Technical Service Bulletin 21NA199 — 2019 CHEVROLET SILVERADO 4500
POWER TRAIN
Bulletin Details
| TSB ID | 21NA199 |
| Manufacturer | |
| Vehicle | 2019 CHEVROLET SILVERADO 4500 |
| Component | POWER TRAIN |
| Communication Date |
Bulletin Summary
This informational bulletin advises the technician to replace the TBV if the transmission has any type of repair even if no problem was found, to replace the tbv.
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.