Technical Service Bulletin SC-21-177 — 2019 PROTERRA ZX5
UNKNOWN OR OTHER
Bulletin Details
| TSB ID | SC-21-177 |
| Manufacturer | |
| Vehicle | 2019 PROTERRA ZX5 |
| Component | UNKNOWN OR OTHER |
| Communication Date |
Bulletin Summary
Transit bus repair instructions for auxiliary heat system. Replacement coolant lines that pass under the streetside wheelwell box.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.