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I have a 2010 Chevy Equinox that also is experiencing this "Service Stability Track" problem I'll be driving along and all of a sudden the check engine light will come on, i'll lose engine power and the Stability light will come on. I took it to the chevy dealership and since they could not duplicate the problem they said there was nothing they could fix. Thankfully they didn't charge me but with 8 pages of this problem Chevy has to have a fix for this problem. No one seems to have posted a sure fire cure...
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Not Just Equinox for Sure
My 2010 Silverado took a dump on me driving down the road the other day, Stabilitrak warning, reduced engine power(slow mode), and eventually SES light. I have not made it to get the codes read yet but I suspect its related to the EGR issue many are experiencing here. Although I also suspect it could be a faulty wheel sensor as I did recently service the brakes. I'll post an update as I delve into it.
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My 2 cents
2008 Equinox with about 120,000kms. A few months ago, the Stabiltrak warning issue started WITH service engine light. The code was for the EGR valve. Replaced, and all was good for months. Put the winter tires on with NO tire sensors. Was expecting the tire monitor sensor to come on, but the Stabilitrak warning (in the display) came on and off, instead for about 1 1/2 weeks. Then, boom, one day the tire sensor warning came on with the service engine light and the Stabilitrak warning in the display all at once. Went to the shop, the service engine was a legitimate code for a sticky EGR valve. Cleaned, and all good with no engine warning light or Stabilitrak. That lasted one day and the Stabilitrak display light came on again. No issues with performance like power loss. I was told maybe a wheel speed sensor OR a steering position sensor, but this would be a guess and money to find out. I would actually go this route if this was truly the issue.
Interesting to note, that even though the Stabilitrak display warning states that the Stabilitrak is OFF, it is actually ON. On the snowy weekend, with the Stabilitrak display warning on, we slide a bit while driving, the Stabilitrak warning light flickered as if in use, and then the Stabilitrak display warning disappear for a while. So I have come to the conclusion that it is either a wheel speed sensor or steering position sensor OR the Nox doesn't like wearing snow tires this year. My 2 cents - we really need a fix on this. |
Well that didn't work
Well, all the usual warning and indicator lights came on. That lasted one day. Off to the dealership to let them have their shot at it. I will let everyone know what happened. Probably another big $ bill around x-mas, oh great. Everyone have a happy and safe one - keep the Nox between the ditches.
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Merry x-mas
Just an update. X-mas day, loaded up the Nox with kids, food and present set for a 45 minute trip to grandpas house. What? The stabilitrak warnings and the check engine light gone. Merry x-mas what a good present. OOPPPS.. Now no power, can't even get up the hill on our street. Thanks GM, merry x-mas.
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The plot thicks
just like the puddle on my driveway. Taking the 2008 Equinox for a drive to determine why lose of power. Well, no warning lights, but it was over revving to get up a hill, then it drove fine. Put the old white plate under the engine because it looked like it was leaking something - could be just water too. However no, transmission fluid. Great, more money, but I am wondering if the stabilitrak issue, check engine and the transmission are all related. We will find out tomorrow.
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Maybe the solution
Well, the news is in. It looks like the new EGR valve (not done at the dealership) is sticking, and there are holes in the EGR pipe - that is probably the cause. The puddle of transmission fluid is unrelated. The full cost of repair for both is $1500. Merry xmas from GM.
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Originally Posted by trafficdad
(Post 331407)
Well, the news is in. It looks like the new EGR valve (not done at the dealership) is sticking, and there are holes in the EGR pipe - that is probably the cause. The puddle of transmission fluid is unrelated. The full cost of repair for both is $1500. Merry xmas from GM.
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Hey there, our equinox 2010 did the same thing. We took it in and the guy knew right away. Our key had died. We ordered two more and has been fine. :)
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Stability track light and engine light-just had high pressure fuel pump replaced
Originally Posted by trafficdad
(Post 331407)
Well, the news is in. It looks like the new EGR valve (not done at the dealership) is sticking, and there are holes in the EGR pipe - that is probably the cause. The puddle of transmission fluid is unrelated. The full cost of repair for both is $1500. Merry xmas from GM.
