ignition control module

Thanks for that information. Well, while on my 5th stop today, it just would not start. It has a new battery. I checked the fuel rail relief valve, it had fuel. One friend told me it may be the icm. Another buddy told me it takes over 6lbs of fuel pressure and that my fuel pump could be going out. I got it home hours ago. It did not start half hour ago. I may go out and try it again, then pound on the tank to see if the fuel pump may start up. It's also possible I have a pump going out. I don't have anyone handy to turn key for me so I can listen, I know it quits after pressure is established so I'm not sure yet .... Ok, I tried the pounding... and listening... and still no start. It's sounding like the fuel pump. I have heard they are notorious for going out. The previous owner changed it twice. besides this problem, truck has been great going on 209,000 miles.

You need to have a fuel pressure and volume test performed. The electrical connectors are also known for melting. Not just at the fuel pump. I believe it has a sub harnass connector the melts also.