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Service bulletin TSB220122

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 id10250890
Published by NHTSA2024-03-02
Manufacturer's numberTSB220122
Manufacturer's date2024-02-29
NHTSA componentENGINE AND ENGINE COOLING:EXHAUST SYSTEM; ENGINE AND ENGINE COOLING

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of Exhaust Gas Recirculation (EGR) coolant leaks caused by corrosion of the gas tubes due to certain truck wash chemicals. This is a revision to a previously submitted communication.

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, Exhaust and emissions

Vehicles listed
CUMMINS ISX12
CUMMINS ISX12 G
CUMMINS POWER GENERATOR
CUMMINS X12
CUMMINS X15

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