Thanks Jaime |
Update
Everything seems fine after a few days. The transmission leak (i believe it was just lines) was not related to the stabilitrak issue. It was apparently the EGR valve and the EGR pipe. I think the pipe was the key here. The EGR valve work was about $600. The tranny work was $500 then $200 for flush/fill. Got tagged with some required semi-annual maintenance for $60 (generally a brake inspection), add the tax, and there you go. Just amazed that I was charged 2 hours of labor for the EGR valve work since this is sitting right on top of the engine.
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Originally Posted by ruley73
(Post 299029)
In our case, the SS/STC messages and the check engine light were on before replacing the EGR valve in February 2011 at about 61k miles. After replacing the EGR valve (installed a new AC Delco part), the messages seemed to go away.
However, shortly afterwards I discovered I could replicate this same issue in the manner described below; EXCEPT that the check engine light would not come on. If I floor the gas to downshift at about 55-60 MPH and don't let up, at about 90 MPH the Service Stabilitrak/Service Traction Control warnings (no check engine light) will appear just before the transmission shifts into fourth gear. The transmission upshifts harder while the message are on. It is not much harder, but definitely harder than normal. However, after parking and letting the vehicle sit for a few hours, the messages disappear and the transmission shifts fine until the messages are invoked again. By this time the vehicle was out of the 50k mile extended warranty, I didn't think the 5yr/100k mile Powertrain warranty would cover this issue, and I had to exceed the speed limit by a wide margin to replicate it so I never brought it to the dealership so it could be addressed. Within the first couple months we bought it in October 2008 the SS/STCS warnings were appearing so they replaced either the BCM or the EBCM under warranty. I think it was the BCM, but I can't remember which one for sure though. The only other time the warnings have appeared is during really long trips after driving for 100+ miles with the cruise set at 75 MPH (5 MPH above posted limit - the norm for around here). Three of the four wheel hubs & ABS sensors have been replaced (due to worn bearings). I recently cleaned the throttlebody, MAF sensor, and EGR valve. I can still invoke the warnings like I said before, but the wife just took it on a six hour trip and didn't have a problem. I stopped by AutoZone and borrowed their scan tool on a couple different occasions with the messages still on (check engine light was not on). In both cases, the trouble codes I got were: C0561 (confirmed DTC) - indicates that there are no problems in the ABS/TCS system; only that Stabiltrak is disabled P0404 (pending DTC) - EGR valve is not opening or closing in accordance with engine computer (ECM) requests P1779 (pending DTC) - I found a few slightly different interpretations/definitions of this code when researching it. This is going to get complex, but follow along....The definition that actually makes the most sense to me for the Equinox is "Engine Torque Delivered to TCM Signal" in conjunction with "the TCM will default driver requested torque data to 300 N m/221 lb ft." My interpretation is that the ECM is telling the TCM "the engine is currently producing X amount of torque", but the TCM is saying to the ECM "the data I am receiving from my own sources proves the engine can't be producing X amount torque. Since I can't trust what you're telling me, I will assume that the engine is always producing full output [300 N m/221 lb ft torque]. This will ensure that I can still meet your needs by shifting gears when I need to, but the shifts won't be as smooth as they normally are." No, the ECM doesn't have a built-in dynamometer. It is using a programmed algorithm which takes into account information gathered from various sensors to calculate an estimated output value to communicate to the TCM so the TCM can make the transmission shift smoothly. The 3.4L engine produces about 210 lb ft of torque, so I believe the elevated figure of 221 lb ft of torque was probably chosen just to play it safe. So, the order of events is most likely... 1) a malfunctioning EGR valve triggers P0404 which... 