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.

2006 H3 won’t start

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  #11  
Old 10-17-2019, 04:00 PM
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Originally Posted by Peepsdada
Battery tested perfectly. Just got that done
Again, what is the resting voltage? Voltage test is simple to do while it's just sitting there not starting.
 
  #12  
Old 10-17-2019, 04:07 PM
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Resting voltage was 12.9- I took the battery out and had it tested.
 
  #13  
Old 10-17-2019, 04:17 PM
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You can't get an accurate resting voltage when you take the battery out?

How high temp affects your battery.
 
  #14  
Old 10-17-2019, 04:23 PM
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Tested battery in and out of the truck. Tested fine. Used screwdriver to start the truck. Passlock is fine.
 
  #15  
Old 10-17-2019, 05:24 PM
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Replace the ignition switch.
 
  #16  
Old 10-24-2019, 02:19 PM
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Ignition replaced, new ECM, new starter, good batteries, and new cables. Still doesn’t want to start. Only sometimes. Doesn’t even crank when it’s hot out. What the hell is wrong with this piece of crap truck.
 
  #17  
Old 10-24-2019, 04:13 PM
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Originally Posted by Peepsdada
Ignition replaced, new ECM, new starter, good batteries, and new cables. Still doesn’t want to start. Only sometimes. Doesn’t even crank when it’s hot out. What the hell is wrong with this piece of crap truck.
You replaced the switch? (NOT THE LOCK CYLINDER) The SWITCH? You also cleaned the connector?

 
  #18  
Old 10-24-2019, 04:15 PM
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Yes. I really need help with this issue
 
  #19  
Old 10-24-2019, 05:27 PM
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Back to the battery, what is the resting voltage mounted, when you get a no crank condition?

 
  #20  
Old 10-24-2019, 05:30 PM
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try swapping the starter relay for another known to work like the horn if it fits then see if the car starts or the horn works.
 


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