Technical Service Bulletin 20-NA-038 — 2020 CHEVROLET 4500XD
FUEL/PROPULSION SYSTEM
Bulletin Details
| TSB ID | 20-NA-038 |
| Manufacturer | |
| Vehicle | 2020 CHEVROLET 4500XD |
| Component | FUEL/PROPULSION SYSTEM |
| Communication Date |
Bulletin Summary
This informational bulletin explains the difference in AFM and DFM engines and what is and is not activated during this occurrence.
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.