2) causes the ECM to send incorrect torque values to the TCM; thus triggering P1779; then... 3)the computer that controls Stabilitrak disables it because it determines that the previously detected faults (P0404 and P1779) may cause Stabilitrak to not function properly; thus triggering C0561 Even with the messages on, I've confirmed that only Stabilitrak is disabled like the DTC says. The Traction Control and ABS features remain fully functional. I'm hardly worried about Stabilitrak being disabled. I'm a lot more annoyed by the warning messages than I am worried about Stabilitrak not working. I've only been able to get Stabilitrak to engage on dry pavement once in the seven years (almost 100k miles) we've owned it anyways. Even then, it was in a large, vacant parking lot with a lot of effort. It has neverengaged when driving it down the road. I'm not trying to downplay Stabilitrak's effectiveness. I'm just saying it is really hard to get it to engage. I hope my explanation makes sense to others and helps people understand what's probably happening. The only part that doesn't add up to me is why the P0404 and P1779 codes are pending and not confirmed. I wonder if there may be an updated ECM or TCM calibration that we don't know about which might correct this issue. Additional input/feedback from experts or techs would be welcomed and appreciated. :) I had pretty much all the above symptoms with my 2007 Equinox (135,000miles on the clock).....Service Stabilitrak/Service Traction Control warnings and check engine light came on one bright sunny morning for no apparent reason. Vehicle drove and handled as per normal. No changes to anything: driving pattern/maintenance/climate etc.. immediately prior to this manifestation. ......searched a hundred plus blogs by means of research (at this point I should point out that I have not been mechanically minded AT ALL for the last 45 years but, as we are stuck in the USVI for a short term with a dearth of even half-decent mechanics or shops that don't ask $50 just to lift the hood!) we had to take matters into our own hands so to speak! First off, after much reference to internet, I decide to get brave and change the EGR valve. Looked an easy job , even for me. So got one online from Rock Auto........it turned up in good time BUT was (despite website and invoice saying the Dorman product was of 'Origin in USA") made in China and didn't fit properly. Returned it with no problem; good site despite this hiccup. Got a replacement genuine GM part. Problem still existed though. Then mech hunted down and dragged a 'friendly' mech with a major set of decoder devices to analyse the computer. Got C0561/P1779/P0404. Codes all diagnosed as results above. Odd given EGR replacement, but hey what do I know. My 'friendly' mech then suggested that a fault in the main 80 amp fuse could produce these results; looked on web saw these going for $23 upwards, hunted round locally and (still my beating heart!) without a great deal of optimism after trying 4 other local autopart outlets decided to drop by the local GM dealer just for a laugh. Expected to be royally stiffed BUT got the last one (yep the last one until the next container ship of parts turns up in 2 months!) for just $13!!! Raced home, well sort of given the roads here, to fit the fuse..........fitted.......no change in lights/code. Ditched the 'friendly mech' and read chevy blogs online some more, well for almost 24 hours.......... Boy are there a ton, hundreds/thousands of owners suffering from similar problems and getting massively stiffed by Chevy dealers who deny there is a recognised issue!!! The most sensible course of action (and coincidentally the cheapest!) as recommended on here was to buy some Chevron Techtron Fuel System Concentrate and ALSO (significant!!!) some throttle body cleaner. Given our current location, probable dirty fuel/burn, my gut warmed to this as a solution. Next day (today, 7th March 2017 in fact) $18 lighter and armed with these 2 cans of 'elixir' I attacked the problem. Obviously the Techtron 'might' take ages to resolve any problems, so I moved on to the TBC. Heavens decide to open so had to do this in a tropical downpour.........nonetheless it was a very simple and easy job for even a novice like me! My dearly beloved had to interact by depressing the throttle pedal to allow me to clean the gunk off the butterfly valve in the throttle body.......... man there was some real 'crap' in there, looked like dark treacle.........but with the aid of an old toothbrush we got most of it cleaned. The moment of truth..........turned on the ignition, fired it up....................NO lights!!! Let the idle settle and sort itself out with the onboard computer settings for 5 minutes to............then turned it off. The second moment of truth.......back on no lights................... hallelujah! Still not wanting to believe my layman's luck, I drove off for 20 minutes, parked, stopped, engine off, engine on, no lights! Repeated process........all still good.......... will only report back if it all goes pear shaped (https://en.wikipedia.org/wiki/Pear-shaped). So.........in summation, check your throttle body out first!!!! Well worth a shot. With much thanks to all who have contributed either directly or indirectly to me solving this.............thanks guys/gals and shame on GM/Chevy! |
