How to tell if hub Bad? How to tell if speed sensor is bad? buick lacrosse

Working on 2010 Buick Lacrosse CXL
Code 40045-0F Left rear wheel speed sensor circuit - Signal erratic
other code was C0040-06
First off I want to say I'm sorry for the video quality. I can't change the video layout after it's uploaded on youtube sorry. This was some of my first videos I uploaded on youtube and I've came a long way since then and my newer videos are a lot better quality. I updated on 4/30/2023.
Please like and subscribe to help this channel grow.
Thanks and god bless
2011 2012 2013 2014 2015 2016
11 12 13 14 15