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Service bulletin SC-20-035

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 id11014079
Published by NHTSA2025-02-10
Manufacturer's numberSC-20-035
Manufacturer's date2021-10-04
Campaign id or software versionSC-20-035
NHTSA componentFUEL/PROPULSION SYSTEM

NHTSA's summary

Transit bus repair to replace a fitting on the fire suppression system that has potential to chaff against aux heat components.

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

Fuel system

Vehicles listed
PROTERRA CATALYST2019

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