Hummer Forums - Enthusiast Forum for Hummer Owners

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

Thread Tools
 
Search this Thread
 
  #1  
Old 10-03-2019, 08:10 AM
Peepsdada's Avatar
Junior Member
Thread Starter
Join Date: Oct 2019
Posts: 12
Default 2006 H3 won’t start
I have a 2006 H3 that will not start when it is hot. Won’t even crank. All lights and everything turn on but will not start. It starts fine if it cool or if it’s been sitting for a while. But when sitting in the hot sun or driving for a while it will not crank. Changed my starter and my passlock and still having problems. Can anyone help me??
 
Reply
  #2  
Old 10-07-2019, 10:45 AM
Doc Olds's Avatar
Super Moderator
Join Date: Jul 2007
Location: Boat Town USA MI
Posts: 12,419
Default
MOVED this for you to the H3 section where all questions regarding H3s go.

Does it have an aftermarket alarm or kill switch installed?

Do you still have the crappy azzed OEM Battery Terminal Connectors? If so, hack them off and replace with a quality aftermarket set like Stingers or your favorite brand. Then let us know if you still have problems.
 
Reply
  #3  
Old 10-12-2019, 08:32 AM
Ricardowelch's Avatar
Junior Member
Join Date: Sep 2019
Posts: 11
Default
Originally Posted by Peepsdada
I have a 2006 H3 that will not start when it is hot. Won’t even crank. All lights and everything turn on but will not start. It starts fine if it cool or if it’s been sitting for a while. But when sitting in the hot sun or driving for a while it will not crank. Getting the answer when to replace car battery at Autoguysland if you want ot know. Changed my starter and my passlock and still having problems. Can anyone help me??
You should try checking ignition switch if it is full of a mixture of grease and dust. Clean it if yes. If it doesn't work. check the battery if it is bad or die.
 
Reply
  #4  
Old 10-17-2019, 10:38 AM
Peepsdada's Avatar
Junior Member
Thread Starter
Join Date: Oct 2019
Posts: 12
Default
Still have issues after replacing battery cables and connectors, new starter, excellent battery, new passlock etc. truck will NOT start if it’s hot- all lights and everything come in but does not even turn over. In the evening when it’s cool or if it sits in the shade it starts fine. Any other suggestions? PLEASE HELP!!
 
Reply
  #5  
Old 10-17-2019, 01:12 PM
hummerz's Avatar
Senior Member
Join Date: Jul 2012
Location: C-Town
Posts: 8,220
Default
Try swapping relays:
#77 with #87
If still no crank
#78 with #88.
 
Reply
  #6  
Old 10-17-2019, 01:43 PM
Peepsdada's Avatar
Junior Member
Thread Starter
Join Date: Oct 2019
Posts: 12
Default
Swapping relays did not work. I’m at a loss
 
Reply
  #7  
Old 10-17-2019, 02:16 PM
hummerz's Avatar
Senior Member
Join Date: Jul 2012
Location: C-Town
Posts: 8,220
Default
What's the resting voltage on the battery?
 
Reply
  #8  
Old 10-17-2019, 03:26 PM
Doc Olds's Avatar
Super Moderator
Join Date: Jul 2007
Location: Boat Town USA MI
Posts: 12,419
Default
Ah..... the "Excellent Battery", sold nation wide.
 
Reply
  #9  
Old 10-17-2019, 03:52 PM
Peepsdada's Avatar
Junior Member
Thread Starter
Join Date: Oct 2019
Posts: 12
Default
Battery tested perfectly. Just got that done
 
Reply
  #10  
Old 10-17-2019, 03:58 PM
hummerz's Avatar
Senior Member
Join Date: Jul 2012
Location: C-Town
Posts: 8,220
Default
Originally Posted by Doc Olds
Ah..... the "Excellent Battery", sold nation wide.
Product of Sri Lanken yet it doesn't crank when hot.
My DEKA battery cranks, no matter what the temp is.
 
Last edited by hummerz; 10-17-2019 at 04:02 PM.
Reply



Advanced Search
Quick Reply: 2006 H3 won’t start


Reply Closed Thread Share

All times are GMT -5. The time now is 11:23 PM.