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Service bulletin BS3717ER1

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 id10110104
Published by NHTSA2017-08-03
Manufacturer's numberBS3717ER1
Manufacturer's date2017-05-17
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE

NHTSA's summary

Flexible bellows N79197 may have an exhaust leak near the rigid exhaust pipe

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, Exhaust and emissions, Exhaust manifold, pipes and muffler

Vehicles listed
NOVA BUS LFS2015, 2016

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

Other bulletins for the same vehicles and component
FT45372019-04-30. Service bulletin. Exhaust Pipe Clamp Loose
BS4045E2017-08-03. Service bulletin. Heat from a drain on the exhaust may damage the rear left corner panel