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Service bulletin TSB260140

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 id11037912
Published by NHTSA2026-10-05
Manufacturer's numberTSB260140
Manufacturer's date2026-09-15
NHTSA componentFUEL/PROPULSION SYSTEM

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution steps for the internal refrigerant chiller coolant adapter of certain battery electric systems which may leak, resulting in coolant leaking out of the chiller housing.

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

Fuel system

Vehicles listed
CUMMINS BES

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