# Service bulletin CBR\-2326 202312

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: 10248105
- Published by NHTSA: 2024\-01\-03
- Manufacturer's number: CBR\-2326 202312
- Manufacturer's date: 2023\-12\-01
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING

## NHTSA's summary

CBR: The purpose of this solution is to give information on Engine Control Module \(EMS\) Software content. This document lists issues or problems \(DTCs, Fault Codes\) mitigated or resolved in specific EMS software.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2023/MC-10248105-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2023/MC-10248105-9999.pdf)

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

## Components

Electrical system, Engine

## Vehicles listed

- 2024 MACK ANTHEM \(AN\)
- 2024 MACK GRANITE \(GR\)
- 2024 MACK GRANITE \(GU\)
- 2024 MACK LR
- 2024 MACK PINNACLE \(PI/PN\)
- 2024 MACK TERRAPRO \(MRU\)
- 2024 MACK TERRAPRO \(TE\)

## Recalls for the same vehicles and component

- [26V139000](/recalls/nhtsa/26V139000.md), 2026-03-11: ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE \(ECU/ECM\):SOFTWARE
- [24V792000](/recalls/nhtsa/24V792000.md), 2024-10-23: ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
- [2024194](/recalls/tc/2024194.md), 2024-03-27: Electrical
- [24V232000](/recalls/nhtsa/24V232000.md), 2024-03-27: ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS
- [2023630](/recalls/tc/2023630.md), 2023-11-22: Electrical
- [2023588](/recalls/tc/2023588.md), 2023-10-31: Engine
- [23V731000](/recalls/nhtsa/23V731000.md), 2023-10-31: ENGINE
- [23V310000](/recalls/nhtsa/23V310000.md), 2023-05-02: ELECTRICAL SYSTEM:HORN

## 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.
- [CBR 159 202608](/bulletins/11036580.md), 2026-09-01, Service bulletin: ELECTRICAL SYSTEM. Mack Trucks Equipped With A Cummins Engine \- Engine Preheat Icon Does Not Illuminate In The Instrument Cluster \(IC\) During Engine Pre\-heat \(Intake Air Heater\) Operation \- Vehicles With 2018Instrument Cluster Update, Model Year2018 And Newer
- [CBR\-2592\-1 202606](/bulletins/11034135.md), 2026-06-29, Service bulletin: ENGINE. 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 2712\-7 032026](/bulletins/11030579.md), 2026-04-02, Service bulletin: ELECTRICAL SYSTEM; UNKNOWN OR OTHER. CBR \- No Start Condition After Over the Air Programing.
- [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 2495\-4 202511](/bulletins/11026031.md), 2025-12-03, Service bulletin: ELECTRICAL SYSTEM. CBR \- Carb 24 Phase 1 \- 48V Diagnostics Guide.
- [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 2495 092025](/bulletins/11023450.md), 2025-10-01, Service bulletin: ELECTRICAL SYSTEM; ENGINE. The purpose of the 48V EATS heater system is to provide additional heat to the exhaust stream allowing the EATS to become active earlier during acold start and during engine operation that produces low exhaust gas temperatures.

JSON: [/v1/bulletins/10248105](/v1/bulletins/10248105)

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