# 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

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029453-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11029453-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Fuel system

## Vehicles listed

- 2024 to 2025 MACK ANTHEM \(AN\)
- 2024 to 2025 MACK GRANITE \(GR\)
- 2024 to 2025 MACK LR
- 2024 to 2025 MACK PINNACLE \(PI/PN\)
- 2024 to 2025 MACK TERRAPRO \(TE\)

## Other bulletins for the same vehicles and component

- [CBR 2107\-21 202505](/bulletins/11018813.md), 2025-06-02, Service bulletin: FUEL/PROPULSION SYSTEM; ENGINE. Mack DEF Level \(UQLS\) Sensor Troubleshooting Guide \- US17\+OBD16 Emissions and Newer
- [S4342\-202502](/bulletins/11014710.md), 2025-03-03, Service bulletin: FUEL/PROPULSION SYSTEM; ENGINE. 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](/bulletins/11008397.md), 2024-10-04, Service campaign: FUEL/PROPULSION SYSTEM. Service Campaign: Mack Natural Gas Fuel Filter Bracket
- [CBR\-570 202409](/bulletins/11008374.md), 2024-10-03, Service bulletin: ELECTRICAL SYSTEM; FUEL/PROPULSION SYSTEM. CBR: US17 GHG Common Rail Fuel System Component Electrical Faults \- Model Year 2017 To 2024
- [CBR\-2139 202405](/bulletins/11000831.md), 2024-06-04, Service bulletin: FUEL/PROPULSION SYSTEM; ENGINE. 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](/bulletins/10237354.md), 2023-06-05, Service bulletin: FUEL SYSTEM, DIESEL. CBR: Model Year 2017 to Current \- Fuel Filter Change \( Primary And Secondary \) For The EM \- USA17 Emission Engines

JSON: [/v1/bulletins/11029453](/v1/bulletins/11029453)

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