stab system light came on today (failure) check 4wd

[bsfh3]

2006 H3. I have been having a problem with lights coming on. I had it towed to the dealer and @11k miles. They replaced the brake switch. The light came on, at 17k, the ebcm needed to be replaced. At 25k miles, another ebcm needed, once again at 29k master was ordered. The dealership closed and I couldn't get the part installed until it happened again at the new dealer. It finally came back on and the dealer said to resurface rotors? I didn't really understand why because I had the brakes done only @10k miles back. I was told we have to follow procedure, and the service advisor told me that they found the brake problem (kinda by accident). Turns out contamination of brake fluid from factory they believe. The brakes lines were bulging, broken inside near connector. Parts have to be located now, I am just mad that I bring it in all the time, on time, for service and concerns. Now they notice this after all this time? I need this posted just to make people aware. Thank goodness nothing happened, I always have my young child in this car. I have been nervous driving it because of the concerns, now I am afraid. I was told all the parts which have plastic on it are getting replaced. Shouldn't everything? Will this totally correct the problem? Please help. Regional manager told me that they have to search for parts because my car is not the only one with this concern!!! Check the brake lines for contaminated fluid..!!!!!!!!!!!!!!!!!!!

[trail humper]

Fishnman, how many times has this happened to your h3, I have had it once. Low tire mess, came on once when temp dropped, but tire press. ok. I read about that on some other threads.

[UNOMYFLO]

Is your inermittent?

Mine hasn't done it since this a.m.

I am hoping it is gone for good but now I catch myself waiting for it to pop upon the dash.

[Crisco]

I had this exact same problem a few weeks ago, took it to the dealer and they replaced the actuator assembly. No problem since.

[Yarjammer]

Looks like I am waaaay late to the party...

I have had pretty much the same experience as recorded above with the intermittant failures. I just bought my '06 w/ ~12k miles less than two weeks ago and I am fairly certain the factory warranty is gone; how much is this going to set me back to get fixed? Can I order the part and do it myself?

Thanks for your help guys. I want to have my ducks in a row before I talk to the Hummer service dept.

[Mark805]

Great story man!! I'm glad it got resolved.

[f5fstop]

<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by UNOMYFLO:
so let me get ths straight there arer 3 pieces to this system?

the TCCM transfercase control module located under the pass side kick panel.


the encoder motor or actuator located on the back of the t-case under the shield

and lastly the encoder module? where is that located?

I want to get a handle on this so I can check the system thouraghly as far as the connections go.

thnx </div></BLOCKQUOTE>

My mistake, I mentioned encoder module, but meant to say encouder motor. We are talking about two parts, the TCCM in the I/P, and the encoder motor (also called an actuator) mounted to the rear of the case.

[Mark805]

same thing happened to me when I was speeding along.. I took a right turn and hit a bump.. warning lights came on and all that jazz.

Simple restart cleared it tho. I took it to the dealership a few weeks later and they said there was no history in the system or some such nonsense.

Next time I'll stab the onstar button for good measure.

[UNOMYFLO]

also this isnt a saftey issue at all it basically makes you stability system useless and your 4wd non functional.

Mine is intermittent it will fail 1 day and work the entire next day. I have actuall cancelled 1 appt at the dealer due to the fact that it started to work again only to get in the truck to find it failed again...get it to the dealer and get it fixed.

I am in a warm climate but if you were to be wheeling in the snow in the middle of nowhere or commuting in the snow where the 4wd was a necessity and it failed you would be screwed.

I bet there will be a recall on this but I cant be sure I guess it depend on what percentage of encoder motors fail in the field. From this post I see several but all in all there arent like 100 people chiming in saying they have the same problem...It was actually nice to hear y tech say he has done 3 others though...finally I am not the first one which I seem to be in a lot of issues in life....ya know...man your the first person to hae this problem? I get that a lot. I like the tech he is straight forward and honest and doesnt bs me. I could care less if there is a problem with the encoders I just want it fixed. I think by them telling you you ae the first they think they are keeping your faith in the vehicle. I personally want the truth. The techs are up front the service managers IMO try to BS you. they should know like the tecks do how many of what they have fixed...

