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 Transmission Help

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Old Jul 11, 2021 | 03:59 PM
  #1  
Brenton Tom's Avatar
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Default H3 Transmission Help

Today my H3 suddenly start to act up while driving it started to slip like it was in neutral but in drive mode.

anyone had this issue before?

please help
 
Old Jul 11, 2021 | 05:12 PM
  #2  
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Check/Inspect fluid level, running @ operating temp.




 
Old Jul 12, 2021 | 03:01 PM
  #3  
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Thank you. I will do a ATF flush and change the filter and gasket. Hopefully that helps otherwise I need to redo the tranny.
 
Old Jul 12, 2021 | 03:16 PM
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Year, miles, any recent work done just prior to onset of symptoms are ALL IMPORTANT when asking any question looking for an informed answer.
 
Old Jul 12, 2021 | 03:19 PM
  #5  
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MOVED.

Also, DO NOT POST in the H3 FAQ Section, just like it tells everybody in the Sticky Thread at the top. "Do not post in this section" .... just because you thought up some question does not make it an FAQ.
 
Old Jul 17, 2021 | 11:39 PM
  #6  
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ok, I changed the filter and gasket and put new Castrol ATF fluids and now there seems to be a slight clicking noise when in gear.

I have 93k miles.
 
Old Jul 18, 2021 | 10:14 AM
  #7  
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Did the filter, gasket, new Castrol ATF fluid fix your tranny problem?
 
Old Jul 18, 2021 | 11:42 AM
  #8  
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It did other than this clicking noise when in Drive or Reverse.
 
Old Jul 18, 2021 | 03:06 PM
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Originally Posted by Brenton Tom
It did other than this clicking noise when in Drive or Reverse.
BE MORE SPECIFIC. CLICK? I GET THAT NOISE EVERY TIME I LIGHT MY CIGARETTE. DO YOU GET A "CLICK" ONCE OR CONSTANT/ROTATIONAL?
 
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