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.

2007 H3 wont fire.

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  #1  
Old 12-09-2016, 10:07 AM
SteveSS's Avatar
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Default 2007 H3 wont fire.

It's been a little slow in firing lately, couple of turnovers before it catches. I know about the theft control trick and I've left the key off for 10 minutes or more. Still no fire. Shot some starting fluid down the MAF sensor, nothing.

I did buy the key lock thingy that is supposed to stop the anti theft interference but never installed it. Not sure i can even find it now. It was also extremely cold yesterday. 0 degrees and snowing. Put some Heet in the tank, nothing. Had it out the night before and it was fine.

If anyone has some ideas I'm all ears.

Steve
 
  #2  
Old 12-09-2016, 11:56 AM
Happy Hummer's Avatar
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Hi,
* Battery connectors
* Battery
* Ground wires
Replace the connectors...Replace the battery...Clean the ground points at the frame and sheet metal throughout the engine bay area.
 
  #3  
Old 12-09-2016, 01:52 PM
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You mean it is turning over but does not start? Is the security light illuminated on the dash?

The little lock thing
 
  #4  
Old 12-09-2016, 02:44 PM
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Yes the engine is turning over fine.

Yes the security light is on.

The part I have, that I haven't installed is about 5 inches long and has a black and white plug at one end. If I knew what it was called maybe I could look up how to replace it.
 
  #5  
Old 12-11-2016, 08:07 PM
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Passlock
 
  #6  
Old 11-17-2019, 12:07 PM
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Default Hummer h3 2007 anti theft lock 🔐 won’t start

I purchased a by pass module and it worked I drove it shut it off and now it won’t start again.
 
  #7  
Old 11-17-2019, 04:35 PM
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did the pass lock light come back again? read the instructions maybe it needs a relearn for your bypass module.
 

Last edited by bronxteck; 11-18-2019 at 12:49 PM.
  #8  
Old 11-17-2019, 06:01 PM
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Originally Posted by Aprild
I purchased a by pass module and it worked I drove it shut it off and now it won’t start again.
It appears you need a double bypass.
 
  #9  
Old 11-17-2019, 09:52 PM
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So buy a second one and put that in also?
 
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