hello everyone I own a 04 monte carlo ss supercharged it has traction control /abs light on so I did some investigating and found a lot about wheel hubs so I replaced both front hubs , still have problem , I then replaced rear hubs as well , still same problem I unbloted ground wire to abs pump and cleaned ground still have problem !!! tested traction control wires and getting 4.8 ohms of resistance is that good ? I traced wires up and drives side goes into a main harness I got a abs scanner and read codes ,c1248 drp disabled c1225 left front wheel speed sensor variation ,c1232 left front speed sensor open or shorted and c1233 right front wheel speed sensor open or shorted I cleared codes only one left is c1225 I followed the harness for the traction and other than the plastic covering having some dried dirt in there the wires seem good and ideas please help

 

My 2001 had the same issue with the traction control / ABS lights. I could temporarily fix it by disconnecting and reconnecting the front wheel harnesses at the wheel. After doing more inspection, I found the left front harness had been flexing and the wires had nearly separated. There was a replacement harness available for an outrageous price but I just soldered some extensions at the break and put heatshrink on and have had no issues for years.

 

Thanks for checking.