Service bulletin 21NA137
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 10200139 |
| Published by NHTSA | 2021-08-09 |
| Manufacturer's number | 21NA137 |
| Manufacturer's date | 2021-06-14 |
| NHTSA component | EXTERIOR LIGHTING:HEADLIGHTS |
NHTSA's summary
This service bulletin provides information for dealers/technicians on headlamp beam shadow appearance, and/or driver side to passenger side beam appears unlevel.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Lighting, Headlights
| CADILLAC CT4 | 2020, 2021 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.