stab trac warning
did u change the egr valve hose as well? I changed valve only and after 2 weeeks it came on sgain
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Originally Posted by Shelley Kostner
(Post 337604)
did u change the egr valve hose as well? I changed valve only and after 2 weeks it came on sgain
.......but I do know that this is such a random problem (mine was kicking on/off for almost 3 years without any other symptoms/failures despite intensive diagnosis (at a price!) by people who would survive in a tank full of sharks!)... so my advice is clean it up and leave alone..............and if all else seems/looks/feels ok with your Nox then there probably isn't any major problem other than (of course) faulty/crap Chevy OB computers, sorry but true. Best of luck! |
Did you ever get it fixed and how/what did you do?
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Originally Posted by ruley73
(Post 220961)
you'll need to drive it a lot more to see if the egr valve is fixed. I tried to clean the egr valve in ours, but i ended up replacing it because the ses light returned after driving it a while. A new egr valve and gasket (ac-delco p/n 214-2098 + felpro p/n 70804) is only about $75 shipped from rockauto. I replaced it almost 2 years ago and haven't had a problem since. Replacing the egr valve also stopped the service traction control and service stabilitrak warnings from coming on.
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p0404 & P0405 after towing small Uhaul trailer.
Hello,
I was recently towing a small Uhaul with my 2007 Equinox and had the Stabilitrak error message come on and codes p0404 and p0405 come on. I replaced the EGR valve and reset the computer and cleared the codes, but the codes appear again. Any idea what step I should take next? Thanks and blessings, Jake |
Originally Posted by Jake Burton
(Post 369279)
Hello,
I was recently towing a small Uhaul with my 2007 Equinox and had the Stabilitrak error message come on and codes p0404 and p0405 come on. I replaced the EGR valve and reset the computer and cleared the codes, but the codes appear again. Any idea what step I should take next? Thanks and blessings, Jake |
Originally Posted by Jake Burton
(Post 369279)
Hello,
I was recently towing a small Uhaul with my 2007 Equinox and had the Stabilitrak error message come on and codes p0404 and p0405 come on. I replaced the EGR valve and reset the computer and cleared the codes, but the codes appear again. Any idea what step I should take next? Thanks and blessings, Jake You can check the wiring and make sure there's no damage. The way the EGR valve's wiring harness is routed from the factory puts a lot of stress on the wires. It comes up from under the air intake hose which requires the wires to make sharp bend to plug into the EGR valve). I have re-routed the pigtail without any modifications so it now goes up and over the throttlebody, then plugs straight into the EGR valve. This alternate wiring path eliminates the sharp bend and doesn't put any stress on the wires. Each vehicle will vary a little bit, but there is just enough extra slack on ours to make this feasible. I have also suspected for a long time that there is a glitch in the ECM's programming for EGR valve modulation in the 2005-2009 Equinox 3.4L that GM has never addressed. The exact same EGR valve is used in other GM applications with a far lower failure rate. Our Equinox is on it's third EGR valve. |
did your avalnache loose power when your light came on. and did it shift rough into 2nd gear.
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Originally Posted by milehighmark
(Post 259848)
they engine an stabilitrac came on in my avalanche my mechanic checked it out, all it was was a vacuum leak
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Service stabillitrak traction light on flashing check engine light
We have a 2012 Chevy equinox ltz and service stabillitrak traction light flashing check engine light and running very rough. Just all of a sudden happened. Any suggestions on diagnosis.
