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Service bulletin SB-76

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id11021182
Published by NHTSA2025-08-01
Manufacturer's numberSB-76
Manufacturer's date2025-07-25
Campaign id or software versionSB-76
NHTSA componentEQUIPMENT:ELECTRICAL:ACCESSORY BATTERY:CHARGE MANAGEMENT(BMS); EQUIPMENT:ELECTRICAL:ACCESSORY BATTERY; EQUIPMENT:ELECTRICAL:ACCESSORY BATTERY:THERMAL MANAGEMENT; ELECTRICAL SYSTEM

NHTSA's summary

It has come to our attention that on certain 2025 GT1 motorhomes, the wiring for the battery heat and the Spyder memory are not connected to the house battery. If the wiring is not corrected, the battery setting will not be saved when the coach is turned off.

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, Equipment and accessories

Vehicles listed
TIFFIN GT12025

Listing a model year does not mean every vehicle of it is concerned: the document says which.