2004 2500HD wont start - Chevy and GMC Duramax Diesel Forum
01-04.5 LB7 Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 05-27-2008, 03:12 PM   eBay Motors  #1 (permalink)
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2004 2500HD wont start

I have a 2004 GMC Duramax diesel and have recently been having a no start problem. The dealer cannot find the problem had it for three days. My wife picked it up today stopped at Wal Mart and it wouldn't start. Dealer is not finding any codes and does not know what to do. I had the injector harness replaced about a year ago.

Please help we are scheduled to go on vacation (pulling a 5th wheel).

Thanks,
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Old 05-27-2008, 03:14 PM   eBay Motors  #2 (permalink)
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2004 2500HD won't start

This is a continuation of my earlier post. The engine turns over just won't fire.
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Old 05-27-2008, 09:33 PM   eBay Motors  #3 (permalink)
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The primer is located on the passager side down below the fuel filter. There is a black plastic bleeder screw replace that and prime truck back up. I have been seeing alot of this happing with 01-04 the truck looses prime threw the bleeder
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Old 05-28-2008, 04:51 AM   eBay Motors  #4 (permalink)
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I would agree with duramaxin14 that it is probably losing prime. I have an '01 that did it on occasion. However, I would suggest that you replace not just the cheap piece of junk plastic screw if it is not sealing, but I would also put in a new fuel filter before your trip. It comes with new O-rings, which helped my situation tremendously.

Other than that, it is real easy to get primed back & running, so I wouldn't worry about your trip. To me it was just more of an annoyance. Good Luck.
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Old 05-28-2008, 07:54 AM   eBay Motors  #5 (permalink)
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I have also had a problem with crank no start once after fueling up.
I had a scan tool with me by chance and found low rail pressure. I found the fuel pressure service port on the low side of the pump was leaking and sucking air. I tightened the cap down extra tight and blead out for a quick fix.
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Old 05-28-2008, 04:04 PM   eBay Motors  #6 (permalink)
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Same problem with my 04 2500 HD. Dealer cannot find codes or anything. They replaced the feul filter housing and filter. This has happened twice since that "repair". Next time this happen look and see if the factory security light ( pad lock) on the dash blinks . Turn the key forward but do not start. If all the dash lights go off and the padlock is blinking, you will have to wait for 3-5 minutes truck should start and fire right up . Pain in the butt when it happens. Look and see if the padlock light on the dash comes on while you are driving too. I have noticed this a few times and then I have to go through this routine again.

Last edited by Texas Red DMAX; 06-02-2008 at 08:02 PM.
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Old 06-16-2008, 10:29 PM   eBay Motors  #7 (permalink)
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I am having a similar problem. I have a 03 2500hd and EVERY TIME I use the truck and turn it off it will not start but if I wait for an hour or more it fires up immediately, no hesitation. The dealer had it for over a week with no answers. This has been going on for almost a year and I just dont drive when I cant park it where I am going.
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Old 12-19-2010, 08:09 PM   eBay Motors  #8 (permalink)
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help i cannot get my o4 2500 hd started
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Old 12-20-2010, 07:25 AM   eBay Motors  #9 (permalink)
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Quote:
Originally Posted by medicinehat View Post
help i cannot get my o4 2500 hd started
Please start a new thread -- and give some information of the problem -- Won't start is not enough!

Does it turn over-?
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Old 11-13-2013, 10:14 AM   eBay Motors  #10 (permalink)
 
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2004 Duramax started and ran 30 seconds, went dead. Now turns over, sounds fine but won't start. 1/4 quarter tank fuel, battery good.
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