# Service bulletin KC\-331\-Ver6

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: 10237354
- Published by NHTSA: 2023\-06\-05
- Manufacturer's number: KC\-331\-Ver6
- Manufacturer's date: 2023\-05\-22
- NHTSA component: FUEL SYSTEM, DIESEL

## NHTSA's summary

CBR: Model Year 2017 to Current \- Fuel Filter Change \( Primary And Secondary \) For The EM \- USA17 Emission Engines

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237354-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10237354-9999.pdf)

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

## Components

Fuel system

## Vehicles listed

- 2017 MACK ANTHEM \(AN\)
- 2018 to 2024 MACK ANTHEM \(AN\)
- 2017 to 2018 MACK CHU
- 2017 to 2018 MACK CXU
- 2017 to 2024 MACK GRANITE \(GR\)
- 2017 to 2023 MACK GRANITE \(GU\)
- 2017 to 2018 MACK GU
- 2017 MACK LEU
- 2017 to 2024 MACK LR
- 2017 to 2018 MACK MRU
- 2017 to 2022 MACK PINNACLE \(CHU\)
- 2017 to 2022 MACK PINNACLE \(CXU\)
- 2018 to 2024 MACK PINNACLE \(PI/PN\)
- 2017 to 2019 MACK TD
- 2019 to 2021 MACK TE
- 2017 to 2019 MACK TERRAPRO \(LEU/MRU\)
- 2017 to 2024 MACK TERRAPRO \(MRU\)
- 2017 to 2018 MACK TERRAPRO \(TE\)
- 2022 to 2024 MACK TERRAPRO \(TE\)
- 2017 to 2018 MACK TITAN \(TD\)

## Other bulletins for the same vehicles and component

- [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.
- [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
- [CBR 445\- 11 202505](/bulletins/11018806.md), 2025-06-02, Service bulletin: FUEL/PROPULSION SYSTEM. Vehicles Equipped With a Common Rail Fuel System \- Aftermarket Secondary Fuel Filters, Important Information On Approved Filters \- US17\+OBD16 toUS21\+OBD23
- [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](/bulletins/10233500.md), 2023-04-04, Service bulletin: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; FUEL SYSTEM, DIESEL. Model Year 2017, 2018 \- Fuel Filter Change \( Primary And Secondary \) For The EM \- USA17 Emission Engines
- [KC\-2139](/bulletins/10219304.md), 2022-09-07, Service bulletin: ENGINE AND ENGINE COOLING; FUEL SYSTEM, DIESEL. fuel in the oil inspection
- [KC\-2157](/bulletins/10215309.md), 2022-07-05, Service bulletin: ENGINE AND ENGINE COOLING; FUEL SYSTEM, GASOLINE. Aftertreatment Hydrocarbon Injector \(AHI\) Troubleshooting Guide \- US10\+OBD13 And Newer Emissions.

JSON: [/v1/bulletins/10237354](/v1/bulletins/10237354)

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