Technical Service Bulletin 21NA127 — 2020 CADILLAC XT4
ELECTRICAL SYSTEM:ADAS:HUD:SOFTWARE
Bulletin Details
| TSB ID | 21NA127 |
| Manufacturer | |
| Vehicle | 2020 CADILLAC XT4 |
| Component | ELECTRICAL SYSTEM:ADAS:HUD:SOFTWARE |
| Communication Date |
Bulletin Summary
This technical bulletin provides repair information to correct a customer concern of Head Up Display (HUD) Blank, Non-Responsive to Brightness, Aim, or Page Controls, DTC U1518 Set.
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.
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