There is a good chance the rear wheel only ABS system (junction block) went lame. Instead of trying to fix it, they probably just removed the rear brake shoes and went without.
That rear ABS junction block is probably still stuck.
Awesome thank you! It's funny because in your thread I was asking about the abs I wanted to keep mine. Looks like someone took care if that for me. I'm wondering if when the rear end was replaced they just never bothered to replumb it?
Where did you find that bypass fitting? Do you happen to have a part number?