2003 Chevy Impala.
Engine size = v6.
Dash lights = service traction.

Question = I've been hearing a vibrating sound or grinding sound when i first push the gas pedal. It used to happen every once in a while and now its doing it more often. A couple of weeks ago i pushed the gas and the grinding sound came on, then the service traction system light stayed on. The light isn't on every time i start my car. It does the sound only when i step on the gas and the light doesn't come on all the time either. My question is why or what is making that sound and causing my service traction light to come on? Oh and when the service traction light is on, my abs light comes on also.
Answer:
You probably have a bad hub bearing and/or wheel speed sensor. When the service traction light is on, usually the ABS light is on as well. Either way, there will be a trouble code stored in the
electronic brake control module. If the noise is like a growling or rumbling sound, or a metallic type noise, you have one or more hub bearings that are bad. The wheel speed sensors for each wheel attach and are part of the hub bearing assembly. You would need to take the car to a shop that can scan the computer and see what codes are set to aid in diagnosis. Also, sometimes the wiring harness to the speed sensors either breaks or gets rubbed through and that can set the service traction light on too.
Question: My 2005 Chevy Impala service traction light is on and as I'm driving it makes this noise that sounds almost like I'm driving in the air or motor cycle sounds.
Chevy Impala Traction Light And Grinding Noise

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