Question about Chevrolet Equinox

3 Answers

My 2006 Chevy Equinox has problem with ABS and Traction control lights on, and as vehicle brakes to a stop, the ABS kicks in and the vehicle does not brake - sometimes scary as you nearly rear-end the person in front of you. The diagnostic tester indicates front left wheel bearing - always. But the gargae has replaced both front wheel bearings (with speed sensors) twice each. Also, the ABS control module was replaced, and the struts were replace, and we rotated the tires. All of this over about 7 trips to the garage over the last 5 months as the problem would disappear, only to reappear a couple weeks later. The problem returns intermittently, and gets progressively worse over the course of a couple weeks, until the ABS and TC lights are on 100% of the time. I think that somehow, just disassembling everything and re-assembling did more than any of the actual parts replacements to temporarily relieve the problem. I see this problem is described all over many Web sites on the Internet, but nobody seems to grasp the that this is a problem that is not easily fixed - and the usual answer is "check speed sensor". This problem seems so widespread on the Internet, even affecting the older Blazer, that I can't believe GM hasn't addressed it and at least figured out why and how to fix it - at least not that I can find. Does anybody know more

Posted by on

  • 2 more comments 
  • lduvall000 Oct 10, 2010

    That doesn't explain why the problem disappears for a couple weeks after each supposed fix that we did. Then it re-appeared gradually, getting progressively worse over a couple week period, until it was as bad as it ever was before the 'fix'. That is not the behavior of a wiring problem.

  • lduvall000 Oct 10, 2010

    I understand your logic about it being the only thing left, and I'll probably have to try it if only to rule it out like I've now done with every other possible part. But a visual inspection showed no issue with the wiring.

    As for the wire getting back together, and then failing, what I meant was that it always seemed to be ok for a week or so after one of the repairs. Then it would fail intermittently, and rarely at first. Then it would fail more frequently as time went on until it is failed 100% of the time. Once it gets to that point, it stays there - 100% of the time failed. the way it fails is so predictable and over the same time period every time. That is not how a corroded wire would act 6 or 7 times as we replaced parts over the past 5 months. You would think that it would just fail and stay failed - at least sometimes. A bad connection wouldn't be so predictable.

    I guess I was looking for something new. Something I hadn't thought of. Something out of left field - like mismatched tire tread can lead to an error code that points to the front left hub, or something goofy like that.

  • lduvall000 Oct 10, 2010

    I keep trying to explain - the problem is only intermittent while it is failing. It gets less and less intermittent over a two week period until it is failed 100% of the time - which is not intermittent at all. That is why I keep trying the explain why it diesn't act like a traditional wire problem. If you are correct, then I would be able to test the wire once it is in a failed state - because it is never intermittent once it fails. Unless I replace a part - then it is perfectly fine for two weeks. Then the process starts over. See why it is so different? Thanks for your help

  • lduvall000 Oct 10, 2010

    Thank you for your input. It makes a lot of sense. I will take the advice i have gotten on this site and replace the connectors/harness. I appreciate the time and thought that both responders put into my question.



3 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Chevrolet Master
  • 1,871 Answers

Hello! Since the fault is affected by disassembling then re-assembling I strongly suspect a faulty connector...A loose or bent pin, poor crimp, broken wire inside it's sheath or harness that is damaged by a tight bend...The wiring involved are cable runs from the speed sensors to the Electronic Brake Control Module (EBCM)...This is a very difficult fault to locate...Since it is occurring on many vehicles, It more than likely is a harness that is to tight; Especially around a solid object...A visual inspection of the involved harness run especially at connection points should be done...The speed sensor connectors at the wheel hubs (especially the front) are the most suspect...I would replace all four connectors...Here is a picture of the connector...AC Delco part # PT786...Cost $25

My 2006 Chevy Equinox has - 680bc22.jpg

At the EBCM a 30 pin connector receives sensor signals on pins 1,3,4,5,6,7,8, and 9...

