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Service bulletin ATC2424

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 id10202372
Published by NHTSA2021-10-25
Manufacturer's numberATC2424
Manufacturer's date2021-08-17
NHTSA componentENGINE AND ENGINE COOLING

NHTSA's summary

This Account Team Coverage is being issued to address oil consumption above published specification limits which in some cases may result in knock faults, repeat misfire, engine miss, rough running, and/or low power. This ATC authorizes certified repair locations to replace the current pistons and cylinder liners with new and improved parts, as well as claim costs associated with cleaning the exhaust valves.

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
CUMMINS ISX12

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