Toddketcham
New Member
This has me stumped....just as I arrived home from a 300 mile road trip my '95 6.5 TD just shut off and would not restart. Checked it out and the LP was not running. I jumped the relay and got fuel flow at the T valve. Still no start. Plugged my spare relay in and still no LP. That's when I realized the fuel pump relay was not activating. What activates the fuel pump relay? Where does that signal come from? Grounds are clean, new GM OPS, new GM CPS. All the fuses test good. Anybody have any ideas? It did throw a DTC 43 which is low fuel temp.