WenmarOpen by Wenmar Pro

Service bulletin FSB 364-038

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 id10083103
Published by NHTSA2016-10-20
Manufacturer's numberFSB 364-038
Manufacturer's date2014-11-13
NHTSA componentTRAILER HITCHES:FIFTH WHEEL ASSEMBLY; ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL

NHTSA's summary

VEHICLE ELECTRONIC CONTROL UNIT (VECU), REPROGRAMMING, FIFTH WHEEL SLIDE. C ERTAIN MACK CHU, CXU, GU, AND TD TRUCKS EQUIPPED WITH AN AIR SLIDE FIFTH WHEEL, AND BUILT 08/18/2014 THROUGH 11/07/2014, MAY DISPLAY A “FIFTH WHEEL SLIDE FAULT” MESSAGE IN THE INSTRUMENT CLUSTER WHEN THE VEHICLE SHUTS OFF DURING IDLE SHUTDOWN. THIS CONDITION IS DUE TO A PARAMETER PROGRAMMING ISSUE.

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

Electrical system, Trailer hitch, Instrument cluster

Vehicles listed
MACK CHU2015
MACK CXU2015
MACK GU2015
MACK TD2015

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