139
Service Bulletin/Repair Instructions
GS500F ENGINE KNOCK AT IDLE / A MILD BUT ANNOYING KNOCKING NOISE FROM THE CYLINDER HEAD AREA. *AK
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.
139
GS500F ENGINE KNOCK AT IDLE / A MILD BUT ANNOYING KNOCKING NOISE FROM THE CYLINDER HEAD AREA. *AK
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.