# Service bulletin CBR 820\-9 202601

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: 11028051
- Published by NHTSA: 2026\-02\-03
- Manufacturer's number: CBR 820\-9 202601
- Manufacturer's date: 2026\-01\-08
- NHTSA component: ENGINE; VEHICLE SPEED CONTROL

## NHTSA's summary

CBR \- Mack Chassis \- Engine Brake Only Works With The Brake Pedal, No Function During Cruise. US07 And Newer Emissions, Model Year 2008 And Newer.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028051-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2026/MC-11028051-9999.pdf)

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

## Components

Engine, Throttle and cruise control

## Vehicles listed

- 2016 to 2017 MACK ANTHEM \(AN\)
- 2018 to 2019 MACK ANTHEM \(AN\)
- 2008 MACK CHN
- 2008 to 2018 MACK CHU
- 2008 MACK CL
- 2008 MACK CT
- 2008 MACK CV
- 2008 to 2018 MACK CXU
- 2019 MACK GRANITE \(GR\)
- 2008 to 2016 MACK GRANITE \(GU\)
- 2017 to 2019 MACK GRANITE \(GU\)
- 2008 to 2017 MACK LEU
- 2015 to 2019 MACK LR
- 2019 MACK LRBE \(ELECTRIC\)
- 2008 to 2018 MACK MRU
- 2016 MACK PINNACLE \(PI/PN\)
- 2017 to 2019 MACK PINNACLE \(PI/PN\)
- 2008 to 2019 MACK TD
- 2017 to 2019 MACK TERRAPRO \(TE\)

## Recalls for the same vehicles and component

- [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

- [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 \(SCR\).
- [M0039 032026](/bulletins/11030590.md), 2026-04-02, Emissions: ENGINE. Emissions \- EC0039 MST21 Failure to Detect P20EE \- AN, CHU.
- [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 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\(4\)\).
- [CBR 199 202512](/bulletins/11027007.md), 2026-01-05, Service bulletin: ENGINE. Vehicles affected by this issue will show coolant runoff on the front rights side of the engine.
- [CBR 2171\-11 202511](/bulletins/11026025.md), 2025-12-03, Service bulletin: ENGINE; ELECTRICAL SYSTEM. CBR \- Mack Temperature Sensor Troubleshooting Guide
- [CBR 199\-6 202511](/bulletins/11026021.md), 2025-12-03, Service bulletin: ENGINE. CBR \- 13 Liter Engines ONLY \- Engine Coolant Pump Housing Leak; Coolant Found Around The Oil Cooler Duct Cover Or In Between The Coolant Pump Housing And Oil Cooler Housing.
- [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 170\-8 202505](/bulletins/11018804.md), 2025-06-02, Service bulletin: ENGINE. Inactive Code P25AE00 Being Generated After A Hard Pull And A Momentary Drop In Engine Oil Pressure \(Low Oil Pressure\) \(Possible Related Codes \- SPN4811 , SPN 100 , PID 100\)
- [M0350 202504](/bulletins/11017732.md), 2025-05-05, Emissions: ENGINE. ER \- Mack Trucks has identified that the Selective Catalyst Reduction \(SCR\) system in certain vehicles equipped with the MY 2017 or 2018 MP8 VGT and Turbo Compound \(TC\) engines are not meeting California and EPA emissions standards, or Mack cannot confirm its compliance.

JSON: [/v1/bulletins/11028051](/v1/bulletins/11028051)

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