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Service bulletin TSB190187-111820

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 id10169292
Published by NHTSA2019-12-16
Manufacturer's numberTSB190187-111820
Manufacturer's date2019-11-18
NHTSA componentPOWER TRAIN

NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of an incorrect transmission shift calibration in the Transmission Control Unit.

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

Transmission and driveline

Vehicles listed
CUMMINS ISX12

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