Service bulletin CBR 2443 072025
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 | 11021294 |
| Published by NHTSA | 2025-08-04 |
| Manufacturer's number | CBR 2443 072025 |
| Manufacturer's date | 2025-07-09 |
| NHTSA component | UNKNOWN OR OTHER; STRUCTURE:BODY |
NHTSA's summary
CBR - The truck’s trailer detection system uses a brief pulse of compressed air through the red trailer supply line to detect a connected trailer, but this pulse can inadvertently re-lock air-actuated tandem slide systems; this procedure outlines a method to mitigate the issue while sliding the trailer tandems.
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
Body and frame
| VOLVO VNL (4) | 2025 to 2026 |
|---|
Listing a model year does not mean every vehicle of it is concerned: the document says which.