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Service bulletin FSB 371-046

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 id10083340
Published by NHTSA2016-10-22
Manufacturer's numberFSB 371-046
Manufacturer's date2014-03-04
NHTSA componentSTRUCTURE; EQUIPMENT

NHTSA's summary

FRAME RAIL GROUND STUD, ON CERTAIN MACK TRUCKS BUILT FROM 01/01/2010 TO 10/7/2013 THE MAIN GROUND STUD, LOCATED ON THE FRAME RAIL BEHIND THE BATTERY BOX, MAY HAVE BEEN IMPROPERLY TORQUED. THIS IMPROPER TORQUE MAY HAVE ALLOWED CORROSION INHIBITOR TO GET BETWEEN THE RING TERMINALS WHICH MAY CAUSE MULTIPLE FAULT CODES AND/OR INTERMITTENT ISSUES.

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

Body and frame, Equipment and accessories

Vehicles listed
MACK CHU2011 to 2014
MACK CXU2011 to 2014
MACK GU2011 to 2014
MACK TD2011 to 2014

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