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Hello. Based on your description of the codes and the vehicle not wanting to start, and the fact that it can be intermittent issue, my experience with these truck can fall into two different issues.
1. The cheapest and easiest fix would be to replace the fuel filter. I have seen this same issue many times and the symptoms are the same. The fuel filter is so dirty that the injectors are not getting the fuel pressure needed to open the injector pintles.
2. This will be a more expensive fix. The glow plug control module on these truck is notorious for going bad. The result is a no start condition, and/or the vehicle dying while being driven.
I am confident that one of these two things will correct the issue at hand.