Technical Service Bulletin 20NA038 — 2018 GMC SIERRA 2500
ENGINE
Bulletin Details
| TSB ID | 20NA038 |
| Manufacturer | |
| Vehicle | 2018 GMC SIERRA 2500 |
| Component | ENGINE |
| 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.
Other TSBs for the 2018 GMC SIERRA 2500
17-NA-331
UNKNOWN OR OTHER
PIT5161K
FUEL SYSTEM, GASOLINE:STORAGE
20NA181
ELECTRICAL SYSTEM:SOFTWARE
20NA187
POWER TRAIN
20NA166
ENGINE AND ENGINE COOLING
20NA139
ELECTRICAL SYSTEM
20NA101
SERVICE BRAKES
N192264210-02
FUEL SYSTEM, DIESEL: PRE-HEATER
20NA043
ENGINE
20NA043
EQUIPMENT ADAPTIVE/MOBILITY