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Service bulletin IB-23-132

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 id11011233
Published by NHTSA2024-12-04
Manufacturer's numberIB-23-132
Manufacturer's date2024-02-20
Campaign id or software versionIB-23-132
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Repair instructions to support transit buses when a charge shunt fails. If the installed charge shunt were to fail we can replace with the original shunt installed, therefore this instruction set provides documentation for installing an alternative.

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

Electrical system

Vehicles listed
PROTERRA CATALYST2017 to 2019

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