1994 Cadillac DeVille messages

I recently had my front wheel bearing replaced, and rotor as well. Mechanic cannot seem to clear codes on dash that read anti lock and traction disabled. Also, when we hook up code reader, it reads that each wheel is going different speeds, this reads when we are parked??? How can we solve this problem?

Say when the problem started, before or after work was done. If after, you might have to replace the broken parts.

anti lock light and traction disabled were on before we changed out the rotor and wheel bearing.