Question about 2003 Chevrolet Impala

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Abs and TC lights come on. Groaning noises from brakes coming on

Feels like abs coming on when not needed. I have heard it6 could be sensors in the wheels.??? Any assistance appreciated.

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  • dvenright Jun 24, 2009

    Problem: ABS / TC coming on for no reason. ABS and TC lights come on in car. Happens off and on - not all the time.



    Took Montana to independent garage which was recommended by our body shop fellow.



    They figured it out in a few miutes: Worn bearing in wheel hub-bearing assembly. We had a non-GM part put in and warrantied for one year.



    All lights are working normally and the ABS and TC don't come on any more when driving along!



    The worn bearing can send confusing signals to sensor and subsequently the ABS/TC unit.



    We are very happy with our repair! Best of all ...it was under $400.00 Canadian with an oil change to boot!



    I would recommend that if you have this problem you ask a mechanic to put your vehicle on a hoist and check for play in the front wheel bearings.

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I had the same issue and took it to the dealer. They changed out a sensor and a hub. It cost me over $550. About 1 month later the same thing happened again. They tried to tell me they had to do same thing and I told them they just did the work 1 month ago. So they re-checked it and told me that the issue was that one of the tires was low in air pressure. Although the tire monitor sensor did not come on, I did have a previous flat and put on a new tire. They filled it with air and the issue has gone away. I know it sounds dumb but check your air pressure. If this works then I think that GM should put out a recall notice. This is really scary when your abs activates and you are on drive.

Posted on Jun 24, 2009

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Please have your vehicle checked using a scan tool! to determine where the fault is! but its sensor or actuator related failure.

Posted on Jun 17, 2009

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