Service bulletin KC-2128
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 | 10233502 |
| Published by NHTSA | 2023-04-04 |
| Manufacturer's number | KC-2128 |
| Manufacturer's date | 2023-03-14 |
| NHTSA component | ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL; ELECTRICAL SYSTEM |
NHTSA's summary
Engine Control Module (EMS) Software Information - Improvement List (Change Log), March 2023 – US21+OBD2021 Emissions ONLY
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
Electrical system, Engine, Exhaust and emissions
| MACK ANTHEM (AN) | 2021 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| MACK GRANITE (GR) | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| MACK LR | 2021 |
| MACK PINNACLE (PI/PN) | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| MACK TE | 2021 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 24V792000 | 2024-10-23. ELECTRICAL SYSTEM:SOFTWARE; SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE |
|---|
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| CBR 159 202608 | 2026-09-01. Service bulletin. 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 |
|---|---|
| M0039 032026 | 2026-04-02. Emissions. Emissions - EC0039 MST21 Failure to Detect P20EE - AN, CHU. |
| CBR 2712-7 032026 | 2026-04-02. Service bulletin. CBR - No Start Condition After Over the Air Programing. |
| CBR 2107-22 202601 | 2026-02-02. Service bulletin. 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 | 2026-01-05. Service bulletin. Vehicles affected by this issue will show coolant runoff on the front rights side of the engine. |
| CBR 2171-11 202511 | 2025-12-03. Service bulletin. CBR - Mack Temperature Sensor Troubleshooting Guide |
| CBR 199-6 202511 | 2025-12-03. Service bulletin. 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 2172-5 082025 | 2025-09-02. Service bulletin. CBR - When an OTA (Over-The-Air) job starts to program the VECU blocks the starter relay out, if the job ends in a Critical failure, the vehicle will remain in Safe State. |
| CBR 407 072025 | 2025-08-04. Service bulletin. CBR - To correct the MID136 SID 66 FMI 7 fault code the latest Bendix VCP file will need to downloaded. |
| CBR 2488 072025 | 2025-08-04. Service bulletin. CBR - A significant GPS reporting issue is affecting fleet operations, with trucks maintaining back-office communication but failing to transmit GPS location data. |