ABS+Stability+Traction issue
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Cadillac STS Forum - 2005 through 2012 Discussion, ABS+Stability+Traction issue in Past Cadillac Vehicle Discussion; A month ago I got a warning while braking semi-hard, Service Stability Sys and Service Brake Assist. Nothing could be ...
  1. #1
    No Quarter's Avatar
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    ABS+Stability+Traction issue

    A month ago I got a warning while braking semi-hard, Service Stability Sys and Service Brake Assist. Nothing could be felt, only the warning lamps glowing at me. Happened again a few trips later. Gradually became more frequent and needed less hard braking to come on. Lately it'll turn on after a few seconds after start whether I'm braking or not.

    Annoying but I could drive on. Well tonight something new happened, when braking normally the pedal pulsates a little and with high frequency just before I stop. So if braking from 50 mph to 0 mph in a normal fashion, at 5 mph the ABS (which I assume it is) starts without being needed.

    Anything I can do before driving to the money hungry dealer? Testing, changing most likely components? Can I drive it?!

    Any suggestion is welcome.

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    1BadCadSTS's Avatar
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    Wheel bearing or steering wheel postion sensor is my bet. The cheapest thing would be take it to the dealer for a proper diagnosis. You can choose to throw parts at it until you hopefully fix it or buy a tech 2 and scan it yourself however both of those will be much higher than the $80 diagnostic fee. It's a Cadillac not a Honda which any jiffy lube can diagnose an issue with.

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    Re: ABS+Stability+Traction issue

    With those messages present you should be able to get it scanned at a local parts store, as long as their scanner can read more than just PCM codes. I also suspect a wheel speed sensor (wheel bearing) or steering wheel position sensor, the code(s) will tell the full story though.
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    Quote Originally Posted by curtc
    With those messages present you should be able to get it scanned at a local parts store, as long as their scanner can read more than just PCM codes. I also suspect a wheel speed sensor (wheel bearing) or steering wheel position sensor, the code(s) will tell the full story though.
    I have never seen a parts store with ascanner capable of listing Cxxxx abs chassis codes....

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    Re: ABS+Stability+Traction issue

    If your car happens to be one of those with what is known as "ABS Assisted" brakes, a rather peculiar power assist system, you are about to experience having no brakes at all.
    Don't mess with Binky Bear!


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    dannyquest is offline Cadillac Owners Fanatic
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    Re: ABS+Stability+Traction issue

    Warped rotors could be a problem. Danny

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    Re: ABS+Stability+Traction issue

    Warped rotors have NOTHING to do with ABS and stability light coming on upon initial start up not to mention warped rotors are completely fictitious...

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    Quote Originally Posted by 1BadCadSTS View Post

    I have never seen a parts store with ascanner capable of listing Cxxxx abs chassis codes....
    I have. Friend of mine worked at Advance Auto a few years back, whatever he used read P, C, and B codes.
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    Re: ABS+Stability+Traction issue

    Got lucky I think, the local garage I sometimes use when I have more money than time(), they could read the fault codes on their laptop. Rear left ABS sensor. So I need a new bearing/hub. They are priced very very differently, OEM is about 10x as expensive at the China part. I've always used the cheapest part available for my Jeep Grand Cherokee, including hubs, worked fine. Does anybody have experience with these cheap hubs?

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    Re: ABS+Stability+Traction issue

    Sure, and youll be replacing it again shortly.

    Moog is the ONLY one other than Delco I would put on my car. Cheap parts are cheap for a reason.

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    curtc's Avatar
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    Re: ABS+Stability+Traction issue

    I've had good luck with Timken and SKF bearings, I've also used many Moog parts in the past as well, no bearings though.
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    Quote Originally Posted by curtc
    I've had good luck with Timken and SKF bearings, I've also used many Moog parts in the past as well, no bearings though.
    Timken I would use too.

    However using the cheapest part available isn't the best course as the op is assuming he can get away with.

  15. #14
    curtc's Avatar
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    Re: ABS+Stability+Traction issue

    Quote Originally Posted by 1BadCadSTS View Post
    Timken I would use too.

    However using the cheapest part available isn't the best course as the op is assuming he can get away with.
    Wheel bearings are like tires and beds, you get what you pay for...Cheap out and you'll be doing it again soon and replacing a wheel bearing isn't exactly my favorite thing to do.
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  16. #15
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    Quote Originally Posted by curtc

    Wheel bearings are like tires and beds, you get what you pay for...Cheap out and you'll be doing it again soon and replacing a wheel bearing isn't exactly my favorite thing to do.
    Agreed!

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