I have a 1997 f250 7.3 I bought a couple weeks ago. Very strong truck and has already been on two 300 mile trips since I’ve had it with no issues. I went out to start it today and fired it up which the wait to start light worked fine at the time. Idled for about a minute then shut off. Thought it was weird but started right back up then did the same thing. Now the wait to start light won’t come on and it just cranks strong but won’t start at all. I checked the fuses more than once and swapped pcm relay with horn relay to make sure it worked. Checked for 12v at red/light green wire on GPR which had 12.24v so now I’m just at a loss. I’m hoping pcm isn’t fried. Is there anything I’m missing? I need to get this truck running again ASAP so any info is appreciated thank you.