# Service bulletin CBR 2573\-1 202604

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: 11032092
- Published by NHTSA: 2026\-05\-05
- Manufacturer's number: CBR 2573\-1 202604
- Manufacturer's date: 2026\-04\-09
- NHTSA component: POWER TRAIN

## NHTSA's summary

CBR \- Mack Chassis \- Through Shaft Bearing Retainer Breakage On Mack Carriers.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11032092-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11032092-9999.pdf)

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

## Components

Transmission and driveline

## Vehicles listed

- 2016 to 2017 MACK ANTHEM \(AN\)
- 2018 to 2027 MACK ANTHEM \(AN\)
- 2026 to 2027 MACK ANTHEM AN \(4\)
- 2002 to 2005 MACK CH
- 2006 to 2007 MACK CH
- 2002 to 2008 MACK CHN
- 2006 to 2018 MACK CHU
- 2002 to 2008 MACK CL
- 2004 to 2008 MACK CT
- 2002 MACK CV
- 2004 to 2008 MACK CV
- 2002 to 2007 MACK CX
- 2006 to 2018 MACK CXU
- 2019 to 2027 MACK GRANITE \(GR\)
- 2007 to 2016 MACK GRANITE \(GU\)
- 2017 to 2019 MACK GRANITE \(GU\)
- 2026 to 2027 MACK GRANITE GR \(4\)
- 2002 to 2007 MACK LE
- 2007 to 2017 MACK LEU
- 2015 to 2027 MACK LR
- 2019 to 2027 MACK LRBE \(ELECTRIC\)
- 2020 to 2027 MACK MD
- 2024 to 2027 MACK MD \(ELECTRIC\)
- 2003 to 2007 MACK MR
- 2007 to 2018 MACK MRU
- 2016 MACK PINNACLE \(PI/PN\)
- 2017 to 2027 MACK PINNACLE \(PI/PN\)
- 2025 to 2027 MACK PIONEER PR \(4\)
- 2002 to 2005 MACK RB
- 2002 to 2005 MACK RD
- 2007 to 2019 MACK TD
- 2017 to 2027 MACK TERRAPRO \(TE\)

## Recalls for the same vehicles and component

- [2026108](/recalls/tc/2026108.md), 2026-03-11: Powertrain
- [24V424000](/recalls/nhtsa/24V424000.md), 2024-06-09: POWER TRAIN:AXLE ASSEMBLY; STEERING:LINKAGES:TIE ROD ASSEMBLY
- [19V047000](/recalls/nhtsa/19V047000.md), 2019-01-21: POWER TRAIN:CLUTCH ASSEMBLY
- [2016495](/recalls/tc/2016495.md), 2016-10-11: Powertrain
- [16V099000](/recalls/nhtsa/16V099000.md), 2016-02-19: POWER TRAIN:DRIVELINE:DRIVESHAFT
- [10V069000](/recalls/nhtsa/10V069000.md), 2010-03-03: POWER TRAIN:AXLE ASSEMBLY
- [09V240000](/recalls/nhtsa/09V240000.md), 2009-06-30: POWER TRAIN:AXLE ASSEMBLY
- [07V123000](/recalls/nhtsa/07V123000.md), 2007-03-21: POWER TRAIN:AXLE ASSEMBLY
- [05V454000](/recalls/nhtsa/05V454000.md), 2005-10-04: POWER TRAIN:AXLE ASSEMBLY
- [05V313000](/recalls/nhtsa/05V313000.md), 2005-07-07: POWER TRAIN:AXLE ASSEMBLY

## 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.
- [GDC26\-001 202604](/bulletins/11032095.md), 2026-05-05, Over\-the\-air update: POWER TRAIN. GDC \- Transmission Oil Level Sensor
- [CBR 2362\-3 202604](/bulletins/11032086.md), 2026-05-04, Service bulletin: POWER TRAIN. CBR \- Mack Carrier Nut Adhesive Change.
- [TSB M\-432\-002A 032026](/bulletins/11030591.md), 2026-04-02, Service bulletin: POWER TRAIN. TSB \- Cable, Gear Selector, Replacement
- [CBR 2218\-6 032026](/bulletins/11030582.md), 2026-04-02, Service bulletin: POWER TRAIN. CBR \- Parker F3 Hydraulic Pump Troubleshooting.
- [S4579 092025](/bulletins/11023461.md), 2025-10-01, Service campaign: UNKNOWN OR OTHER; POWER TRAIN. Mack Trucks has identified that certain truck models may have been assembled with incorrect center bearing mounting hardware and could have been torqued incorrectly. Improper torque can increase the risk of hardware failure. To address this issue, please follow the instructions in this document to replace and correctly torque the center bearing and center bearing mounting bracket hardware.
- [S4574 072025](/bulletins/11021342.md), 2025-08-04, Service campaign: POWER TRAIN. SC \- Mack Trucks has identified that certain truck models may have been assembled with incorrectly torqued interaxle prop shaft U\-joint hardware.
- [CBR 2482 072025](/bulletins/11021330.md), 2025-08-04, Service bulletin: POWER TRAIN. CBR \- Purpose of this CBR is to address Pop up message for PTO Malfunction when there is not PTO Installed.
- [S4558 202506](/bulletins/11020159.md), 2025-07-03, Service campaign: POWER TRAIN. 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](/bulletins/11019946.md), 2025-07-01, Service bulletin: POWER TRAIN. CBR \- This bulletin provides guidance for identifying and addressing oil intrusion related to the Countershaft Brake \(CSB\) in AMT\-G transmissions.

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