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.
TSB-372
Service Bulletin/Repair Instructions
NEWMAR CORP.: FAILED AMSAFE SEAT BELTS BEING RETURNED TO NEWMAR FOR WARRANTY COVERAGE. PLEASE NOTE THAT WHEN CHANGING OUT WARRANTY AMSAFE SEAT BELTS, BOTH HARNESS STRAP WITH CLIP AND BUCKLE PORTION WILL NEED TO BE RETURNED. ALL MOTORIZED MODELS AND ALL MODEL YEARS ARE INCLUDED. *PE
337
Service Bulletin/Repair Instructions
DISCOLORATION IN THE REFRIGERATOR ENCLOSURE WALL ADJACENT TO THE FLUE EXHAUST ON NORCOLD 1200LR REFRIGERATORS. CONCERN IS THAT THE DISCOLORATION IS DUE TO EXPOSURE TO HEAT FROM THE FLUE. *NJ
338
Service Bulletin/Repair Instructions
[ENGINE BRAKE] LIGHT FUNCTION WAS PROGRAMMED (DISABLED) IN [ENGINE PROGRAMMING PARAMETERS]. *NJ