Service bulletin S7601
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 | 10201721 |
| Published by NHTSA | 2021-10-01 |
| Manufacturer's number | S7601 |
| Manufacturer's date | 2021-09-24 |
| NHTSA component | ENGINE AND ENGINE COOLING |
NHTSA's summary
Exhaust Stack Height Change with Aero
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) | 2021 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| MACK PINNACLE (PI/PN) | 2021 (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.
| 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 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) |
| CBR-2449 202503 | 2025-04-02. Service bulletin. Cummins Exhaust Aftertreatment System (EATS) catalysts may experience cracking, which may be attributed to excessive vertical vibration in the exhaust stack. To mitigate this issue, a modification to the exhaust stack length is required. |
| CBR-561 202503 | 2025-04-02. Service bulletin. If oil dilution is suspected refer to the applicable CBR solution below: ∙ CBR-659Mack Chassis - Oil Diluted With Fuel; Fuel In Oil, Diagnostic Information - All Emissions, All Model Years |
| CBR-997 202411 | 2024-12-02. Service bulletin. Vehicles may present with oil leak coming from the clutch/flywheel housing and observation of burned clutch smell or clutch slipping. These symptoms can be mistaken as a crankshaft rear main seal leak, when the actual cause is the crankshaft adaptor O-ring. |