Look for loose pins, poor crimps, or damaged wires...Guru....Saailer

Posted on Oct 10, 2010

  • David Burbee
    David Burbee Oct 10, 2010

    Hello! Additional comment...When you disconnect a connector the cable harness is pulled, or manipulated to some degree...And it's "memory"(physical location) is changed...Once reconnected, It will eventually return to it's original position due to the rigors of driving...If a fault is in that cable run it will return over time...This is a classic "affected by time" problem...This is why I suspect the speed sensor connectors at the wheel hub...With the front most suspect...Inspect those front connectors and cable runs...Solder splicing in new connectors up front is an inexpensive fix (approx. $50)...



  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Most mechanics do not think this far a head as the problem can be caused multiple things.
The most common is the wheel bearings wear out causing the break sensor to touch the hub causing the sensor to error out.
If it happens to one bearing the rest are going to be bad soon. So fix them all.
The good thing is the fix is relatively easy. The bad thing is the parts are a little pricey.
You'll have to replace all the wheel hubs to fix the problem.
Here is another part that also requires attention and repairs to fix the ABS errors. If any of the other parts in the suspension are worn it will affect the rotation of the wheel and sensors, mostly when breaking. Example: if the front struts are worn out or have lost the gas charge the wheel will have some "chatter" when breaking. It may not be noticeable to the driver or you may not feel it in the steering wheel. However, the wheel sensor picks this up as loss of traction. So, if you replaced the hubs and you are still having the same issue, replacing the struts along with the wheel hub could fix the problem. Have your mechanic look at the rest of the suspension parts to ensure there are not any issues.
Another benefit to repairing the worn suspension parts is your vehicle will drive nicer and will be much safer to drive.
As you were told when you were a kid, "pay attention

Posted on Jul 05, 2014

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 1,297 Answers

Since the sensor and module were replaced that means that the only thing left is the wires from the sensor to the module

seen multiple failures here do to road damage

the "official" fix is to replace the front harness but that is expensive

what I would do is to overlay the wires from the sensor to the module


Posted on Oct 10, 2010

  • Sean Reisdorf
    Sean Reisdorf Oct 10, 2010

    sure it does... if its a wire a problem and you touched the wires to make the repair then the concern is gone

    it is not difficult to understand further because 2 of the three parts have already been replaced

    Wires are fickle and "shorts" are why I make the money I do as a driveability technician because most techs cannot THINK of anything else but replacing parts

  • Sean Reisdorf
    Sean Reisdorf Oct 10, 2010

    To test, you need to load test the circuit since the inspection you did is just a visual
    unless you x-ray the wire you cannot tell what is going on inside

    however, since the concern is so intermittent and everything has already been replaced doing anything other than replacing the wires from the sensor to the module trying to load test the wires would likely provide vague results


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Abslight stays on. How to fix? This is a2007trailblazer?

First you need to have EBCM - electronic brake control module check for DTC'S - diagnostic trouble code's . If the light is on there is a code stored . I think most part stores can do this and for free . After you find out what code is stored , looking up that code in service repair information for diagnostic trouble shooting chart would be next step . There are a few codes too.
DTC C0035 or C0040
DTC C0045 or C0050
DTC C0110
DTC C0131
DTC C0161
DTC C0186
DTC C0196
DTC C0201
DTC C0240
DTC C0241 or P0856
DTC C0244 or P1689
DTC C0245
DTC C0283
DTC C0287
DTC C0290 or C0292
DTC C0455
DTC C0550
DTC C0558

Find the code do the diagnostic's , fix the problem , wiring issue's , a sensor , bad module ,what ever it is . The light will go out then . Here is a sample of code discription .
• DTC C0035 Left Front Wheel Speed Sensor Circuit
• DTC C0040 Right Front Wheel Speed Sensor Circuit

Dec 30, 2016 | 2007 Chevrolet Trailblazer

2 Answers

ABS & Traction control light are on, what is causing this?

About 39,700,000 results (0.44 seconds) Search Results

    Traction Control Light is on Inspection - YourMechanic > Auto Repair and Maintenance Services
    As a result, sometimes an issue in the ABS can trigger the traction control light. If this is the case, then both the ABS and Traction Control lights will be on.

