Technical Service Bulletin 20NA203 — 2019 GMC SIERRA 3500
ELECTRICAL SYSTEM
Bulletin Details
| TSB ID | 20NA203 |
| Manufacturer | |
| Vehicle | 2019 GMC SIERRA 3500 |
| Component | ELECTRICAL SYSTEM |
| 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 2019 GMC SIERRA 3500
21-NA-043
VISIBILITY/WIPER
PIT5386J
BACK OVER PREVENTION
N212346580-01
ELECTRICAL SYSTEM
N212346580-01
ELECTRICAL SYSTEM:PROPULSION SYSTEM
N192264210
EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL
20NA203
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM
PIT5311F
ELECTRICAL SYSTEM: INTEGRATED TRAILER BRAKE CONTROL
PIT5206G
SERVICE BRAKES
N192282190
EQUIPMENT
080310006G
WHEELS