Service bulletin SB-78
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11024935 |
| Published by NHTSA | 2025-11-05 |
| Manufacturer's number | SB-78 |
| Manufacturer's date | 2025-10-24 |
| Campaign id or software version | SB-78 |
| NHTSA component | ELECTRICAL SYSTEM |
NHTSA's summary
It has come to Tiffin Motorhomes attention that on certain 2025 GT1 motorhomes, the Spyder control panel may not be displaying the correct battery voltage. Tiffin Motorhomes will install a new harness to allow the Spyder control panel to display correct battery voltage and clear "charge batteries" when the batteries are at 100%.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Electrical system
| TIFFIN GT1 | 2025 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.