Service campaign S4373 022026
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 campaign |
|---|---|
| NHTSA id | 11029455 |
| Published by NHTSA | 2026-03-03 |
| Manufacturer's number | S4373 022026 |
| Manufacturer's date | 2026-02-26 |
| NHTSA component | STRUCTURE:BODY |
NHTSA's summary
SC - Mack Trucks has determined that certain Mack sleeper cab assemblies were possibly manufactured with an insufficient number of welds across the rear flange of the upper header
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
| MACK ANTHEM (AN) | 2025 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| MACK PINNACLE (PI/PN) | 2025 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| CBR 2575-1 202604 | 2026-05-05. Service bulletin. CBR - Mack Chassis - Dash Panel Cracking at Mounting to BIW. |
|---|---|
| CBR 2432-2 202601 | 2026-02-03. Service bulletin. CBR - Mack Chassis - AN And GR Models - Door Glass Shattering. |
| S4373-202502 | 2025-03-03. Service campaign. Mack Trucks has determined that certain Mack sleeper cab assemblies were possibly manufactured with an insufficient number of welds across the rear flange of the upper header. The reduced number of welds could lower the designed cab integrity. |
| CBR-2384 202407 | 2024-08-01. Service bulletin. CBR: Mack Chassis - Day Cab Glass Breakage |
| CBR-2384 202406 | 2024-07-03. Service bulletin. CBR - Mack Chassis - Day Cab Glass Breakage |