I have a a boat load to still write up, but I'll give you this or the time being....
2 things. I had a major prob not getting spark.
#1 which I refused to believe because I know it had been previously good, my crank sensor was bad.
#2 I had 2 issues with my pcm.
A. most all Grand Cherokee's come with vtss (vehicle theft) and this will not let the motor to not start after so many attempts and if it does start it will only run for a few seconds. the pcm looks for bcm to match vins with vtss, if it does not see the match, it will kill the fuel/ignition.
B. I had a bad pin connection on the board itself which is rare. I think it was due to a fall off the dart's fender so please be more careful than I was! lol
