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Service bulletin CK17-26

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 id10118757
Published by NHTSA2017-10-12
Manufacturer's numberCK17-26
Manufacturer's date2017-09-29
NHTSA componentENGINE

NHTSA's summary

On the vehicles affected by this bulletin, it is now possible to disable the engine brake automatic function by running accessory kit # 23181730.

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
PREVOST H3-452016 to 2018
PREVOST X32016 to 2018

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