what do i check for!?? its an 06 cobalt ss/sc

 

Mine goes on and off all the time. I don't really worry about it.

 

Wheel speed sensors

 

same, about once a year for a week or so. One of which I added some brake fluid and it went away.

 

look at he abs rings. all of them. check for cracks, and also while your there, check the sensors make sure they are clean, and not knocked off or something. after that, go check if it still works. carefully. if the basics are all there, could be a module issue.