ABS and Traction Control lights

Tiny
MATTC21
  • MEMBER
  • 2006 PONTIAC G6
  • 3.9L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 120,000 MILES
The car listed above is a GTP, I couldn't select GTP in the dropdown, it has a 3.9 rather than a 3.5 in a normal G6. In the last few months, I have no idea how it started, my ABS and traction control lights will flicker after driving for about 10 seconds or getting up to like 15 MPH or 2,000 RPMs. My brakes are shaky and the pedal kicks back slightly if I try to brake before my lights turn on. Once the lights turn on and stay on, my brakes work fine, and I never have problems. I have done some research and I'm thinking it's my wheel speed sensors. I am not completely sure how these sensors work or even where they are, and I don't want to get started before I diagnosis the problem exactly.
I am attaching a video of the exact problem - I initially accelerate and brake right after I started my car, and you can hear the shaking and kicking of my brakes. Then, I drive for a couple seconds, the lights turn on, I brake again, and they're perfect.

Any ideas?
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Thursday, June 2nd, 2022 AT 10:40 AM

2 Replies

Tiny
MATTC21
  • MEMBER
Here is the video.
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Thursday, June 2nd, 2022 AT 10:48 AM
Tiny
JACOBANDNICKOLAS
  • EXPERT
Hi,

First, confirm the brake fluid is full in the brake fluid reservoir. See pic 1 below.

If it is full, chances are there is an issue with the wheel speed sensor. You can test this one of two ways.

First, if you have a live data scan tool, you can confirm wheel speed from each sensor. They should be the same. If one is off, then it needs to be replaced.

Or you can check each by using a voltmeter or multimeter. Here is a link that explains how to test one. It's really simple.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

If you look at pic 2, it shows the locations.

Try this and let me know the results or if you have other questions.

Take care,

Joe

See pics below.

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Thursday, June 2nd, 2022 AT 5:35 PM

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