What other things should I do when it's not the Transfer Case Motor Encoder actuator?

[Happy Hummer]

06 H3 134k

Back about 2 yrs. ago we replaced the Transfer Case Motor Encoder (Actuator) part no. 89059551,(89059688),19300596. This was a Remand Transfer Case Motor Encoder (Actuator) from Auto zone.
Also seal: 19209788

Having "Service Stabil Trac" warnings coming up yet again (the past two months) we once again changed the Miss's encoder motor on Saturday 03/03/18 with a brand new AC Delco.

Problem, it didn't get rid of the messages... I got a text this morning that the error was back and she was not happy.
So, help save a life. Because I think she may actually be thinking of bad, bad things for me.... LOL! :giggle:


I kinda doubt that both would throw the same error.:no:

What other things should I do next to figure out this problem?:emb:

 

[Happy Hummer]

She is getting a bit ... Well you know!
Any insight?
There obviously are no actual codes displayed as I would need a different kind of reader.

 

[cgalpha08]

Have you tried the ABS sensors? not sure if that would show an abs only specific fault or could cause the error you're getting as well.

 

[amrg]

You need a tech 2 to pull codes from other modules. I found out when I had a fuel related issue (i needed to pull it using tech 2 from the fuel pump control module FPCM which was apparently requesting the check engine light). This could help you see codes a normal code reader cant pull.

Sent from my SM-G920F using Tapatalk

 

[Happy Hummer]

Yeah, that's kinda what I'm wondering. It may be necessary this time to have the codes pulled.

 

[08H3]

Some "cheap" readers can pull ABS codes. My Innova can. Either way, get the codes before you just start throwing parts and money at it. Good luck!

 

[Happy Hummer]

I'm wondering if this will better assist me in my testing...?

https://www.harborfreight.com/autom...2-code-reader-with-abssrsfixassist-63806.html

It is a pretty advanced tool.

 

[Mr_Rich]

I'm wondering if this will better assist me in my testing...?

https://www.harborfreight.com/autom...2-code-reader-with-abssrsfixassist-63806.html

It is a pretty advanced tool.

I don't have that particular reader, but I do have one of the other HF readers that will read ABS codes on my truck. The one restriction on that is that the reader won't recognize "Hummer". What I have done when I got a spurious ABS code is punch in 2009 Chev Trailblazer and it will read the code. That's my workaround and give it a try just in case you have a problem as well.

 

[4speedfunk]

Not sure how an encoder motor would trigger a Stabilitrac warning unless the t-case gets stuck in 4-Lo. That’s the only relationship it has to the Stabilitrac system.

There are many other parts that would be more likely to trigger this warning...hubs, wheel speed sensors, VSS, steering wheel position sensor, or just plain bad battery cables, to name a few. You need a code to diagnose it. Bad wheel speed sensor wires are the most common. If your steering wheel is crooked or you’ve recently had the rack worked on...that can cause it too.

 

[Happy Hummer]

Nope. No recent rack work.

The odd thing after installing the new encoder motor the system behaved flawlessly but it was a pleasant, calm warmish day. Monday morning was cool and she once again received the same error msg. Also, when it's cold, wet or snowy the msg comes on in the DIC.
It goes out after a few pleasant calm warmish days. Odd!!!

 

[Happy Hummer]

Also,

The three button hi/hi lock/lo lock all switch back and forth but the error msg comes right back within a short time. "service stabilatrac" etc... in the DIC.

The lights on the control are working.

And when hi lock or lo lock are active msg. in DIC is cleared.

 

[JPaul]

Is water getting onto the BCM? Not sure if that could be the cause but probably worth a look.

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[Traxx]

You can pick up the Tech2 clones for around 350. Def a worthwhile investment if keeping your rig for the long haul. I had a similar problem, was just an abs sensor wire in the rear that rubbed through.

 

[Happy Hummer]

Is water getting onto the BCM? Not sure if that could be the cause but probably worth a look.

Sent from my SM-N950U using Tapatalk

Have made absolutely certain that all drains are functional. Oh, probably 2-4 years ago. I clean them yearly as preventative maintenance.

 

[Happy Hummer]

Anyone know if the AutoZone reader is capable of finding abs errors???

If they do I could save some cash and time as they do free code pull.

 

[Happy Hummer]

Ran a basic level obdii scan tonight nothing. Tommorow we will get an in-depth scan completed at AutoZone with there bigger scan tool.
Hoping they will be able to figure it out.

 

[Happy Hummer]

If not I'll have to get to the stealer ship for a proctologist exam.

 

[Bruces]

I bought an actron autoscanner plus model cp9580a from parts store a couple years ago fairly cheap. It reads abs, transfer, eng and OBD/EOBD codes and clear all codes.

nice thing about this one is it will give you all the live data and log it for you.

 

[Happy Hummer]

Well today went AutoZone and rented a very nice scan tool/code reader.
Innova 3160 is similar to the one rented but the newer model could do even more tests and stuff.




https://www.autozone.com/test-scan-...ader/innova-scan-tool-with-abs-srs/237646_0_0






Ran a slew of test and was unable to find one thing out of place. Yet lol the DIC displayed the msg. while testing commenced.


With this tool I was able to view/scan a bunch of things and test abs, srs, obd, o2s, dtc, evap, battery, charging,etc... It found everything I would want but not any faults.


What next????

 

[Happy Hummer]

Good news all the other stuff tested came off with good results.

 

[Happy Hummer]

Still have zero ways of figuring out what is at fault here. No codes show even after running a better reader.

 

[JPaul]

You really should just go to a dealer or a mechanic shop that has a Tech2 and have them check it. At this point the amount of time you've spent trying other methods is adding up and you're better off paying someone to tell you more exactly what is wrong. It could be the encoder, it could be wheel speed sensors possibly, or maybe even just a short in a wire somewhere. You won't really have a good idea unless you start checking everything on the truck or just take to someone with a Tech2.

 

[Happy Hummer]

Appreciate but lol we have a few hours and a new encoder motor actuator from ACDELCO.
I've done the tool loan program from AutoZone so that cost zero. At some point I'll be testing the rear wheel sensors to ohm them and check specs.

Tonight we noticed that there were no lights on the push buttons but we barely touched the normal 4wd button and the lights were lit up again. So, that's kinda weird.

 

[Happy Hummer]

At some point I might break down and just purchase a tech2 or have a buddy at dealer do itbut.....