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Service bulletin December TSB 3

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 id10248644
Published by NHTSA2024-01-09
Manufacturer's numberDecember TSB 3
Manufacturer's date2024-01-08
NHTSA componentEQUIPMENT

NHTSA's summary

Attic Vents and solar ports on affected units may prematurely crack allowing for water infiltration. TSB 23-003. Issued December 29th, 2023. PDF attached .

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

Equipment and accessories

Vehicles listed
GRAND DESIGN IMAGINE2022 to 2023
GRAND DESIGN REFLECTION2023 to 2024
GRAND DESIGN TRANSCEND2022 to 2023

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