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Service bulletin SC-20-011

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 id11014093
Published by NHTSA2025-02-11
Manufacturer's numberSC-20-011
Manufacturer's date2020-01-17
Campaign id or software versionSC-20-011
NHTSA componentELECTRICAL SYSTEM

NHTSA's summary

Transit bus software upgrade to the body, vehicle and dash controllers to improve diagnostic fault handling, remove unused parameters to simplify EEPROMs.

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.