Anyone have problems with the traction control on 2012 Impala?

[poesdad]

Has anyone had problems with the traction control kicking on when norm driving, on dry pavement?


We are having a hard time figuring out what is wrong with one of our Impalas. The traction control kicks on when we turn from a dead stop to the left. It falls on its face.

 

[Jake Duda]

Has anyone had problems with the traction control kicking on when norm driving, on dry pavement?

We are having a hard time figuring out what is wrong with one of our Impalas. The traction control kicks on when we turn from a dead stop to the left. It falls on its face.

Hard to diag from my end, a few things to check would be the upfit. if a wire was brought through the firewall grommet and a wire got nicked, it could cause intermittent issues. I'd try manually shaking harnesses while someone monitors the trac control light. It might have nothing to do with this, but it's a start. Any one else?

 

[tvsjr]

Likely a flaky wheel speed sensor. If one's falsing it will make the PCM think a wheel is spinning, so it will step in. I would get this figured out... it can be hazardous.

 

[RyanZ71]

Still under warranty? Might also visit the folks over at Chevy Impala Forums see if any of them have any ideas.

 

[RyanZ71]

Also, does the traction control disengage properly when you press the trac button over there by the headlight knob?

 

[poesdad]

Still under warranty? Might also visit the folks over at Chevy Impala Forums see if any of them have any ideas.

Yes, it's under warranty. It is currently at Chevrolet and they are having a hard time fixing it. I will relay the ideas from here, to them. Thanks for the help guys.

 

[tsquale]

Likely a flaky wheel speed sensor. If one's falsing it will make the PCM think a wheel is spinning, so it will step in. I would get this figured out... it can be hazardous.

I agree with this. Similar thing happened with my Explorer and it was the sensor.

 

[Torpedo]

I think it's a bad cable to wheel sensor that shorts or opens while steering. The dealer will likely have a long head scratch finding this if they ever do. Most dealership mechanics are readout readers and parts changers, not mechanics. These cables are easily damaged by poor service techniques or even snow/ice build up can take them for a stretch. Very easily damaged and easily replaced.

 

[RyanZ71]

Ditto.

 

[patrol530]

On my '07, every once in awhile, I'd get a "stabilitrak initializing" message, for no good reason. On my current '12, the dealer gave me a data recorder to plug into the OBD connector to diagnose an intermittent shifting issue. When ever it was connected, every 5 minutes the car would chime and message that the "traction control was on". No issues when their faulty test equipment wasn't plugged in.


As previously stated, if it is an issue when the vehicle is "turning", then it's a wheel sensor probably, as the wheels are obviously spinning at different rpm's in the turn.

 

[justavillain]

I had that in my Silverado new wheel bearings and a reflash of the pcm fixed it