Bad 4x4 actuator?

[Jack_M]

OK I got my truck back in January and I have only gotten to drive it a few times since then. Well there is a small "play" area behind the gas station near me. Normally I like to switch 4x4 modes on my other trucks at least once a month to make sure they work. I have not had the chance to do it with this truck. Well anyways as soon as I attempt to switch to 4 Hi lock My cluster lights up like a Christmas tree something about stability control and stuff like that. I was able to get it back in normal mode and get it back home it drives perfectly in 4 hi street just don't try to switch modes apparently. Are these the signs of a bad actuator motor? is there anything I can try and do to get it to loosen up? I am pretty sure this truck was a garage queen/soccer mom hauler before I got it. I am sure it has probably never been switched 4x4 modes before now. any help would be greatly appreciated it will be another three weeks before I get to go home and play with my truck. I want to have a few ideas my home time is short.

 

[Happy Hummer]

Yep, pretty much sounds like actuator. Thats what the 06 H3 did when the unit went t!ts up....

Having "Service Stabil Trac" warnings coming up each day?



06-10 Transfer Case Motor Encoder (Actuator) part no. 89059551
TCCM is usually not the culprit in this case and is 2nd to be replaced if the encoder does not work.



The encoder is located at the rear of the tranx case and will need a gasket from what I've been able to ascertain.


The price is typically between $100-200

 

[Burtor]

Yup, 2nd'd on the actuator.
That's pretty much what mine did too when it went bad.
It's a pretty easy fix, maybe 4 bolts total.

Let us know what you find!

 

[Jack_M]

Thanks Guys!! I really appreciate the help! Looks like I will be replacing the unit when I get home.

 

[alrock]

The other thing to check, even though it doesn't match the symptoms, is that the 4x4 switches on the dash are not sticking.

 

[Guerrero]

Another things to ckeck, is the stop lights fuse under the fuse box. If the fuse is shot, you will get a stabilitrack error message and you dont be able to change 4x4 modes.

I repair a hummer h3 of a friend that have some electrical issues on the rear lights because of the exhaust in the trailer lights. The 4x4 system was failing because of that.

Good Luck in your search!

 

[4speedfunk]

Yup...look for wire chafing & corrosion by the rear bumper...

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[Happy Hummer]

Yep, lol that could be too.

 

[alrock]

Yup...look for wire chafing & corrosion by the rear bumper...



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I was just thinking about this for the electrical issues TGL is talking about too.

 

[Jack_M]

I will look at the wiring to make sure but I don't have a trailer hitch setup would it be other wires for me to check as well? Either way thank you all, and I will check everything mentioned!!

 

[4speedfunk]

Yes...pay particular attention to the main wiring harness directly behind the license plate. There is a pinch-welded body seam behind the bumper. This seam likes to rub back & forth, slowly hack-sawing into the wires. I've seen this issue on many H3's, with and without the tow package.


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