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Service bulletin SS284TBB2021

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 id10198598
Published by NHTSA2021-06-29
Manufacturer's numberSS284TBB2021
Manufacturer's date2021-06-14
NHTSA componentVISIBILITY; ENGINE AND ENGINE COOLING

NHTSA's summary

Service Solution for TBB C2 with DD5 engine for low dash heat.

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

Engine, Glass, wipers and mirrors

Vehicles listed
THOMAS BUILT BUSES SAF-T-LINER C22021 to 2022

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