Technical Service Bulletin 20-NA-203 — 2022 GMC SIERRA 3500
ENGINE
Bulletin Details
| TSB ID | 20-NA-203 |
| Manufacturer | |
| Vehicle | 2022 GMC SIERRA 3500 |
| Component | ENGINE |
| Communication Date |
Bulletin Summary
This informational bulletin explains how the regen works for the DEF system and how it works at different levels.
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 2022 GMC SIERRA 3500
22-NA-106
WHEELS
N222375791-05
ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS
N222371151-06
STEERING
N222375791-02
ELECTRICAL SYSTEM:ADAS:PARKING ASSIST:SENSORS
N212351211
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
N222388120
SUSPENSION
N222379652-01
STRUCTURE
22-NA-225
POWER TRAIN
N222367650
POWER TRAIN
PIT5927A
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL