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Old 03-15-2018, 11:27 AM   #1
dmayorgap
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2008 VUE 3.6L
Default ABS and Brake light

Hi Guys, i've been with a problem with my Captiva Sport (VUE XR), my ABS, brake lights are on, and also Service Stabilitrak, Service Traction Control, and All Whee drive off messages, sometimes are intermittent, they star dinging and on and off very quickly, and some days dissapear, my question is: if a single wheel speed sensor is not working properly it can trigger all of this messages? where should i start looking?

Thanks

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Old 03-15-2018, 08:18 PM   #2
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2003 L-Series 3.0L Sedan
Default Re: ABS and Brake light

ABS, Service Stabilitrak, Service Traction Control are all part of the abs/tc/stabilitrak system. If I'm not mistaken, all wheel drive is mechanical and not part of the abs system. The (red?) brake light turning on is usually associated with either low brake fluid (leak or worn disc brakes) or faulty Parking brake switch. You may have several problems or they're related. Related as in main power - battery, battery cables, their connections and alternator. Or separate problems unrelated to power.

If you can, measure battery voltage (engine off) and voltage with engine idling. Standby battery voltage should not be below 12 volts. Engine idling voltage (alternator output) should be between 13v-15v, around 14.5v. Regulated power should always be higher than battery voltage. The serpentine drive belt should be tight otherwise a loose belt may not allow the alternator to supply all power to the vehicle while recharging the battery.

If voltages are ok then you may have to examine brake wear for low brake fluid turning on the brake light, all wiring to all four wheels for the abs/tc/stabilitrak system, reluctors that each wheel speed sensor uses to detect individual wheel speed, and each wheel speed sensor. The best way to determine exactly where problems are would be using a reader capable of decoding abs codes or visiting a GM dealer to decode everything. ABS codes are 'C' type for chassis. 'P' codes are emissions, 'U' for network and 'B' for body.

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Old 03-15-2018, 09:41 PM   #3
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2007 ION-2 Quad Coupe
Default Re: ABS and Brake light

Quote:
Originally Posted by dmayorgap View Post
Hi Guys, i've been with a problem with my Captiva Sport (VUE XR), my ABS, brake lights are on, and also Service Stabilitrak, Service Traction Control, and All Whee drive off messages, sometimes are intermittent, they star dinging and on and off very quickly, and some days dissapear, my question is: if a single wheel speed sensor is not working properly it can trigger all of this messages? where should i start looking?

Thanks
Short answer: Yes.

The only outlier I see is the red brake light. That warning light operates independently and only comes on if the brake fluid is low or if the park brake is engaged. Generally, low brake fluid level alone will not cause ABS to be disabled unless the fluid level is low enough to cause ABS fault to be detected by the electronic brake control module (EBCM).

AWD is affected because it is not a true, full-time AWD setup like you see on a Subaru. The rear wheels only engage if front wheel slippage is first detected. As you might guess, the ABS wheel speed sensors are used to detect said wheel slippage.

I would definitely get the battery and alternator tested first if your vehicle is a 2014 or older.

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Old 03-16-2018, 08:32 AM   #4
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2008 VUE 3.6L
Default Re: ABS and Brake light

Hi, thanks for your answers, today lights were off in the morning, but when i start driving i can hear a buzzing noise, its not the ABS self-diagnostic that triggers when getting about 20 km/h, its a buzzing noise that starts inmediatly when the car starts moving and i can hear it near the location of the ebcm, seems like the abs pump? its normal?

Thanks

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Old 03-16-2018, 12:20 PM   #5
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2003 L-Series 3.0L Sedan
Default Re: ABS and Brake light

Now that you've become a little more aware of "things that go bump in the night", you're probably hearing (for the first time) the abs pump cycling. Most describe it as a zinging sound for a second upon initial drive off. The abs pump and circuitry are exercised every time the car moves right after start up and initial drive. It completes the abs self tests otherwise if something fails the abs light turns on and stays on. Your descriptions seem to be intermittent. GM may be the only ones to decode stored abs errors to point to the problem. Your abs is resetting then an error occurs then resets each time ignition is turned off and back on. All electronics are programmed to perform their own self tests every time ignition is turned on. When all goes well, nothing lights up. When an error occurs a light turns on telling you something is broken. In this case an intermittent problem is occurring.

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Old 04-07-2018, 10:35 PM   #6
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Default Re: ABS and Brake light

i had the same problem its the wheel bearing

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Old 04-10-2018, 04:55 PM   #7
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2008 VUE 2.4L
Default Re: ABS and Brake light

Thanks for the info.

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