WenmarOpen by Wenmar Pro

Service bulletin 23TS-06

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 id10241567
Published by NHTSA2023-09-02
Manufacturer's number23TS-06
Manufacturer's date2023-08-03
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Detroit Technical Service Letter for Gen 5 DD15 (472912) External Coolant Leaks at Cylinder Head Joint.

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 DETROIT DIESEL

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