So I had the chance to run by the shop today. I mentioned to them since the light came back on, now I seem to have a rough idle speed, up and down for the first couple minutes after sitting over night. So they did a scanner on it and wrote some stuff down. I don't have copies of what he wrote down. I told them that just yesterday before I filled up my tank of fuel, I put some STP fuel injector cleaner in. They suggested that I run that full tank of fuel and then come back to them when the light pops again and I am low on fuel and allow it to sit over night, so when they come in the morning, they can hear the rough idle. This idle didn't come about until after the new intake gaskets were installed. So whatever that means... I asked about, what intake gaskets did they replace, upper or lower. Mechanic told me this one, this is only the one where the intake attaches to the block basically. So I was like OK. I suggested maybe the PCV valve is clogged up again. So after a short conversation I was about to go about my way and the mechanic noticed the CEL had reappeared. So he then cleared it again.
So here I am again. LOL. I can think of numerous items it could be. But replacing all of that, might as well just replace the truck then. But I don't want to do that.