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.
Letter to dealer
Service Bulletin/Repair Instructions
This was a letter to our dealers we sent out when we first heard of the Kidde fire extinguisher recall, even though it was still unofficial. We knew our coaches on the dealers' lots contained Kidde and could not be sold unreplaced.
SB-36
Service Bulletin/Repair Instructions
TIFFIN MOTORHOMES: TSB CONTAINS NOTIFICATION OF OWNER LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. TWO SCREWS WAS NOT INSTALLED ON THE AIR CONDITION UNITS ON THE ROOF. *TA UPDATED 11/24/15. *PE
C85-C86AC
Service Bulletin/Repair Instructions
TIFFIN MOTORHOMES: TSB CONTAINS NOTIFICATION OF OWNER LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. ALL TIFFIN MOTORHOMES WILL BE INSTALLING 2 BACK SCREWS OF THE C85 AND C86 A/C'S TO THE ROOF OF ALL TIFFIN MOTORHOMES. *TA.
WI-196
Service Bulletin/Repair Instructions
TIFFIN MOTORHOMES: TSB CONTAINS NOTIFICATION OF OWNER LETTER. SELECT DOCUMENT SEARCH BUTTON BELOW. SOME TIFFIN MOTORHOMES NEED DRIVER/PASSENGER SEATBELTS TIGHTENED ON THE MOUNTING BRACKETS LOCATED ON THE DRIVER/PASSENGER SIDEWALL. *TA