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Service bulletin MYCOM_032621-1

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 id10200689
Published by NHTSA2021-08-30
Manufacturer's numberMYCOM_032621-1
Manufacturer's date2021-03-26
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

M2 Bulkhead Module Shortage To our Dealer Partners, As a follow up to the DTNA Executive Webinar broadcast to the dealer body on March 16 2021 at12:00pm Pacific, we all understand there is a global shortage of computer chips that unfortunately, will impact our M2 product production. With reference to Table 1 below, the goal of this communication is to provide the part numbers of the affected modules in question and Aftermarket decisions based upon the situation. If you obtain or have any modules in inventory, the current software and Truck models are provided. These module part numbers are now on manual allocation when ordered from DTNA until the situation is rectified.

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

Electrical system

Vehicles listed
FREIGHTLINER BUSINESS CLASS M22022

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