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Service bulletin FSB 373-018

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 id10083652
Published by NHTSA2016-10-27
Manufacturer's numberFSB 373-018
Manufacturer's date2013-11-07
NHTSA componentPOWER TRAIN

NHTSA's summary

ON SOME MACK MODELS BUILT WITH AN ALLISON TRANSMISSION, BETWEEN MAY 16, 2011 AND AUGUST 9, 2013, MAY EXPERIENCE MULTIPLE OPEN CIRCUITS IN THE 31 WAY TRANSMISSION CONNECTOR. THIS IS DUE TO A SUPPLIER MANUFACTURING ISSUE WITH THE CONNECTOR.

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

Transmission and driveline

Vehicles listed
MACK LEU2012 to 2014
MACK MRU2012 to 2014

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