95 6.5
 

ok the truck starts up fine after i bleed it then about 5 to 10 mins at ide it shuts down lift pump is new just got it and its working new ops new fuel pump relay when it dies i have to bleed all over again im the it runs like nothing happend for 5 to 10 mins i dont get it

air leak if fuel line. sending unit to ip must be checked. u can try and change any spring clamps to a better quality one. top of the sending units are a bad spot for line rot. sending units are 70$ avg, u can then eliminate pluged sock or air leak at top.
this is what fixed my 95 from defueling. good luck

thanks where can i get a sending unit i tryed napa but thay told me 200

Is your truck OBD I or OBD II if it is OBD I the easiest way to test the LP is to run a wire from the positive terminal on a battery to the G terminal in the port under the dash, then open the T vavle if you have fuel you can rule out the LP

napa, norwood ontario is where i got mine. i think they looked up wrong sending unit for you. most expensive 1 i can find for a 95 6.5l is 50$ on the web. i think mine was a Dorman

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also my diesel mechanic thought my old one looked fine(no rotted lines)(sock was not plugged) yet it solved my problem 100%. hope you got an ac delco ops as its the only one that can run the lp

thanks man 200 did not sound right

Try running with the fuel cap loose- a plugged vent can cause excess tank vacuum.