Service bulletin SC-21-177
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 | 11013369 |
| Published by NHTSA | 2025-02-02 |
| Manufacturer's number | SC-21-177 |
| Manufacturer's date | 2022-07-13 |
| Campaign id or software version | SC-21-177 |
| NHTSA component | UNKNOWN OR OTHER |
NHTSA's summary
Transit bus repair instructions for auxiliary heat system. Replacement coolant lines that pass under the streetside wheelwell box.
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.
| PROTERRA CATALYST | 2019 to 2020 |
|---|---|
| PROTERRA ZX5 | 2019 to 2020 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.