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Service bulletin FSB 366 002

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 id10200207
Published by NHTSA2021-08-09
Manufacturer's numberFSB 366 002
Manufacturer's date2016-03-01
NHTSA componentEQUIPMENT:ELECTRICAL; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; FORWARD COLLISION AVOIDANCE: SENSING SYSTEM: RADAR

NHTSA's summary

Certain MACK CHU, CXU, and GU trucks built between 11/11/2013 and 01/14/2015, equipped with front radar may experience loss of front object detection or erratic operation of cruise control functions. The terminal seals of the harness is allowing moisture and corrosion to build up in the front radar harness. To ensure proper operation of the front radar, the harness is inspected for the proper seal and/or corrosion. If the harness or seal fail inspection, replacement of the harness is required. Follow the inspection and repair procedures outlined in this document.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Driver assistance, Equipment and accessories, Adaptive cruise control

Vehicles listed
MACK CHU2013 to 2016
MACK CXU2013 to 2016
MACK GU2013 to 2016

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