Brake chamber-missing nut
Service Bulletin/Repair Instructions
Missing Inner nut in the Right Hand Side (RHS)/Curbside Brake chamber
Vehicle report
Technical service bulletins are instructions a manufacturer sent its dealers about a known fault. They are not recalls and the work is usually not free, but they are the clearest signal of a problem the manufacturer already knows about.
Brake chamber-missing nut
Missing Inner nut in the Right Hand Side (RHS)/Curbside Brake chamber
Complaint counts are reports filed with NHTSA, not failure rates. A common model collects more of them than a rare one that breaks more often.