Hi everyone, I was hoping someone might have an idea what is going on, its a mystery on my end.

Below is a copy of the codes my 1996 k1500 4x4 is throwing. It seems to misfire every 30 - 40 seconds, and it almost seems like it is starving of fuel. Not sure if the codes are related, the O2 sensor ones have been there a while, but the ECT one is new. It did cut off a few times while running. I don't think it's the fuel pump, I replaced that 6 months ago, cleaned the tank and all. Any suggestions would be great. I'm just an novice home mechanic, so bare with me if I ask silly questions.

Thanks!

Jeremy