I think I lost my program. I have a 01excusion with a edge cts and a 02 f250 both with 7.3. My f250 started to have problems running so I put the edge on the f250 for the guages to help troubleshoot. After finding and fixing the problem I put the programmer back on the EX,flashed the tow program and then it would not start. Flashed back to stock, no start. Contacted edge, they went through some steps online with me and they updated the cts. Truck now runs but the water in fuel light stays on and the theft light flashes all the time. I ran the check codes, even though the check engine light was not on, and it is giving me codes for the glow plug module. I replaced the GPM about 6 months ago so im hoping that it is still good.

Do you think I need to have the computer flashed at a stealership?