Technical Service Bulletin 12-01-37-001F — 2021 CHEVROLET 4500HD
EQUIPMENT
Bulletin Details
| TSB ID | 12-01-37-001F |
| Manufacturer | |
| Vehicle | 2021 CHEVROLET 4500HD |
| Component | EQUIPMENT |
| Communication Date |
Bulletin Summary
This service bulletin provides information to dealership personnel on a new refrigerant (R1234yf) for A/C service.
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.