Service bulletin CBR 2598 202608
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 | 11036588 |
| Published by NHTSA | 2026-09-01 |
| Manufacturer's number | CBR 2598 202608 |
| Manufacturer's date | 2026-08-24 |
| NHTSA component | FUEL/PROPULSION SYSTEM |
NHTSA's summary
The purpose of this CBR is to provide steps on how to utilize the injector widget (within workshop toolbox) to aid with injection system issues.
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
Fuel system
| MACK ANTHEM AN (4) | 2026, 2027 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| MACK PIONEER PR (4) | 2026, 2027 (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.
| GDC25-007 092025 | 2025-09-29. Service bulletin. Reductant Injection Valve Control Bank 1 Unit 1 - Circuit Open |
|---|---|
| GDC25-004 092025 | 2025-09-29. Service bulletin. Reductant Pressure Sensor - Circuit Open |
| GDC25-003 092025 | 2025-09-29. Service bulletin. Reductant Return: No Flow Detected |
| GDC25-002 092025 | 2025-09-29. Service bulletin. Low Fuel Pressure |
| CBR 2107-21 202505 | 2025-06-02. Service bulletin. Mack DEF Level (UQLS) Sensor Troubleshooting Guide - US17+OBD16 Emissions and Newer |