Service bulletin CBR-561 202503
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 | 11016342 |
| Published by NHTSA | 2025-04-02 |
| Manufacturer's number | CBR-561 202503 |
| Manufacturer's date | 2025-03-06 |
| NHTSA component | ENGINE |
NHTSA's summary
If oil dilution is suspected refer to the applicable CBR solution below: ∙ CBR-659Mack Chassis - Oil Diluted With Fuel; Fuel In Oil, Diagnostic Information - All Emissions, All Model Years
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
Engine
| MACK ANTHEM (AN) | 2016 to 2017 |
|---|---|
| MACK ANTHEM (AN) | 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| MACK CHU | 2011 to 2018 |
| MACK CXU | 2011 to 2018 |
| MACK GRANITE (GR) | 2019, 2020, 2021, 2022, 2023, 2024, 2025 (the catalog's model; the bulletin names a series or trim of it) |
| MACK GRANITE (GU) | 2011 to 2016 |
| MACK GRANITE (GU) | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| MACK LEU | 2011 to 2017 |
| MACK LR | 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| MACK MD | 2020, 2021, 2022, 2023, 2024, 2025 |
| MACK MRU | 2011 to 2018 |
| MACK PINNACLE (PI/PN) | 2016 |
| MACK PINNACLE (PI/PN) | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MACK PIONEER PR (4) | 2025 (the catalog's model; the bulletin names a series or trim of it) |
| MACK TD | 2011 to 2019 |
| MACK TERRAPRO (TE) | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 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.
| 26V139000 | 2026-03-11. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE |
|---|---|
| 25V256000 | 2025-04-17. ENGINE AND ENGINE COOLING:ENGINE:DIESEL |
| 2023588 | 2023-10-31. Engine |
| 23V731000 | 2023-10-31. ENGINE |
| 22V606000 | 2022-08-09. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM) |
| 15V702000 | 2015-10-26. ENGINE AND ENGINE COOLING:ENGINE:OTHER FUEL TYPES:TURBO/SUPERCHARGER |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| TSB M-913-001 202609 | 2026-10-02. Service bulletin. Parker engine-mounted hydraulic pump service bulletin. |
|---|---|
| S4533 202608 | 2026-09-02. Service campaign. 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. |
| TSB M257005 202608 | 2026-09-01. Service bulletin. Loose CCV mounting bolts and oil leak at CCV due to cracking of the housing. Mounting hardware found to be under-torqued after the vehicle was delivered. |
| CBR 2596 202608 | 2026-09-01. Service bulletin. The purpose of this CBR is to provide steps on how to correct a customer complaint of a no crank/engine start condition. |
| M0304 EC0033 202606 | 2026-06-29. Emissions. 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 | 2026-06-29. Service bulletin. 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. |
| CBR-2591-1 202606 | 2026-06-29. Service bulletin. The purpose of this CBR it to provide release notes for the recent Engine ECU software. |
| CBR-2586-1 202606 | 2026-06-29. Service bulletin. The purpose of this CBR is to address issues of exhaust stack rotation on version 4 products. |
| CBR 2465-6 202605 | 2026-06-02. Service bulletin. CBR to diagnosis issues with the Proactive Engine Restart system and Hood Open message. |
| M0039 032026 | 2026-04-02. Emissions. Emissions - EC0039 MST21 Failure to Detect P20EE - AN, CHU. |