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Service bulletin CALDDC01-002B

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 id10244754
Published by NHTSA2023-11-03
Manufacturer's numberCALDDC01-002B
Manufacturer's date2023-10-04
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

Customer Advosiry Letter for Gen 5 DD15 Proactive Exhaust Rocker Arm Replacement

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.