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For some time now my ABS light will "chime", flicker on and off

Tiny
CRAIGOOWEN
  • MEMBER
  • 2005 GMC SIERRA
  • 173,000 MILES
For some time now my ABS light will "chime", flicker on and off, and while traveling at a slow pace (less than 30 mph) and nearing a stop my anti-lock brakes will engage. There is little consistency in this problem other than it only happens at a slow speed as I stop and the abs engaging?
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Sunday, December 9th, 2012 AT 2:03 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,741 POSTS
False ABS activation at low speeds is a common problem on GM vehicles. On the trucks it's caused by rust buildup between the wheel bearing housing and the wheel speed sensor. The signals generated aren't too substantial to start with, and that rust pushes the sensor away which reduces the signal even more until the computer doesn't see it. It sounds like you may have a wheel speed sensor that is out. These videos will help us find the problem.

https://youtu.be/rTtAnsOlZU4

and

https://youtu.be/Pb6nXV-iamI

and

https://youtu.be/ANWVTh2RQoQ

and

https://www.2carpros.com/articles/abs-warning-light-on-easy-repair-guide

Please run down these guides and report back.
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Friday, March 10th, 2017 AT 10:36 AM

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