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Discussion Starter · #1 ·
I recently replaced the front tires on my Terrain and after a few days the Stabilitrack and ABS lights popped up in the dash. I wen to an AutoZone to scan the code and it gave me the "C0040-5A right front wheel speed sensor circuit not plausible". The symptoms it has are, there is a grinding noise (almost like when braking on snow) when braking at parking lot speeds and then AWD gets turned off and the noise is gone. I noticed that after the second tire replacement (I did one at the time) it's pulling to the left. I've done some research and found out that it might be caused by a bad sensor or a bad magnetic ring in the wheel hub. My question is, are there other possible causes since it happened right after a tire replacement as the wheel alignment or something else? I know that I was supposed to change all 4 tires at once, but I'm a student and money is short.
 

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It is a coincidence, I basically had the same thing happen. I replaced wheels and tires and hub bearing went out, the following week.



It may be coincindence that you starting hearing the noise but everything your describing is a bad wheel bearing hub. Abs is now part of the hub and if the bearing is going bad the sensor will be too
 

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Discussion Starter · #4 ·
I have replaced the sensor and disconnected the battery to clear the code an now it gave me a different code "C0040-06 right front wheel speed sensor low voltage/open. So I guess next is replacing the hub. Do you guys think I should replace both sides?
 

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2011 Equinox 1LT V6 3.0L FWD 182k miles
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I have replaced the sensor and disconnected the battery to clear the code an now it gave me a different code "C0040-06 right front wheel speed sensor low voltage/open. So I guess next is replacing the hub. Do you guys think I should replace both sides?
My policy is only to replace what's broken. I think there are some cases where the recommendation is to change both sides (suspension parts) ... maybe because you could end up with a leveling or alignment issue there ... but, to my knowledge, this "rule" doesn't apply to Hubs.

What brand of Sensor did you use for the replacement? If there's nothing wrong with the Magnetic Ring on the existing Hub (you can visually inspect that looking at the back of the Wheel), then I'm wondering why you're still seeing a Code.
 

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Discussion Starter · #6 ·
My policy is only to replace what's broken. I think there are some cases where the recommendation is to change both sides (suspension parts) ... maybe because you could end up with a leveling or alignment issue there ... but, to my knowledge, this "rule" doesn't apply to Hubs.

What brand of Sensor did you use for the replacement? If there's nothing wrong with the Magnetic Ring on the existing Hub (you can visually inspect that looking at the back of the Wheel), then I'm wondering why you're still seeing a Code.
I use a Dorman sensor. I saw a video about inspecting the ring but I couldn't find mine. I'm a noob and i just jacked my car with the standard jack. I should probably take a second look.
 

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Discussion Starter · #7 ·
Hello again!
I've replaced the hub and the code is gone. However now there's a rubbing noise (sounds like something is rubbing on the heat shield when in low speeds and a whistling noise at highway speeds. Any possible causes?
Thanks!
 

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@FGiacomelli : you’re bringing back memories now! I did a Hub replacement on my 2002 Impala (ACDelco part from Rock) and heard the same faint “ch-ch-ch” noise as the wheel turned at low speed. Sounded just like you said ... like something was barely contacting a shield, but I looked around underneath and couldn’t see anything obvious. Eventually, the noise just stopped occurring! LOL! Maybe one day I’ll be back underneath taking things apart again and notice how strange some part seemed to be designed...🤣
 

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2015 Equinox LT 2.4L AWD
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My 09 Torrent had metal to metal noise when making a turn. Took the front brake apart and found nothing. Finally found out it was the dust shield touching the rotor. Must be pushed in by thick snow.
 
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