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Service bulletin TSB-01-003-DDC

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 id11031991
Published by NHTSA2026-05-02
Manufacturer's numberTSB-01-003-DDC
Manufacturer's date2026-04-07
NHTSA componentENGINE

NHTSA's summary

Revised Technical Service Bulletin for Gen 5 Head Gasket Compression Seal Failure Repair Path Update

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

Engine

Vehicles listed
DETROIT DIESEL DD15

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