ABS engages all the time!

Old 12-02-2010, 02:08 PM
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Join Date: Dec 2010
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Default ABS engages all the time!

  • i need help
  • 2005 chevy silverado
  • 4wd, 5.3, Z71 pkg, has every option on it
  • abs engages when i brake, everytime.
  • the problem occurs towards the middle to end of the braking session

Please help me
Old 12-02-2010, 02:10 PM
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Old 12-06-2010, 09:20 PM
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Smile solution

I had same problem on my 2002 z71. It was a front wheel speed sensor.
mine was bad on the driver side but are more common on the passenger side because of road conditions. To find out which sensor it is you will need to hook up a scanner to the ecm and go for a drive with a buddy or mechanic. then it will show the problematic sensor because it shows 0mph on the bad sensor while the other 3 wheels still are showing a positive input(i.e. 10mph etc.). Sensor can be bought separately or you may have to buy entire hub assembly if your sensor becomes seized inside the hub.

Your Welcome!
Old 12-14-2010, 08:44 PM
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Join Date: Nov 2010
Posts: 25

Had the same problem with my 05 silverado. I figured it was the wheel speed sensor but didnt know which one it was. I dont have a scaner to check so what i did was this.

Jacked up the front of the truck so both front wheels are off the ground. Disconnected the wheel senor from the frame connector. Put a volt meter in the 2 ports and spun the wheel by hand. The wheel with the lowest voltage is the one i changed. It was teh drivers side one. I forget the voltage but it was low compaired to the other side.
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