First off, I apologize if this is the wrong forum, but hi I'm a new guy here. I bought my first F car three months ago which is a 2000 Firebird. It's nothing exciting, just a 3800 automatic. It has been a very trouble free car which I quite like however for the past week and some change I have had a strange issue with the fuel pump. Before I continue I must add that the car does have a new fuel pump and filter which were installed by the previous owner prior to me buying it (I do have the papers that prove that). So anyway, the issue is after driving it for a couple hours or so, I will go to start the car and the fuel pump will not make any noise and it will not start. I first thought it was the fuel pump relay, so I replaced that and it worked file until the next day where the same thing happened again. After letting it sit it somehow started on its own. Fast forward a few more days and a three hour round drive later, I go to start the car, same thing! I must add that while it was running I had zero signs of anything being wrong, and the SES light was not illuminated as well. As far as the temperature was concerned, I would wager it was probably in the mid 90s and I was driving in daylight too. I ruled out fuses and the relay as I switched those, and I don't really think it could be the pump because if it was bad I don't imagine it would work at all and the new one only has 3000 miles on it. I've tried to research what's going on but came up empty handed because although I thought I fixed it, it's still persistent. Could someone help me figure out what on earth is going on? Thanks in advance.