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Service bulletin FSB 284-063

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 id10083528
Published by NHTSA2016-10-25
Manufacturer's numberFSB 284-063
Manufacturer's date2015-09-09
NHTSA componentENGINE

NHTSA's summary

ENGINE CONTROL MODULE (ECM). CERTAIN MACK GU VEHICLES BUILT BETWEEN DECEMBER, 2012 AND AUGUST 2015, WITH CUMMINS ISL ENGINE, SERIAL NUMBER 73881385 AND LESS, MAY EXPERIENCE INCOMPLETE DIAGNOSTIC TROUBLE CODES (DTC) INFORMATION DISPLAYED ON THE INSTRUMENT CLUSTER IF TWO OR MORE ARE ACTIVE SIMULTANEOUSLY. CUMMINS ENGINE ECM CALIBRATION TRANSFER FROM ELECTRONIC SYSTEMS DATABASE AND NETWORK (ESDN) USING INSITE IS REQUIRED TO CORRECT THIS ISSUE. REFER TO THE INSITE USER'S MANUAL.

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
MACK GU2013 to 2016

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