Service campaign S4342 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 | 11029453 |
| Published by NHTSA | 2026-03-03 |
| Manufacturer's number | S4342 022026 |
| Manufacturer's date | 2026-02-01 |
| NHTSA component | FUEL/PROPULSION SYSTEM |
NHTSA's summary
SC - Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications.
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
Fuel system
| MACK ANTHEM (AN) | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| MACK GRANITE (GR) | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| MACK LR | 2024, 2025 |
| MACK PINNACLE (PI/PN) | 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| MACK TERRAPRO (TE) | 2024, 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 2107-21 202505 | 2025-06-02. Service bulletin. Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer |
|---|---|
| S4342-202502 | 2025-03-03. Service bulletin. Mack Trucks has determined that a select group of trucks were built with an AHI Module fuel pressure sensor which does not meet our specifications. |
| S4216 202409 | 2024-10-04. Service campaign. Service Campaign: Mack Natural Gas Fuel Filter Bracket |
| CBR-570 202409 | 2024-10-03. Service bulletin. CBR: US17 GHG Common Rail Fuel System Component Electrical Faults - Model Year 2017 To 2024 |
| CBR-2139 202405 | 2024-06-04. Service bulletin. CBR: Vehicles built with an 11 liter engine may experience a complaint of excessive fuel in the oil. It is possible that the source of the fuel is the rear fuel galley plug in the cylinder head. A new and improved fuel galley plug has been developed to resolve this issue. |
| KC-331-Ver6 | 2023-06-05. Service bulletin. CBR: Model Year 2017 to Current - Fuel Filter Change ( Primary And Secondary ) For The EM - USA17 Emission Engines |