ABS/traction lights on

I replaced the pass front bearing hub due to growling noise. The abs lights were not on. After replacement, the abs/traction off/ service traction system lights came on and stayed on.

i was extremely careful with the wires and connection, nothing was smashed, broken, or pulled

i went to my mechanic, he plugged in and found no codes and couldn't turn out the lights. He said the problem might be the ignition switch/module because he could not communicate with the car with the car running, but could with the car not running with the key in the on position.

he said he had the same problem with an impala with the chief complaint being abs/trac/service trac lights on. Nothing was wrong with the abs system and so he also had the same problem reading the computer. He replaced the ignition system and was finally able to communicate with the car. And the light went out and stayed out.

have you heard of this being a solution to this problem.

thanks