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Hummer H3T The popular H3 gets the added capabilties of a small pick-up, with the look and performance of the original H3.

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Old 05-13-2018, 03:12 PM
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Default Help!!!

My h3t is having some issues. It is getting stuck in park, I know how to release, but also it now has stability failure and check engine lights on dash, also speedometer is not working and running high rpm with low output?!?
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Old 05-14-2018, 12:09 PM
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Originally Posted by Tannerj View Post
My h3t is having some issues. It is getting stuck in park, I know how to release, but also it now has stability failure and check engine lights on dash, also speedometer is not working and running high rpm with low output?!?
Miles on the truck, any recent work?

Have you checked the T Case speed sensor and its wiring connector and harness? Same thing with the T Case encoder motor for range selection.
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Old 05-14-2018, 02:18 PM
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Miles on the truck, any recent work?

Have you checked the T Case speed sensor and its wiring connector and harness? Same thing with the T Case encoder motor for range selection.
miles 73500. Recent work...new CV Axel wheel hub calapers rotors and pads...
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Old 05-15-2018, 01:35 PM
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Get the codes read and post them here.

STAB FAILURE is probably one of the ABS sensors (you had a hub replaced).
Key stuck can be the neutral safety switch under the console gear shift lever.
Speedo is what Doc said to check
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