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.
SB-403
Service Bulletin/Repair Instructions
NEWMAR CORP.: DUE TO CONTACT OF MODULATOR VALVES WITH IFS RELAY ROD, ON SOME TRUCKS, THE IFS ROD MAY INTERFERE WITH ABS MODULATOR VALVE, WHEN STEERING WHEEL IS TURNED. MODELS 2009-1013 ESSEX, KING AIRE. *PE
TSB-377
Service Bulletin/Repair Instructions
NEWMAR: WARRANTY CLAIM MAY BE DENIED BY EVANS TEMPCON, IF WARRANTY PARTS NOT REPLACED WITH ORIGINAL OEM PART. *PE
TSB-375
Service Bulletin/Repair Instructions
NEWMAR: DUE TO POTENTIAL POOR COOLING PERFORMANCE ON SOME NORCOLD 2117 REFRIGERATORS WITH SERIAL #11323165 AND EARLIER, AN UPGRADE KIT IS AVAILABLE TO BE INSTALLED. *PE
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