# Service bulletin CBR\-2139 202405

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: 11000831
- Published by NHTSA: 2024\-06\-04
- Manufacturer's number: CBR\-2139 202405
- Manufacturer's date: 2024\-05\-02
- NHTSA component: FUEL/PROPULSION SYSTEM; ENGINE

## NHTSA's summary

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 document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2024/MC-11000831-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2024/MC-11000831-9999.pdf)

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

## Components

Engine, Fuel system

## Vehicles listed

- 2017 MACK ANTHEM \(AN\)
- 2018 to 2025 MACK ANTHEM \(AN\)
- 2006 to 2018 MACK CXU
- 2019 to 2025 MACK GRANITE \(GR\)
- 2007 to 2016 MACK GRANITE \(GU\)
- 2017 to 2019 MACK GRANITE \(GU\)
- 2007 to 2017 MACK LEU
- 2015 to 2025 MACK LR
- 2007 MACK MRU
- 2011 to 2018 MACK MRU
- 2019 to 2025 MACK TE
- 2017 to 2018 MACK TERRAPRO \(TE\)

## Recalls for the same vehicles and component

- [25V256000](/recalls/nhtsa/25V256000.md), 2025-04-17: ENGINE AND ENGINE COOLING:ENGINE:DIESEL
- [2023588](/recalls/tc/2023588.md), 2023-10-31: Engine
- [23V731000](/recalls/nhtsa/23V731000.md), 2023-10-31: ENGINE
- [15V702000](/recalls/nhtsa/15V702000.md), 2015-10-26: ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER

## Other bulletins for the same vehicles and component

- [TSB M\-913\-001 202609](/bulletins/11037730.md), 2026-10-02, Service bulletin: ENGINE; POWER TRAIN. Parker engine\-mounted hydraulic pump service bulletin.
- [S4533 202608](/bulletins/11036596.md), 2026-09-02, Service campaign: ENGINE. Mack Trucks has determined that certain AN model trucks equipped with an MP8 Turbo Compound \(TC\) engine may experience TC Double Idler Gear failure due to incorrect bearing preload. TC units within this population are suspected to be affected, which could result in failure and potential engine damage. For the affected vehicle population, please follow the instructions provided below to remove the TC unit, replace the double idler gear with a new one, and reinstall the TC unit.
- [M0304 EC0033 202606](/bulletins/11034136.md), 2026-06-29, Emissions: ENGINE. Mack Trucks has determined that certain vehicles equipped with a model year \(“MY”\) 2017\-2018 MP8 Turbo Compound \(TC\) engine may not meet California and Federal Regulations \(CARB\). This Recall is for updated software that will reduce the amount of time necessary for the system to operate in a cold engine warm\-up strategy and provide health monitoring of the Selective Catalyst Reduction \(SCR\).
- [CBR\-2592\-1 202606](/bulletins/11034135.md), 2026-06-29, Service bulletin: ENGINE. The purpose of this CBR is to provide steps on how to correct a customer complaint of DTC P107B86 accompanied With intermittent loss of throttle.
- [M0039 032026](/bulletins/11030590.md), 2026-04-02, Emissions: ENGINE. Emissions \- EC0039 MST21 Failure to Detect P20EE \- AN, CHU.
- [S4342 022026](/bulletins/11029453.md), 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.
- [M0302 022026](/bulletins/11029451.md), 2026-03-03, Emissions: ENGINE. Emissions \- Mack Trucks has determined that certain vehicles equipped with a model year \(“MY”\) 2017\-2018 MP7 engine may not meet California and Federal Regulations \(CARB\).
- [CBR 820\-9 202601](/bulletins/11028051.md), 2026-02-03, Service bulletin: ENGINE; VEHICLE SPEED CONTROL. CBR \- Mack Chassis \- Engine Brake Only Works With The Brake Pedal, No Function During Cruise. US07 And Newer Emissions, Model Year 2008 And Newer.
- [CBR 2128\-7 202601](/bulletins/11028033.md), 2026-02-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM. CBR \- Engine Control Module \(EMS\) Software Information \- Improvement List \(Change Log\), US21\+OBD2021 Emissions ONLY
- [CBR 2107\-22 202601](/bulletins/11028032.md), 2026-02-02, Service bulletin: ENGINE. CBR \- Mack DEF Level \(UQLS\) Sensor Troubleshooting Guide \- US17\+OBD16 Emissions to US22\+OBD2023 \(DOES NOT APPLY TO AN\(4\) and PR\(4\)\).

JSON: [/v1/bulletins/11000831](/v1/bulletins/11000831)

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