Question about Chevrolet Suburban 2500

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I have a 1992 Suberban 4x4 454 auto trans. I have an ABS light that comes on at 10-15mph and goes off when I stop. I believe my vehicle has three speeed sensors two up front and one on tail shaft. How can I trouble shoot the speed sensors and ABS light?

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  • josekari May 31, 2011

    Yes itwas help full but its not fixed.

  • josekari May 31, 2011

    I checked the resistance at both fron wheels and they were the same. I havnt checked the volts because I was not sure how. Ill try just spinning the wheel with my volt meter on the plug of the sensor. I also checked the tail shaft sensor and resistance was the same. I dont think my car has a sensor at each wheel.Ill also need to take it to a shop to have it scanned. If you have any other tips Im all ears.



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Need scanned the ABS module for codes to see if a sensor may be going bad or you have a solenoid or pressure problem at the ABS controller or calipers.

Sounds like one sensor is reading different speed then the other. Have you checked the individual sensors at the wheels. Each wheel will have a sensor. Check the resistance in the sensor and the volts coming out of the sensor when you spin the wheel. You need to check it at the sensor though, because if you have no volts coming out of the sensor then your problem is probably inside of the sensor. Make sure all of the tooths ar still on the ring also (which is what the sensor reads).

Hope this helps.

Posted on May 26, 2011


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