Hummer H1 The original Hummer, which brought the Hummer look to the public eye during Desert Storm, with the addition of some features that make the H1 more of a street vehicle and less of a Army truck

2004 Hummer H1 - Restoration and bringing it back to life

Old Mar 22, 2023 | 10:14 AM
  #41  
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The new extra large heatsink that I'll be replacing the current heatsink with, for size comparison. It's much larger, with a lot more cooling fin surface area

 
Old Mar 24, 2023 | 10:05 PM
  #42  
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New upgraded parts should be here in the next few days

* Raptor lift pump

​* Feed the beast upgraded fuel line

* Two new Dorman/Flight Systems "XD" PMD's

* SS Fuel pressure tap





In the meantime, the H1 has been running great everyday and feeling healthy. But this morning I went to start it, started up and just turned off after about 30 seconds. Did some troubleshooting with disconnecting the optical sensor and then the crank sensor to rule those out. Checked all fuses and relays. Checked all the pins in the PMD connector for proper voltage and resistance per the service manual. Checked fuel flow (not pressure). Checked for water in the fuel filter. And then finally played musical chairs with the three PMD's I have in my possession. Two of them which I know failed at this point. The oldest PMD I have finally started the truck right up.



I'm not going to drive it until I get the Raptor high flow lift pump installed, along with the FTB line. I really have a feeling at this point that the factory lift pump is just tired and causing issues. Who knows, I might be wrong, but we will find out in a few days.



And as always, video update below



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Old Mar 24, 2023 | 10:08 PM
  #43  
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Steering wheel installation steps. Incase anyone else is wondering how to put a new steering wheel on your Hummer H1



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Old May 18, 2023 | 03:49 PM
  #44  
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Got the ModMafia Dual PMD heatsink and battery tie down bracket installed today. Had it sitting for a couple months in the garage and finally got time to put it on. I gotta admit, it’s pretty nice. Very nicely machined and the anodizing seems well done. And it was a perfect fit. Video of the install if you’re curious how it looks and fits on the H1.

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Old May 24, 2023 | 02:57 PM
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Made a pigtail dummy plug for the spare PMD to protect the terminal and connector from the elements. Took 5 minutes and well worth the effort:

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Old May 24, 2023 | 04:27 PM
  #46  
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Originally Posted by nkpgarage
Made a pigtail dummy plug for the spare PMD to protect the terminal and connector from the elements. Took 5 minutes and well worth the effort:

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https://youtu.be/X1Myjjgn-jE
Why not remove the terminals and seal the end to make a true DUMMY connector?
A Metri-Pack 150.2 6 Way would be a better solution so there's no wires contacts connected, just seal the exposed end where the wires enter:




 
Old May 25, 2023 | 07:10 AM
  #47  
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Originally Posted by hummerz
Why not remove the terminals and seal the end to make a true DUMMY connector?
A Metri-Pack 150.2 6 Way would be a better solution so there's no wires contacts connected, just seal the exposed end where the wires enter:



You know, you are so right!! Sometimes I guess I overthink things. Just ordered the connector and will redo it. Thanks for the suggestion! :-)
 
Old May 25, 2023 | 08:01 AM
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You already have the connector just de-pin it.



 
Old May 25, 2023 | 09:31 AM
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Originally Posted by hummerz
You already have the connector just de-pin it.

Dangit, you and your common sense :-) hehe.... I need more coffee this morning
 
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