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.
CSA-045
Other
Tiffin sent out an addendum to be added to Owner's Manuals that states, "Tiffin Motorhomes recommends that all diesel units be refueled using standard automotive-grade diesel fuel pumps, rather than high-flow commercial truck stop pumps. The fuel delivery rate from commercial truck stop pumps is often too aggressive for motorhome fuel systems, which are not designed to handle rapid fuel intake. Using high-flow commercial truck stop pumps can result in overflow, spillage, premature shutoff, or even damage to the fuel fill components."
MCD-009
Other
Stopped using the lights we had been using due to expense. Replaced with these, but these new lights have to be wired in instead of just clicking in. These are the instructions to wire in.
SB-75
Service Bulletin/Repair Instructions
It has come to our attention that on certain Tiffin motorhomes equipped with optional Go Power! solar panel solar panels systems, the 30A inline fuse located before the cable entry plate should be removed. The plastic housing surrounding the fuse may become heat damaged from heat generated by the normal operation of the 30A fuse, which would cause the solar panel system to not operate as designed. Due to updated recommendations from Go Power!, Tiffin Motorhomes is removing this 30A fuse from the solar panel system.
CSA-039
Other
Cummins Inc has launched a campaign that may affect your Model Year 2021-2022 L9 CM2450 L126B engine. Our records indicate that you engine may have been built with incorrect torqueing on the speed indicator ring bolts. If left unchecked, the engine may fail. This campaign (C7024) will provide the required parts to complete the repair. The parts and labor for this repair will be provided to you at no cost. Contact the nearest Cummins Distributor or authorized Warranty Dealer to arrange to have this campaign performed on your engine.
CSA-026
Service Bulletin/Repair Instructions
Some 2023 year models of Tiffin Motorhomes built on PowerGlide chassis have a Federal Certification Label that does not have the tire information listed. To correct this issue, we are sending dealers and owners of involved units a corrected Federal Certification label to be placed in the involved motorhomes.