I checked DTC's on my gryphon today, pulled up a p0191 fuel rail pressure, I searched and saw some people having the code, but no real fixes. I havent replaced my fuel filter in 15k, so I am going to start there, I was just wondering if it has fixed it for anyone else

 

If the fuel filter doesn't work try checking the fuel pump driver module for corrosion and cracks. Its mounted back by the spare tire on a cross member you will have to drop the spare tire to get to it. It has 2 bolts and 1 electrical connector on it. If your state uses road salt its probably corroded. Mine was pretty bad & had a hairline crack on it but still works so I removed all the corrosion. and sealed the crack with rtv then painted the bottem part of the module because it is bare metal the top is plastic. good luck.

 

Alright thanks for the tip, I changed the fuel filter(took about 2 minutes) and cleared the code, I drove 100 miles and no code, so I think that was it