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Service bulletin M-392-004B

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 id10209852
Published by NHTSA2022-04-05
Manufacturer's numberM-392-004B
Manufacturer's date2022-03-23
NHTSA componentUNKNOWN OR OTHER; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

NHTSA's summary

Radio, Replacement (revised from FSB 392-004)

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

Equipment and accessories

Vehicles listed
MACK LEU2007 to 2017
MACK LR
MACK MRU2007
MACK MRU2011 to 2018

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