Had to replace pcm due to physical damage. Purchased one through and auto parts and had a bud with TECH 2 install a stock progam. Was able to read pcm but then when trying to program to car I was prompted with pcm serial number requested. I have the latest software from efilive and also wonder why BCC info has question marks after read if this means anything. Please excuse me as I have only tuned a few vehicles. Any help would be appreciated. Vechicle is a 2002 C5.