I have a 2004 chevy venture, when i start the car the abs light will come on for the bulb check and then will go out. after driving for at least a half hour, when i apply the brakes i hear a groaning noise, after applying the brakes 6 or 10 times with this noise the abs light comes on, but the groanig noise stops. whenever you shut the car off it repeats this same process as stated in this question. thankyou
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Re: ABS light comes on
Per your description, I would suspect you have a faulty wheel speed sensor. Take you vehicle to your local Auto Zone or Advanced Auto and have the codes pulled for free. Write them down and let me know what they are and we can go from there.
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On vehicles equipped with antilock brakes (ABS), a second warning light is provided to warn if a problem occurs within the ABS system. The ABS lamp comes on when the ignition is turned on for a bulb check, then goes out after the engine starts. If the ABS warning light remains on or comes on while driving, it indicates a fault has occurred in the ABS system.
What happens next depends on the nature of the fault. On most applications, the ABS system disables itself if the ABS warning light comes on and remains on.
check the abs sensors and connections of the sensors also that the sensor connection is attached to the clip[part of the circuit if wiring and connections are good then have car scanned most auto stores such as auto zone / advanced auto do this service for free check ur local area the trouble code will pinpoint ur problem so ur can repair ur car
there are four ABS sensors. one behind each wheel in the hub assmebly just follow the shielded wiring harness down to the sensor, it is at the behind the brake rotor in the hub assmebly, the lock up problem is not the sensor, the function of ABS is to stop lock up of the wheel, this problem is caused by a leaking ABS hydraulic control unit, that is the part with all the brake lines coming out of it
No, it is probably not related. Usually the ABS and traction control light is either a wheel sensor problem, located in one of the wheel bearings, or most likely in the wire harness from the wheel bearing sensor. Remove wires and spray clean with a good solvent electric spray, and check the condition of the receptacle. I have had these problems with my 02 AWD so many times it has become almost routine. GM really have a problem with this type of speed sensor in the wheel bearings. In the AWD model, it keeps the car in FWD if the ABS light is on for any reason. JUNK!