Traction control and ABS

I have a 2009 Chevy Impala and recently I got the
front left wheel bearing replaced and ever since, I
have been having issues with it because the abs
light and traction control light come on. I took my
car back to the shop where I got the bearing
replaced the mechanic told me that the sensor
within the bearing was having a hard time tracking
what the wheel is doing. I got it fixed and then a
week prior, the abs and traction control lights came
back on and the next day it turned off and the
same thing happened again, when it happened I
had pulled into a parking lot and there was a slant
getting into the parking lot and I had jumped that a
little quick and the abs and traction control lights
came back on and I went to get it diagnosed
immediately when it came on the code that was
associated with the lights was C0035 and the guy
told me it was a circuit problem in the wheel speed
sensor and after that the lights turned off. About a
week prior to the diagnosis the lights came on
again and I was parking my car where I was
parking there was some gravel. I'm not convinced
that it is a wheel bearing problem.