Service bulletin S3904 202403
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 | 10252315 |
| Published by NHTSA | 2024-04-02 |
| Manufacturer's number | S3904 202403 |
| Manufacturer's date | 2024-03-01 |
| NHTSA component | ENGINE AND ENGINE COOLING |
NHTSA's summary
Service Campaign: Mack trucks has determined that certain AN, GR, PI, and TE model trucks built with a MP8 engine could experience a reduced clamping load on the turbocharger mounting hardware causing the hardware to become loose. On affected vehicles follow the instructions below to remove the turbocharger and replace the mounting hardware and mounting gasket with new parts.
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
Engine
| MACK ANTHEM (AN) | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| MACK GRANITE (GR) | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MACK GRANITE (GU) | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MACK PINNACLE (PI/PN) | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MACK TERRAPRO (MRU) | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| MACK TERRAPRO (TE) | 2023, 2024 (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.
| 26V139000 | 2026-03-11. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE |
|---|---|
| 2023588 | 2023-10-31. Engine |
| 23V731000 | 2023-10-31. ENGINE |
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. |
|---|---|
| CBR-2592-1 202606 | 2026-06-29. Service bulletin. 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. |
| M0039 032026 | 2026-04-02. Emissions. Emissions - EC0039 MST21 Failure to Detect P20EE - AN, CHU. |
| 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 2495 092025 | 2025-10-01. Service bulletin. 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. |
| CBR 2107-21 202505 | 2025-06-02. Service bulletin. Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer |
| CBR 170-8 202505 | 2025-06-02. Service bulletin. 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) |