Technical Service Bulletin 21-NA-155 — 2021 GMC SIERRA 3500
EQUIPMENT
Bulletin Details
| TSB ID | 21-NA-155 |
| Manufacturer | |
| Vehicle | 2021 GMC SIERRA 3500 |
| Component | EQUIPMENT |
| Communication Date |
Bulletin Summary
This informational bulletin advises the technician to check for faults that may be caused by the trailer otherwise found by a possible faulty trailer connector.
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 2021 GMC SIERRA 3500
PIP6052
UNKNOWN OR OTHER
PIT5697D
UNKNOWN OR OTHER
N242454441
POWER TRAIN
General Communication
ELECTRICAL SYSTEM
22-NA-150
EQUIPMENT
07-08-42-006S
ELECTRICAL SYSTEM
PIT5865B
FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
20-NA-198
EQUIPMENT
23-NA-059
EQUIPMENT
20-NA-203
ELECTRICAL SYSTEM