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Service bulletin SM1603

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 id10128590
Published by NHTSA2018-02-12
Manufacturer's numberSM1603
Manufacturer's date2016-03-08
NHTSA componentENGINE

NHTSA's summary

J1939 500k Datalink (Green Diagnostic Port Connector): Dealer Memo to share information on Blue Bird buses equipped with New 2016 Cummins ISB and ISL engine features use 250k and 500k J1939 datalink circuits, and have a Type 2 (Green Diagnostic Port Connector). Date Range: January 18, 2016 - Forward

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

Vehicles listed
BLUE BIRD VISION2017 to 2018

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