I have a 2005 Duramax 6.6, I just had the fuel filter changed, and day one, started little hard, day 2 started harder, day 3 does not start. I checked the blleder screw on top of motor, was full up, I prmed motor, no air sigh at all. Just won't start, keeps turnig over... Where do I go from here?

Please have a fuel pressure leak down test performed, most likely the check valve in the fuel pump has failed. A special tool and skills are needed top run this test.

After replacing the fuel filter did you prime the system? There should be a small circular pump on top of the filter assembly to prime it. I own a 2003 Duramax and it usually takes about 5 pumps / turn over / 5 more pumps / turn over / and 5 more and you should get it started. It will take longer if you didn't fill the fuel filter with diesel before installing it as well. Let me know. Thanks.

just had this problem it was the PDM ended up replacing the glow plugs
best price and life time warranty for both was at Auto Zone recommend if you buy the PDM get the extension cable and move the PDM to a cooler location

I would suggest checking the water sensor in the bottom of the fuel filter. It's made of plastic and I've heard of them developing small cracks.

05 duramax injectors have gone bad I'm told because the ecm has gone bad. Is this the case or I'm I being told a crock? They say it needs 4 injectors. While I was driving down the road it started missing and then it would quit and start missing again. After about 6 miles it died. After changing the fuel filter and priming the system it would not start unless assisted with gas vapor. It will run for a few seconds (20 or so) very rough with no power at all and then would die. Does Chevrolet have any recomendations or will they give any assistence with this problem. I don't think I'm the first person that has had injector problems with the Duramax .

Thanks
Mike
Wheeler

Sounds like a compression leak from one or more injectors into the fuel system. I am guessing that you already changed both the frame and under hood fuel filters in the last 15,000 miles? Be sure the cap on the frame fuel filter is tight, any gap between the cap and housing can cause fuel to return to the tank instead of going filtered o the engine.

whens the last time you changed the fuel filter? ther maybe to much water in the filter and the tank, on warmer days the fuel maybe trying to seprate in the filter, when you go to start it you maybe trying to run it on water more then diesel. add a cetien booster to the tank of fuel you have see if that helps

test replace the fuel pump relay, make sure the relay socket has 12 volts to 2 of it's terminal when the key is held in crank position, if not you may have a defective ignition switch or Powertrain control module (PCM)

fuel pump is obviouslynot working !
check it & its wiring!!!!!