Service bulletins for the 2026 Mack Pioneer
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.
100 on file from NHTSA, as of 2026-10-19.
By type
By component
By trouble code
By topic
Only bulletins with component: Fuel system are shown. Show all
| CBR 2598 202608 | 2026-09-01. Service bulletin. FUEL/PROPULSION SYSTEM. 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. |
|---|---|
| GDC25-007 092025 | 2025-09-29. Service bulletin. FUEL/PROPULSION SYSTEM. Reductant Injection Valve Control Bank 1 Unit 1 - Circuit Open |
| GDC25-004 092025 | 2025-09-29. Service bulletin. FUEL/PROPULSION SYSTEM. Reductant Pressure Sensor - Circuit Open |
| GDC25-003 092025 | 2025-09-29. Service bulletin. FUEL/PROPULSION SYSTEM. Reductant Return: No Flow Detected |
| GDC25-002 092025 | 2025-09-29. Service bulletin. FUEL/PROPULSION SYSTEM. Low Fuel Pressure |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.