Drove 2004 Excursion (6.0L) to neighbor's house, stayed for about an hour, came out and it cranked slower than normal, and no start. DTC Codes are P0603, 0611, 0672, 1000. I recently had my FICM rebuilt to 58v, and the 0611 never went away. Thinking it has something to do with the 0672 and the Glow Plug Control Module? If it was just the plug or wiring was bad, it should still start? Help!?