I have a 2004 1500 Quad Cab SLT with the 5.7L engine. There is about 58000 miles on the truck. A couple of weeks ago the check engine light came on but went out a couple of days later before I had a chance to check into it. I doubt it was the gas cap issue because I hadn't gassed up in a couple of days and didn't touch the gas cap before the light went out.
Today it came on again. As much as I have tried to use the key sequence to get the codes, I just cant get it to work. Tonight I went out and bought a code reader. It came back with a P0404 which I found means "P0404 Exhaust Gas Recirculation (EGR) Open Position Performance".
Any hints at what I should be looking at would be appreciated.
Thanks,
Mike