WenmarOpen by Wenmar Pro

Service bulletin TSB200123-060920

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 id10177348
Published by NHTSA2020-07-20
Manufacturer's numberTSB200123-060920
Manufacturer's date2020-06-09
NHTSA componentEQUIPMENT:ELECTRICAL; ENGINE

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of the potential for the Check Engine Lamp, Stop Engine Lamp, Malfunction Indicator Lamp, and Low Fuel Pressure Lamp are illuminated always after upfitting the engine to a CM2380 ECM.

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

Vehicles listed
CUMMINS ISL G
CUMMINS ISX12 G

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