Question about Buick Century

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I have a low mileage 2001 Buick century. I have brought it to the dealer and they have replaced the "Necessary" parts to fix this warning light issue, but to no avail. The last GM i had was a truck and in the Chiltons it explains how to reset the lights on the dash. For example: "Turn key to on position but don't start. Hold Odometer button for 30 seconds and system with reste." things like that. The Lights in question are: Service soon, Anti-lock, Trac off, and Brake. Any help would be appreciated. Gunny

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There is an intermittent fault with your anti-lock brake system. For some strange reason GM thinks they need to turn on three warning lights. I would suspect the fault is with one of the wheel speed sensors. There should be fault codes stored in the ABS module which can help the service technicians isolate the cause of your ABS fault.

If you have access to an Ohm meter, each wheel speed sensor/hub bearing assy should have around 1000 ohms of resistance through them with no continuity to ground. If they short to ground, they will set a code. If the resistance is too high, they will set a code. If the hub bearing is worn and the wheel is loose and wobbling, the sensor will not read a valid reading and will set a code.

Posted on Apr 28, 2010

    INDIRA KUMAR Apr 28, 2010

    Check the wiring harness for the sensorbefore changing the sensor .Check whether any wires have come loose or so...

    INDIRA KUMAR Apr 28, 2010

    Please donot forget to rate and accept my answer if you are satisfied with the solution i have provided...



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