I had my tires replaced and an alignment done in February on my 2014 Chevrolet Impala LS, and approx. 1,000 miles later my ABS and traction control lights came on. My ABS light came on as I was turning at the stop sign outside of my work, then the traction control light came on once I hit the interstate (lights came on 5 miles apart). I dont have any issues stopping, nor has my car been sliding in any inclement weather (my previous vehicle did not have ABS or traction control, so I know what it feels like to drive in snow without them). I read somewhere that tire changes and alignments being done incorrectly could result in the sensors coming loose or being damaged, but I wanted to know if anyone had any experience with this and what repairs needed to be done.

 

Was it intermittant at first and then mostly became perminant?
I had the same problem in my wifes car, passenger side wiring harness to the hub sensor developed an internal break and resulting in at first intermittant loss of the sensor signal causing abs and trac cont to fault, eventually it became perminant. unplug the sensor and remove the loom to expose the wire. look for discolouration that may indicate the insulation has stretched or experianced excessive flexing. I found my break by unwinding the twist and streching each wire. one of them came apart right at the break with little effort. in my wifes 08 gm used wire with stiff insulation and large but few strands of copper in it resulting in a poorly flexible wire in a location that experiences a lot of movement. i fixed it by cutting back the harness and replacing the section of wire that flexes during steering with very flexible wire with many smaller strands of copper and a flexible insulation (the condictors from an sjow cable flexible down to -40c.) Soldered and heat shrink. replaced both driver and passenger sides and havent had a problem since. just make sure to twist your new wires like the old ones, the twist is there to minimize interference.