Service bulletin CBR-343 202408
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 | 11006923 |
| Published by NHTSA | 2024-09-04 |
| Manufacturer's number | CBR-343 202408 |
| Manufacturer's date | 2024-08-28 |
| NHTSA component | POWER TRAIN |
NHTSA's summary
CBR: Mack chassis with an mDRIVE transmission, there have been reports of complete shift assemblies and TECUs being replaced due to technicians being unable to pinpoint the source of the air leak.
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
Transmission and driveline
| MACK ANTHEM (AN) | 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 (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) | 2007 to 2016 |
| MACK GRANITE (GU) | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| MACK PINNACLE (PI/PN) | 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 | 2015 to 2018 |
| MACK TERRAPRO (TE) | 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.
| 2026108 | 2026-03-11. Powertrain |
|---|---|
| 24V424000 | 2024-06-09. POWER TRAIN:AXLE ASSEMBLY; STEERING:LINKAGES:TIE ROD ASSEMBLY |
| 19V047000 | 2019-01-21. POWER TRAIN:CLUTCH ASSEMBLY |
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. |
|---|---|
| GDC26-001 202604 | 2026-05-05. Over-the-air update. GDC - Transmission Oil Level Sensor |
| CBR 2573-1 202604 | 2026-05-05. Service bulletin. CBR - Mack Chassis - Through Shaft Bearing Retainer Breakage On Mack Carriers. |
| CBR 2362-3 202604 | 2026-05-04. Service bulletin. CBR - Mack Carrier Nut Adhesive Change. |
| CBR 2218-6 032026 | 2026-04-02. Service bulletin. CBR - Parker F3 Hydraulic Pump Troubleshooting. |
| CBR 2482 072025 | 2025-08-04. Service bulletin. CBR - Purpose of this CBR is to address Pop up message for PTO Malfunction when there is not PTO Installed. |
| S4558 202506 | 2025-07-03. Service campaign. Mack trucks has determined that certain model year 2021-2024 PI models built with 4.19 rear axle ratios could experience elevated axle oil temps under high road speeds. To correct this issue the 4.19 ratio carriers need to be swapped to 3.79 ratio carriers. Follow the instructions below to replace both carriers with new ones. |
| CBR 2474-1 202506 | 2025-07-01. Service bulletin. CBR - This bulletin provides guidance for identifying and addressing oil intrusion related to the Countershaft Brake (CSB) in AMT-G transmissions. |
| CBR 2464-1 202505 | 2025-06-02. Service bulletin. Mack Chassis - Rear Axle Overheat |
| S4088 202409 | 2024-10-04. Service campaign. Service Campaign: Interaxle Driveline Torque |