I noticed that sometimes when I crank the truck. The engine would turn over but not catch. If I connect the slave cable and jump with my other cicv, she would glow a lot shorter time and then start right up. The batteries both show over 12,6v and I took the battery cables off and cleaned them. I can only think of two scenarios- one that the batteries don't hold the amperage needed, or that the battery connectors have not a good contact.
cucvrus?
cucvrus?