Just sharing some info here. Had a service parking brake message come up in me '20 2500. Truck has about 27k miles. Pulled codes C060B and C0616. Pulled the L/R wheel to inspect and both parking brake shoes had no lining left at all. Passenger side actually fell apart when I pulled the rotor. Replaced the shoes and cleared the codes and its all good. FYI you can replace the shoes without pulling off the hub but is is a little tricky, a pair of 45degree needle nose pliers definitely helps.