So I reset the pcm. No luck. Still throwing the p0300. I put in a new egr valve and reset the pcm again and still no luck. Only thing left I can think to do is change all the coil packs. I'm at a dead loss as what it can be.

 

Seems like you need someone to perform a diagnostic with more expensive equipment than just a code reader to uncover the real issue. You noticing antifreeze disappearing?

 

Thank God no. I seen the post you had and immediately started looking at that. I'm trying to track down the day it started happening and setting off the CEL and when I got gas last. But I drive quite a bit and fill up often. Maybe thinking that it could be the gas at this point.