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Service bulletin SC-21-130

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 id11013833
Published by NHTSA2025-02-06
Manufacturer's numberSC-21-130
Manufacturer's date2021-07-29
Campaign id or software versionSC-21-130
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Transit bus repair to replace the 5 position door switch with a more robust door selector switch.

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 CATALYST2019

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