"Service Brakes, Traction Control Off" problem - Chevy Traverse Forum: Chevrolet Traverse Forum
 
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post #1 of 9 (permalink) Old 12-05-2016, 08:52 AM Thread Starter
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"Service Brakes, Traction Control Off" problem

Lately my 2011 Traverse will randomly start chiming, the brake light will flash and the DIC displays a "traction control off" message. From this point, i cant turn traction control back on until i restart vehicle. The brake light goes off within 10 seconds. I cant feel a difference in braking. I read where it could be a low brake fluid issue but i checked it and it is at an acceptable level. Ive also heard speed sensors and what not. Anybody have the same issue that has been resolved? It only does when im braking obviously. It doesnt just come on randomly.

Thanks in Advance.
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post #2 of 9 (permalink) Old 12-05-2016, 09:01 AM
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Re: "Service Brakes, Traction Control Off" problem

So many different things that could cause this. One other not so uncommon thing is the brake light sensor which is part of the brake pedal may be out of adjustment or going bad. A broken or poor connection on one of the wheel hubs is another one.

Next time the light comes on see if you can stop at an auto parts store and have the car read for any codes. You should leave the car on until they read it or tell you to shut it off. Many of the national stores will do this for free (except in California).

Ten pages of different posts regarding the lights coming on and various reasons for it. The last post #188 on page 10 talks about the brake light sensor. That owner had his brake lights on all of the time because his switch or sensor was stuck. Yours may only be failing occasionally if at all.

http://www.traverseforum.com/index.p...6466#msg216466

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post #3 of 9 (permalink) Old 12-05-2016, 09:06 AM Thread Starter
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Re: "Service Brakes, Traction Control Off" problem



thank you for the reply. Yes i looked thru pages of possibilities in threads and never could come up with a definite- which is a feat in its own when working on cars. But thanks ill try to have the code read next time.
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post #4 of 9 (permalink) Old 12-06-2016, 07:31 AM Thread Starter
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Re: "Service Brakes, Traction Control Off" problem

i got to thinking...(not good)

I just had two new tires put on the front. The rear are next. But, could this throw off ABS, traction control, all that crap with the difference in tire tread??
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post #5 of 9 (permalink) Old 12-06-2016, 10:39 AM
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Re: "Service Brakes, Traction Control Off" problem

If your Traverse is AWD it 'could' make a difference if the tread depth is very different or the tire sizes are different. Not all manufacturers are the exact same circumference even though the sidewall says so.
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post #6 of 9 (permalink) Old 12-06-2016, 11:38 AM Thread Starter
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Re: "Service Brakes, Traction Control Off" problem

yeah. size says the same but fronts are brand new and backs are very low tread.

Yes it is AWD
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post #7 of 9 (permalink) Old 12-06-2016, 03:51 PM
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Re: "Service Brakes, Traction Control Off" problem

Quote:
Originally Posted by mcobb
i got to thinking...(not good)

I just had two new tires put on the front. The rear are next. But, could this throw off ABS, traction control, all that crap with the difference in tire tread??
YES.

if it is significant difference-- it will set of Stabilitrack/ABS.

what happens is that the new tires are bigger...

over a certain distance the bigger tires spin LESS- than the smaller/worn tires..

the system detects that the tires ARE NOT spinning at equal rotations.... and the system thinks the wheels have lost contact with the ground- and it activates the systems to regain traction... and get the wheels spinning at the same rate.

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post #8 of 9 (permalink) Old 12-07-2016, 10:07 AM Thread Starter
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Re: "Service Brakes, Traction Control Off" problem

okay thanks. Is it hurting anything while im driving? I plan to get the new ones on this weekend. And will it automatically stop after that or do i need to reset anything?
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post #9 of 9 (permalink) Old 12-07-2016, 02:13 PM
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Re: "Service Brakes, Traction Control Off" problem

Potentially it 'could' hurt the transfer case or the rear axle clutch drum (located in the rear axle just before the diff). If I'm reading the assembly diagram correctly I think the Chevy system actuates the rear axle thru the electric clutch drum. Subaru AWD (although built differently) has the same issue and cannot tolerate more than 1/4" difference in tire circumference front vs rear.

If possible I'd try not to drive it too often or very far until the new tires are mounted. The ECU should sense the tire circumferences are back in tolerance and not turn on the light afterwards but you may have a stored fault code afterwards.
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