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.
18-318
This is the REVISED repair instructions for advisory 18-318. It has been determined that certain Atwood furnace models may have wiring that can come in contact with the exhaust vent tube causing the furnace to shut down in a safe manner.
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.