whats wrong?

[mason313]

Every once and awhile traction control will come on for no reason sometimes making a griding noise from the front left tire. Also the abs and traction control off lights, service tire monitor, service stability, and stability system disabled messages all come on and on there own. Also the abs will kick on stoping normal somtimes.

 

[DenaliAK]

Pull the codes and diagnose from there. There are way too many things involved in the whole traction control system to just guess, and generally one thing effects the whole system, hence all the lights coming on (all of those are elements of traction control).

The noise traction control makes is basically a weird grinding noise that sounds horrible but is normal. No reason to come on to you may not be the same thing to the computer, too. I've had mine kick in hitting a bump on a corner or on tiny slippage on gravel...stuff I wouldn't normally worry about, but the computer gets ready to keep the car under control.

 

[mason313]

Traction control usally comes on from a stop pullin off normally on dry pavment. The grinding noise when it does it cause it dosnt alway it stays on for a longer period of time than say the traction control does

 

[Sasquatch]

I had the same problem with my yukon and it turned out to be a bad wheel speed sensor on the front hub bearing.

It was reading the speed wrong and the computer thought there was wheelspin causing the traction control to come on.

And it only happened when starting from a stop.

Mine never had a grinding noise because the bearing was fine but the sensor was broken.

I think you may have a bad bearing and thats where the grinding is coming from.

 

[DenaliAK]

Yeah, depends on what kind of grinding noise it is. It's really hard to describe noises, especially in words....lol. My traction control unit makes a really weird noise when it's on, which freaked me out at first but I found out that's just what it does.

Either way, I would still start with pulling the actual error code(s). That'll give you a place to start.