# Service bulletin SC\-21\-158

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.

- Type: Service bulletin
- NHTSA id: 11013375
- Published by NHTSA: 2025\-02\-03
- Manufacturer's number: SC\-21\-158
- Manufacturer's date: 2022\-04\-22
- Campaign id or software version: SC\-21\-158
- NHTSA component: STRUCTURE:BODY

## NHTSA's summary

Transit bus repair for the ADA ramp closeout bracket on the exterior of the bus. The replacement part is made from stainless steel reducing the previous mild steel that was corroding.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2022/MC-11013375-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2022/MC-11013375-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Body and frame

## Vehicles listed

- 2019 to 2021 PROTERRA CATALYST
- 2019 to 2021 PROTERRA ZX5

JSON: [/v1/bulletins/11013375](/v1/bulletins/11013375)

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