ABS INOP / BRAKES ?! help

[DuckWS6]

My ABS INOP, BRAKES and ASR OFF light will come on randomly while I'm driving. What can cause this? I had a brake light out, and I replaced that. Brakes feel fine and there are no other problems? Anyone had a similar problem? - Thanks in advance

[DuckWS6]

Maybe that my front left tire doesnt have near as much tread as the rest could be messing with the computer. Anyone ever have a sensor come loose?? What do yall think?

[playapat12]

I had this problem after I did the "Big 3" wiring upgrade. Check the ground next to the battery. there should be a wire that goes from the battery to the body, about 6 inches away. make sure that is tight and pour some coke on it if you arent sure. Hope this helps