bigyeep
Junior Member
I am looking at a 2007 dually with the 5.9 in it. The owner stated that he thinks the fuel pump is going out. The reason he stated that is because when the fuel tank gets down to 1/4 tank the grid heater light comes on. I have owned several diesels and never herd of this. Any help with why the grid heater light would be coming on would be helpful.
