truck wont start...
I have a 99 powerstroke, I just replaced the altenator, both batteries and i pulled the gem module let it sit in side warm up and dry out. when i put the module back in i covered it so no water could get on it. All my problems I had with the gem disappeared. It worked great for two days now I go to start it and it will barely roll over. The batteries are reading like they have a good charge and are sitting where they would if the truck were running. I have no idea where to go from here.