picked it up, they said they were on the phone with GM tech line and ended up not needing to be reprogrammed. Not sure if they were told bad information or what. Have not heard any negative feedback yet. I did call Kicker and they said at least in the Sierra trucks with noise cancellation that with all the doors closed, rev the engine and if you hear a flutter from the sub, you need would need the noise cancellation turned off. I will give it some time and see if I do in fact need it turned off. There is no volume or gain adjustment per Kicker. My dealer in So Cal charged $280. I wasn't comfortable taking the liability of taking all the panels off without breaking something so if they broke it they could fix it. All went smooth and so far so good.