I needed a new PCM as told buy the ford dealer so i found a used one. It is the same PCM that came out of the truck. # 2L3A-12A650-SB So i get home and put it in and, nothing. Am I missing something, If it is the same does it need reprogramed? but i did notice the theft light blinking. is there anything I can do other than take it back to the dealer?

2002 f-150 4.6L 5sp 4x4

 

Tow it to a dealer so the cluster and the PCM can be programmed to each other.