Hummer H3 For the Hummer driver who wants the rugged look and off road capabilities of the Hummer, but in a smaller size and with a more fuel economy friendly engine.

H3 Alternator R&R from the top. Lots of pictures.

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Old Dec 29, 2019 | 02:20 PM
  #41  
Leonh's Avatar
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Excellent tutorial, saved me a lot of headaches 😁
 
Old Jan 2, 2020 | 08:02 PM
  #42  
N4ser19!'s Avatar
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Default Fuel line tools

Hey brother, you mentioned fuel line tools, which ones are you talking about so I can get them before replacing my alternator? Thank you,

Mike
 
Old Jan 2, 2020 | 08:37 PM
  #43  
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Default Fuel disconnect tool


This is what I used
Amazon Amazon


 
Old Jan 3, 2020 | 06:28 AM
  #44  
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@N4ser19! 3/8" is the fuel line size
 
Old Jan 3, 2020 | 03:21 PM
  #45  
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Default Very helpful

Originally Posted by Leonh
@N4ser19! 3/8" is the fuel line size
thanks brother!!
 
Old Mar 1, 2020 | 10:58 PM
  #46  
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I just went thru this process. Everything went pretty smooth, until i tried starting it. Nothing. No lights no crank...nothing. Can't even get the key out of the ignition. Wife said the battery light kept coming and going, there were a couple times where she went to start it and wait 15 minutes because of "anti-theft". Also a couple of times where she lost all dash lights for a short period of time. She took it to Advance Auto to have everything tested and the guy told her the Alternator was going bad. Took it to another today for a second opinion and this guy said it was a bad battery. Ordered a new alternator from rockauto last week so i figured i would throw it on there. Got the battery new in December of 2018. I should have just left well enough alone. :/
 
Old Mar 2, 2020 | 06:31 AM
  #47  
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Default H3 alternator R&R from the top

Originally Posted by Sighlense
I just went thru this process. Everything went pretty smooth, until i tried starting it. Nothing. No lights no crank...nothing. Can't even get the key out of the ignition. Wife said the battery light kept coming and going, there were a couple times where she went to start it and wait 15 minutes because of "anti-theft". Also a couple of times where she lost all dash lights for a short period of time. She took it to Advance Auto to have everything tested and the guy told her the Alternator was going bad. Took it to another today for a second opinion and this guy said it was a bad battery. Ordered a new alternator from rockauto last week so i figured i would throw it on there. Got the battery new in December of 2018. I should have just left well enough alone. :/
Sighlense;371139
 
Old Mar 2, 2020 | 06:34 AM
  #48  
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Default H3 alternator R&R from the top

Sighlense;371139. It more than likely is the connection on your fuse block , the plug in has slots to engage the plug, make sure it's lined up properly, the harness engages when you push it down,like a hinge had the same issue as you did
 
Old Mar 2, 2020 | 10:04 AM
  #49  
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Originally Posted by Leonh
Sighlense;371139. It more than likely is the connection on your fuse block , the plug in has slots to engage the plug, make sure it's lined up properly, the harness engages when you push it down,like a hinge had the same issue as you did
After re-reading how he put it back together i am going to go back and connect the female end white box(s) harness to the fusebox first to make sure they are connected, then drop it down into the box. Thanks for your reply. Fingers crossed.
 
Old Mar 2, 2020 | 11:28 AM
  #50  
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Went back in and individually connected the white and grey female blocks. took a lot of force but they finally popped into place. Got everything backed together and still have nothing. No juice...no nothing.
 



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