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Service bulletin FSB-922-003

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 id10040055
Published by NHTSA2011-08-15
Manufacturer's numberFSB-922-003
Manufacturer's date2011-01-01
NHTSA componentTRAILER HITCHES:FIFTH WHEEL ASSEMBLY

NHTSA's summary

MACK TRUCKS: SOME OF THE FIFTH WHEEL MOUNTING HARDWARE MAY BE CONTACTING THE HUCK BOLTS THAT ARE USED TO MOUNT THE FIFTH WHEEL MOUNTING BRACKETS TO THE FRAME. THERE IS A PROCEDURE TO ADDRESS THE ISSUE. *RM

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

Trailer hitch

Vehicles listed
MACK CHU2008 to 2010
MACK CXU2008 to 2010

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