Technical Service Bulletin 21NA020 — 2019 CHEVROLET 4500HD
BACK OVER PREVENTION
Bulletin Details
| TSB ID | 21NA020 |
| Manufacturer | |
| Vehicle | 2019 CHEVROLET 4500HD |
| Component | BACK OVER PREVENTION |
| Communication Date |
Bulletin Summary
This technical bulletin provides a procedure to correct a click type noise heard from the starter when cranking.
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.
Other TSBs for the 2019 CHEVROLET 4500HD
N202299830
EQUIPMENT ADAPTIVE/MOBILITY
060089029T
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL