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Service bulletin T2143B

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 id10175187
Published by NHTSA2020-05-18
Manufacturer's numberT2143B
Manufacturer's date2020-04-07
NHTSA componentEQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT; ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER

NHTSA's summary

This Temporary Repair Practice is being issued to address Variable Geometry Turbocharger Actuator failures on certain ISL9 CM2350 L101 engines. This TRP authorizes certified repair locations to replace the Variable Geometry Turbocharger Actuator if fault codes or troubleshooting lead to a confirmed failure of the component. This is an update 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, Equipment and accessories, Turbocharger or supercharger

Vehicles listed
CUMMINS ISL9

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