I'm looking at a used PCM (2005 Tribute 3.0) on Ebay. The PCM part number is identical to what I'm replacing. The listing comes with the PCM, ignition tumbler and key. I'm not for sure if I have to program the skimmer on top of that or if the skimmer is just built into the PCM? I'm just wanting to know if I purchased this would I still have to program it, or would it be install the PCM and tumbler and I'm good to go? Appreciate any help.