Service bulletins for the 2025 Mack LR
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.
31 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
Only bulletins with component: Fuel system are shown. Show all
| S4342 022026 | 2026-03-03. Service campaign. FUEL/PROPULSION SYSTEM. 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. |
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| CBR 2107-21 202505 | 2025-06-02. Service bulletin. FUEL/PROPULSION SYSTEM; ENGINE. Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer |
| S4342-202502 | 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. |
| CBR-2139 202405 | 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. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.