Question about 2005 Chevrolet Colorado

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Abs fault light comes on goes off when u reset it,but might come

Back on next day. 04 colorado

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It sounds like you may have a bad ABS sensor. Best thing to do is check all the wire harness from all the wheels for cracking or breaks. The sensor could also need some adjustment, not sure how it is on the Colorado. There are some ABS sensors that is a part of the wheel hub and just dubble check the wire harness since the hub is going to be replaced = expensive. If it's a ABS sensor that counts the rotation from the wheel hub then it's adjustable. 
The sensor may have moved out a way from the ring counter and may just need to be moved closer to the ring which is a part of the wheel hub. Most of the time a good spray of Brake cleaner will fix that. Just follow the the ABS wire leads to the hub and you should see the sensor. Be surprised on how much dirt can collect back there.
Good luck and hope this helps, If you can get to a auto parts store that will scan for free like Auto Zone. The ECM may even have the information to which wheel has the bad sensor reading. At worst, it's your ABS system it self that may be going bad.

Posted on May 22, 2009


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