I still love my H3 and realize on a first year vehicle there will be some problems.

this is my list to date:

1) onstar never worked from day 1 new module fixed it
2) washer pump motor
3) needs a new serp belt
4) needs a new encoder motor and re cal of the TCCM


Hopefully this will be it.

M

[UNOMYFLO]

Well that is great info and thank you. I have made a note of it.

Last night the same errors stayed on no matter how many times I re-started the truck.

This am no errors at all annd all the stab and 4wd buttons worked. Stopped at the store on the way to work and when I got back in the H3 BAm same errors. Parked it at work went inside and after I buttoned up some work on my desk I went and signed up for the onstar vehicle diagnostic service. It told me the report would arrive via email within 24 hrs and being impatient as I am I went to the truck to dial onstar to get it right then...well the blue button on the rearview did nothing?????? I hit the emergency button and got through...they transfered me to the tech side and she ran an update for the cellular service directly to my vehicle it took 10min.... I then had to get back inside to make a living,,,,but while on hold and the truck was running there were no errors or lights on and I cycled the 4wd and the trac control several times and it all worked??

VERY STARNGE definatelly intermittent.....not sure what the deal is..... perhaps condensation in the plug attached perhaps the t-case module as you mentioned.

BUT what leads me more is what F5fstop said and perhaps the brake light switch out of adjustment....my gut tells me this is it. I am waiting for F5fstop to perhaps direct me on the proper adjustment procedure as I might try it myself to try to avoid the 3+ hr round trip to the dealer. with 2 toddlers at home and a stay at home working from home mom geting there can be a nightmayer.....

Thank for the part number...at lunch I am going to dial onstar and get a code if one is available which will also probably be dependant on weather the light and errors are displayed or not, if they are I will see if a code is available and perhaps that can help me hone in on the problem...shoot if the dealer was 10min from me I wouldnt give a damn but I am trying to rule out the simple stuff...not professing to be a Hummer Tech, but my dad has his own repair shop for 30+ years and I have done 4 full ground up restos on various old school 4x4's.
I really want to do the brake switch adjustment F5fstop standing by my brother..: > )


Oh also I have the K&N new oil filter and 6 qts of Castrol syntec 10w 30 oil once the oil and filter change is done what is the procedure of resetting the oil life deal? F5fstop is this somethng the dealer has to do or can the user (me) do it after the oil change...?

Thanx to all this site is a great resource.

Mike

[UNOMYFLO]

pulling into my driveway at 10mph the light came on in my dash(the car with the skid marks under it) and scrolling text says check stab system and 4wd. All of the dash switches controlling the locker 4wd and traction control are non-functional...wtf?

just turned over 2500 miles.

anyone else had the exact same dash light and the scrolling text? what wa the fix?

I callled the dealer 1.5hrs away and they said it probably threw a flase code and it needed to be cleared with the tech 2 programmer..1min of work for a 3 hr round trip drive....colsest Hummer dealer to me.

Last time it was the onstar module that was bad out of the box got it replaced and now all is well with it...now this I still love the truck but what a pia getting this stuff looked at being so far away.

anyone got a link to purchae a tech 2?

how much are they probably real pricy I'm sure.

I dis-connected the neg batt term to see if possibly it would clear the code and no luck.


let me know what others had done to fix it.

again traction control light on and the text says stab sys failure check 4wd....all related switches non-functional.....ughhhhh

thnx..

