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Service bulletin SB-S-40-RN

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 id10043401
Published by NHTSA2012-03-27
Manufacturer's numberSB-S-40-RN
Manufacturer's date2010-04-15
NHTSA componentENGINE AND ENGINE COOLING:ENGINE

NHTSA's summary

BLUE BIRD BUS: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. ON CERTAIN MODEL YEAR BUSES, THE HEAT SHIELDS HAS BEEN ELIMINATED AND MAY CAUSE THE KNOCK SENSOR TO FAIL DUE TO EXCESSIVE HEAT. *PE

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Engine

Vehicles listed
BLUE BIRD VISION2009 to 2010

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