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.
CSB26-500-001
This service bulletin is about certain vehicles equipped with V-Mux Digital Truck Designer (DTD) multiplex system that may experience a situation where the node's internal control state will be out of synchronization with the other modules in the vehicle.
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.