[UNOMYFLO]

I just got off the phone with the tech I have uesd before and spoke with at the dealer. First off he said this is becoming more prevelant and GM knows about it. The initial fix sent from GM was to swap out the TCCM Module right off...well they realized that wasnt the fix as all the returned TCCM's to the manufacturer checked out ok. So now GM has done a backorder on the TCCM and is saying to replace the encoder motor assy which is mounted on the back of the xfer case. He said rather than admit they pointed the techs in the wrong direction with the initial fix they just put the TCCM's on backorder which isnt the problem anyway, it just eliminates techs from continuing to order them. Now as I understand it the encoder motors are hard to get. I actually had the service/parts dept. order one for my scheduled warantee service on the stab failure check 4wd deal going on now. He had no problem doing this as he said he likes to keep on in stock anyhow even if it wasnt the problem (which now I know it is) he said he would shelf it. Glad I had them order it..but get this I called this am to check the status and they said it came in last wed and another tech pulled it and used it on another clients car with the exact smae symptoms as mine.......(((((think this is a common problem??))))) I say yes.

The reason I ordered one is thanks to this forum I had a feeling this was the problem and didnt want to take a 4hr round trip just so they could tell me it was the problem and the part had to be ordered andhave to come back again..normal procedure....I pushed the envelope and it worked...if I were closer to the dealer I would not have done this.

Anyhow they are overnighting another one and or doing another spat case on the part which is an overnight order anyhow...so I should be good to go for sat service. I also told them I want the TCCM cleared and re-programmed which is there discretion but I requested it. Plus I told them I want the rear washer pump recall fixed and I also want the pullys cleaned and the serpentine belt tensioner bolt checked for the proper torque and the serpentine belt replaced to stop the cold start rattle I have had for the past 2 months. I have to drive 2hrs each way to the dealer so I am getting my ducks in a row to get it all fixed once and for all.
I will keep you all posted on the work done on sat I have an appt at 9am in Hacksonville Fla.

Thanks Mike.

and on the last post my feeling is if it did it once it will probably rear its head again it shouldnt have come on no matter what gear you were in period...it is probbaly the encoder motor.....get it to the dealer.

Mike

[UNOMYFLO]

so let me get ths straight there arer 3 pieces to this system?

the TCCM transfercase control module located under the pass side kick panel.


the encoder motor or actuator located on the back of the t-case under the shield

and lastly the encoder module? where is that located?

I want to get a handle on this so I can check the system thouraghly as far as the connections go.

thnx

[SDH3]

I have to agree with UNO... I'm the guy that gave you the encoder motor part #. My truck was 4 weeks old when those 4x and stab... service messages came on, and always on morning startup, but they would go off after a re-start. The 4th time the messages would not go away at all, so I took in to the dealer. Told the service rep I heard there are problems with the TCCM (tranfer case control module) he said they would check it out, but the first thing the tech looked at was the encoder motor and it was bad and TCCM was OK. I guess they are having a problem with these, and I would'nt hesitate taking it to the dealer and have them check the encoder motor if you're having these messages. I live in a warm climate but snow in the mtns. is a couple hours away. I sure would have hated to be stuck up there with a new H3.

[UNOMYFLO]

I almost forgot to tell all of you aparently this has been a problem part on the H2's as well..and no it isnt the same part number.
It functions the same but is a totally different part number.

When I first talked to the service parts guy he told me about the encoder because he has ordered them for the H2's. I wonder if they are made by the same manu for the H3 and H2's I read somewhere earlier on this thread that there is an optical sight in them that goes bad.

This encoder tells the xfer which range to be in. 4wd hi low or neutral or 2wd. But when it fails make all functions useless except 2wd.

If you crawl under the drive side of the H3 and look at the back of the tcase you will see it hanging of the back/side.

M

[f5fstop]

You have a PM. It could be something as simple as the brake light switch out of alingment, or it could be a complete failure of the ABS/TC system (part of the stabil system). Complete failures are very low, this type of system has been around for years, however, it is man made.
And yes, it could be the Tcase control module (TCCM).

[Trinity]

Had the same thing happen with about 500 miles on mine after pulling into a gas station. On Star didn't detect anything. Brought to dealer and they replaced the Transfer Case Module. They kept the H3 overnight as they didn't have the part, but they did give me a loaner to use.

[evomind]

sounds like the problem im having....
hope they find a part if it is