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Service bulletin FSB-373-019

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 id10054057
Published by NHTSA2013-12-18
Manufacturer's numberFSB-373-019
Manufacturer's date2013-11-01
NHTSA componentPOWER TRAIN:AUTOMATIC TRANSMISSION

NHTSA's summary

MACK: DUE TO SUPPLIER MANUFACTURING ISSUE WITH CONNECTOR, SOME TRUCKS MAY EXPERIENCE MULTIPLE OPEN CIRCUITS IN 31 WAY TRANSMISSION CONNECTOR AND WOULD TO BE INSPECTED AND IF NEEDED, REPAIRED AND REPLACED. MODEL 2011-2013 CHU, CXU, GU, TD. *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

Transmission and driveline, Automatic transmission

Vehicles listed
MACK CHU2013
MACK GRANITE (GU)2012 to 2013
MACK GU2011
MACK PINNACLE (CHU)2011 to 2012
MACK PINNACLE (CXU)2011 to 2013
MACK TD2012

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