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Traction Control problem and Engine Light
Originally Posted by lvbrown@liberty.edu
(Post 290063)
File your safety complaint about GM's starting/ignition/Stabilitrak/reduced power problems at https://www-odi.nhtsa.dot.gov/ivoq/ - If GM won't acknowledge problems, maybe NHTSA can "help them" acknowledge them...
Had to take it in to the dealership as the Traction Control Light would come on reducing my speed to 40 kilometres per hour, and as well the engine light came on. The dealership scanned the vehicle and concluded that the sensor in the gas pedal was defective and replaced the accelerator pedal assembly. i mentioned that my problem had lasted about 3 days and the last 2 days before it was brought in I had no problems. It has only been about 3 days since the sensor replacement and no problems so far. I am hoping this ordeal is over with. Kinda pissed with GM as I was not covered under warranty and I feel that the sensor should have lasted longer. Aside from that there is the safety factor that’s involved when your on a busy highway and your speed is immediately reduced. GM. - Where’s your brains ? There should be a recall on this matter ! I’m still not sure if it is fixed - time will tell. I would like to by another GM vehicle but the outcome of this matter will certainly decide my future purchase! |
Traction Control problem and Engine Light
We have an 2010 Equinox LTZ with the V6 and it was a good vehicle up until this past year. The Check engine light came on along with the Traction system light. We also noticed it was running a little rough now and then and appeared to have intermittent issues shifting when going down large hills. The quick work around for the shifting was to shift into Neutral then back into Drive.
Now I understand its 10/11 years old now but it's garage kept and my wife doesn't run it hard. It only has about 93k miles on it. As for the Check engine light and traction light the local garage checked the codes and found O2 sensor issues and some other codes that pointed them to a fuel regulator or some type up under the hood. They said it was dumping excess fuel down into the engine. We had that changed and the codes cleared and the car appeared to run well for a week then the check engine light came back on and was occasionally running rough. Now we live in Western PA and it's winter so it does get a little cold. After doing a ton of research and reading this entire Thread (along with some others) I decided to inspect and re-seat all the sensor connections as well as the ECM connections. I also ran a quarter of a can of Intake cleaner through the throttle body while the car was idling. Low an behold the indicator lights turned off, the codes cleared, and 1 day later none of them have come back. Also the vehicle is driving and behaving as I would expect. Now I know a lot of people have talked about the Dielectric grease but I didn't go that route because technically it is an insulator so I'm not sure I want to hinder my electrical connections any more than they already are. I didn't see any corrosion on any of the sensor connections so I'm going to stay away from that option for now. I'll keep you all posted. |
2015 chevy equinox power reduced
2015 equinox power reduced
Message and throttle bottle and high pressure fuel pump replaced. Cam position sensor also replaced. Still same issue. Choppy ideal and won't drive over 30 mph. I'm a mechanic and lost. P228d is the code it's showing |
I also had the dreaded EGR valve code. Ordered one on RockAuto and replaced it and code went away. So far so good. Noticed that the aftermarket EGR valve hose was made of a thinner gauge metal and when bending it to fit the hose nearly kinked and collapsed. Afterwards was told by a mechanic to always order Delco OE parts when possible. Just like the old saying " You get what you pay for".
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Originally Posted by bearbait
(Post 472264)
I also had the dreaded EGR valve code. Ordered one on RockAuto and replaced it and code went away. So far so good. Noticed that the aftermarket EGR valve hose was made of a thinner gauge metal and when bending it to fit the hose nearly kinked and collapsed. Afterwards was told by a mechanic to always order Delco OE parts when possible. Just like the old saying " You get what you pay for".
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It is a 2008 Equinox V-6 FWD
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I've have my s*** 2002 Chevy equinox reduced power I it throttles fine it idles fine but whenever I put it in gear it won't the RPMs won't go past two RPMs and I put it in gear and it it goes real slow and then it stops it dies out but idle is fine I just don't know what to do.
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