Any help will do. Started rear brakes and got passenger side off before realizing you had to go into service mode. Never knew anything about it. Yup, rookie I guess. I tried to go into service after I had caliper off. Bunch of lights went off in dash. Complete brake failure, trailer brake error or something along that line. Also said something like top speed 43mph. Never could get those off dash. I ended up finish with new calipers rotors pads on rear. Driver rear was seized up completely. Needless to say. Starting bleeding brakes and got to made with whole situation. Had truck towed into shop and they can’t figure out to unlock rear. Fronts still roll. Any help trying unlock would help. I’m sure I’ll get a nice heathy bill from shop if they ever figure out. Thanks