    My anti-lock brakes and service traction control lights came on ...
    Oct 16, 2006 - I drive a 2000 chevy impala...i have 135,000 miles on my car. ... The problem is that starting in '92, Anti-Lock Brakes are controled electronically, so if there is a problem with the sensor, your ABS might fail when you need them the most. ...ABS (?nti-lock Brake System) is a ...

    How To Fix ABS & Traction OFF / Service Traction System ...

    ? 5:35
    Feb 17, 2014 - Uploaded by Zero Gar
    How To Fix ABS & Traction OFF / Service Traction SystemLight Monte ... side connector that leads from the ABS controlmodule to the speed ...

Feb 05, 2016 | Cars & Trucks

1 Answer

I had a problem with power steering leak . They changed the hoses and pump and reservoir and rack. Now I have stabilitytrac control light on and when you are stopped you can't turn the steering wheel.

Service Stabilitrak, Traction Control lights ON, alone with check ... > ... > Equinox
Jul 9, 2012 - I have a 08 Equinox with 79000 miles on it, for the last few weeks or soI've been having the service traction control/ service stabilitrak light ... HELP - Service Stabilitrak & Service Traction Control - Chevrolet ...
Aug 30, 2011
Service Traction Control - Stabilitrak and ABS light, Help ...
Feb 12, 2011
More results from

How To COMPLETELY Disable Traction/Stabilitrack Control ...

? 6:16
Jul 7, 2013 - Uploaded by Kyle Riegle
How to completely disable traction control on gm/chevy trucks and suv's. ... I got to anaheim the light of the ...

Has anyone ever had the service stabilitrak, service traction ...

Dec 05, 2015 | Cars & Trucks

2 Answers

Chevy equinox 2006 Brakes Grinding, Pulsating, and Resisting

You did not mention rotors but that could be the source of the grinding. The pulsating probably is traceable to your ABS and traction control syatems

Apr 10, 2013 | 2006 Chevrolet Equinox

1 Answer

Replaced abs traction control sensor on 2006 pontiac torrant when i brake fill's like traction control kick's in right before i come to a complete stop make's a grinding sound or some sort

look on the front axles for the ring with teeth look between the teeth for cracks rust forms behind the ring and the rust expands and cracks the ring the crack then sends the wrong speed signal to the brake module

Sep 02, 2012 | 2006 Pontiac Torrent

2 Answers

2006 chevy equinox brakes seem to be locking up. the brake pedal gets hard and the vehicle does not stop there is a pulsating feel in the brake pedal alost as if it is rubbing on something. no warning...

same problem we bought ours a few months ago thinking we were getting a good car but have had nothing but trouble with it for the last 2 months. same thing our abs light came on along with the tracktion control light and the brakes get really stiff with the pulsating. i have read that it could be a bad pigtail wiring harness to the computer. i will tell you one thing i will never buy another chevy." bummed out in bellingham wa".

Jan 12, 2011 | 2006 Chevrolet Equinox

1 Answer

ABS light and Traction control light stay on. Vehicle brakes ok, but pedal feels "grindy" intermittently when braking

That "grindy" feeling is when the ABS kicks in. It's only suppose to activate when you slam on the brakes and the wheels would normally lock. Instead, ABS will very quickly pump the brakes on and off, to prevent the wheels from locking (making a giant skid mark) and stopping the car more effectively. Generally this only happens if you slam on the brakes or loose traction due to rain or snow while braking. If this is happening often and the brake light is on, on the dash, then you need to get this checked out by a qualified mechanic ASAP.

Dec 01, 2009 | 2006 Chevrolet Equinox

1 Answer

ABS and Traction Control Light On

Because the brakes were changed, either one of the sensors were broken when removing brakes or it has set a code. Go to your local autoparts store and have them reset the code. See if it comes back on. If it does you will need to look at the ABS sensors on each wheel and replace if damaged

Sep 29, 2009 | 2005 Chevrolet Equinox

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

2,390 people viewed this question

Ask a Question

Usually answered in minutes!

Top Chevrolet Experts


Level 3 Expert

79024 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a Chevrolet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides