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.
18-01
This Technical Service Bullsetin provides a list of parts needed and instruction to replace the zinc plated 5th wheel bolts manufactured by YFS do not meet out performance standards and quality expetations in this location and application when zinc plated instead of the previous black oxide version.
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.