Ok here it goes, helped a buddy of ours swap in a 98 Park Avenue motor.. Minus a couple of changes everything went as planned. Once we got everything hooked back up. The engine wont crank, we are using the old PCM but that shouldnt matter right? At the moment the fuel pump will intermitently kick in and the car wont turn over.. Im guessing a ground problem?

Any help would be greatly appreciated he just needs to get it back up and running....