1997 GMC Yukon. Won't start. Has spark and fuel pressure

I have a 1997 GMC yukon. Has the 5.7 ltr vortec. A week ago I parked the truck and then the next day I went to start it and it just turned over. I put a fuel pressure gage on it and it had good pressure. I checked the spark at number one and it has good spark and timing. After letting it sit and trying a couple more times I got it to start leading me to believe it might have just been flooded. I didnt know you can flood a fuel injected truck? Or half fuel injected. Not sure what its called. So the truck drove fine for the past week and has just happend again. This time I cant get it to start though. Any ideas? The truck did not have the check engine light on. The only other thing I can think of is that both times this happend I tryed to start the truck with the remote start and it was low on fuel both times. Never had the problem before with the remote start.