A FICM might be the most likely. Just guessing without more information though.

 

Little bit of an update,
I guess my scan tool is not great , i cant find the values asked for a couple posts up.
I did check FICM voltage and its 56.5 engine off and 56 running.
Alternator is putting out 12.9 to 13.8 v
pulled and cleaned the EGR valve, it was dirty but not plugged up or anything. Also no antifreeze in the hole

does the torque app show the stuff needed? I have the app but lost my bluetooth connector. Just re ordered one along with a fitting so I can check fuel pressure. No one in this friggen town seems to sell the proper fitting.

 

I got an new obd2 plug so here is what other values I could get
InjPW 1080
Ex Back press 17.1
Fuel pump DC 100
IPR 27.4
VGT 69.6
Hpop 599.6
Map 14.7
Just waiting on a fitting to test fuel pressure, Amazon sent me the wrong one...
Fuel pump sounds a little sickly when I turn the key on, it starts off with a slow hum then speeds up then slows down ,then speeds up......almost like what my RPM does hmmmm

 

 

Autometer adapter for the fuel pressure test port showed up from Amazon today and its too big!!! the fitting hits the regulator housing and cant be tightened up..You would think living in Canada where we use metric it would be easy to find a simple fitting. Anyone have a site I can get a fitting that isn't astronomical in price or will take a month to get here? Glowshift has the adapter 7.99 from their site but will take weeks to get here unless i pay $42 in shipping.

 

 

Did you check the FICM harnesses to make sure the connectors were locked into place?

Check the IPR wiring harness for chafes.

 

Here is a pic of mine I ground down the brass a bit for fitment

 

Ground down the fitting, hooked it up and went for a drive. 55 psi at idle, 50 at WOT. this was when the motor was still cold, went for a longer drive to get the engine warmed up as the surging is much more noticeable then. Surging and loss of power got worse as it warmed up, fuel pressure held fine. Let the throttle off to coast up to a stop sign and truck stalled, when I tried to restart it just barely started, sounded like it was starving for fuel. Got up to the next corner let off on the gas and stalled. could not restart the truck until it sat for about 10 min. When it did start as soon as i put it in gear it died. waited, restarted, held the rpm above 1200 and put it in gear, got it to move but very low power and as soon as I put more of a load on it by turning the wheel it stalled again. Let it sit for 45 min or so, started it up and was able to limp it back to within a block of the hous before it died again.
To answer Bismic I did look at wiring but not super close, I will check that out better when and if I can get the truck the last block home.
Any other ideas on what it could be?
Thanks for all the help so far everyone.

 

Did you try pulling and cleaning egr valve and sealing rings??

my valve was cocked open and stuck left me walking in the rain... towed home pulled valve replaced with a new one.

 

Shuddered and died while at intersection

 

Let the truck sit for a couple hours, started right up and drove the last block home. I pulled and cleaned the EGR valve last week, it was dirty but nothing too crazy.
Wires into the FICM see to be seated and I dont see any chaffing on the wiring harness. Went to pull the cap off the fuel regulator to see if I was getting any air in the fuel. Guess what broke (yes I was using a socket). So any tips to removing the cap would be appreciated.

 

When were the two fuel filters changed last?

 

fuel filters were the first thing I changed when the issue started. OEM from the dealer