brittany devino
Junior Member
Hello im new here. My 12 ram 1500 a month ago once in a while the service trailer brake system light and service 4wd light would come on the dash at the same time and lock the truck in park. I found out the pin for one of the parking brake shoes in the rear rusted apart letting it go around the wheel. So i replaced both side in the rear with new parking brake shoes and hardware kit and now it's doing the whole service trailer brake system and service 4wd system light every time i drive it and locking me in park. I tried looking for other threads but none were the same issue.