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.
B-ISO-9001
HEIL TRAILER: HEIL TRAILER INTERNATIONAL AND TRUCK LITE HAVE WORKED TOGETHER TO IMPROVE THE STANDARD WIRING HARNESS FOR THE PETROLEUM MARKER LIGHT. HEIL NOW RECEIVES TRUCK LITES NEW STYLE FRONT MARKER LIGHT WIRING HARNESS WITH NO BARE WIRES EXPOSED. NO MODEL OR MODEL YEARS LISTED. *PE
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.