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.

ABS light and Traction Control lights.

Old Jul 7, 2025 | 08:07 AM
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Default ABS light and Traction Control lights.

I have been working on my own vehicles for 55 years. I love my H3 but these electronics suck. I long for the days of mechanical without electronics.

I have changed several parts and I have tried to reset/clear the codes with real good equipment but the yellow lights are still on. Dio doesn’t show any wheel problems.

can any one think of another odd part that is tied to these light that causes them to come on?
 
Old Jul 7, 2025 | 09:12 AM
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Please post the code(s)
 
Old Jul 8, 2025 | 01:42 AM
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Wheels speed sensors
tcm
Pcm
Harness
Tcase actuator
Just a few...
 
Old Jul 8, 2025 | 01:42 AM
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Yaw too!
 
Old Jul 8, 2025 | 11:41 AM
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If your T Case actuator ever got wet, like sitting in deep water/mud for a few minutes, that will cause your problem too.

Even continuing to try and use the OEM the crappy azzed battery terminal connectors can trigger that.

Literally dozens of possibilities. That is why we need the code(s) to help.
 
Old Jul 8, 2025 | 12:16 PM
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Thank you all.
you have given me a few hours work to check it out.
 
Old Jul 8, 2025 | 12:21 PM
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Old Jul 13, 2025 | 03:38 AM
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Those ABS and TCM codes are sporadic on my 06 H3.

Over the 20 years of ownership. I have learned to ignore the alarms. They seem to come and go and have no true meaning.
 

Last edited by wpage; Jul 13, 2025 at 03:45 AM.
Old Jul 14, 2025 | 08:20 AM
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Originally Posted by H3carlo
I have been working on my own vehicles for 55 years. I love my H3 but these electronics suck. I long for the days of mechanical without electronics.

I have changed several parts and I have tried to reset/clear the codes with real good equipment but the yellow lights are still on. Dio doesn’t show any wheel problems.

can any one think of another odd part that is tied to these light that causes them to come on?
If you haven't done so already, throw a little money at it and change out the Yawl sensor located under the driver's seat.
Prices have doubled lately, but still worth it and you can always keep the old one for a spare if not the problem.
https://www.ebay.com/itm/35644063709...Bk9SR_azgZGBZg
 
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