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Service bulletins for the 2025 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.

155 on file from NHTSA, as of 2026-10-19.

By type

By component

By trouble code

Only bulletins with component: Electrical system are shown. Show all

Bulletins, newest first
TSB M-371-005A 2026092026-10-02. Service bulletin. ELECTRICAL SYSTEM. Jumper Harness Repair for Version 4 Mack Trucks
TSB M-373-003 2026092026-10-02. Service bulletin. ELECTRICAL SYSTEM. Power Cable Alternator Replacement
CBR 2590-3 2026092026-10-02. Service bulletin. ELECTRICAL SYSTEM. Instrument Cluster Going Dark
CBR 2496-18 2026092026-10-02. Service bulletin. ELECTRICAL SYSTEM. The purpose of this CBR is outline the interim software solution for PR(4) and AN(4).
CBR 2483-6 2026092026-10-01. Service bulletin. ELECTRICAL SYSTEM. Diagnostic instructions for CAN network communication issues.
CBR 2596 2026082026-09-01. Service bulletin. ENGINE; ELECTRICAL SYSTEM. The purpose of this CBR is to provide steps on how to correct a customer complaint of a no crank/engine start condition.
CBR 2429 2026082026-09-01. Service bulletin. STRUCTURE:BODY; ELECTRICAL SYSTEM. This CBR solution outlines the procedures for diagnosing, replacing, calibrating, and programming Flexible Switch Panels and the Security and Cab Interface Module (SCIM) to resolve switch malfunction notifications and associated fault codes.
CBR 2585-3 0720262026-08-03. Service bulletin. ELECTRICAL SYSTEM. CBR - The purpose of this CBR is to provide support for fault codes C106718 and/or C106818.
CBR-2590-2 2026062026-06-29. Service bulletin. ELECTRICAL SYSTEM. The purpose of this CBR is to provide steps on how to correct a customer complaint of instrument cluster going dark (blackout) situation.
CBR-2588-2 2026062026-06-29. Service bulletin. ELECTRICAL SYSTEM. The purpose of this CBR is to provide aid in VMCU fault B1524-49 along with a Rain sensor which will not calibrate.
CBR-2587-2 2026062026-06-29. Service bulletin. ELECTRICAL SYSTEM. The purpose of this cbr is to provide steps on how to protect the alternator power cable connection from corrosion.
CBR-2568-5 2026062026-06-29. Service bulletin. ELECTRICAL SYSTEM. Contact Workshop; Communication Lost With Ultracapacitor Message With Associated CCIOM DTC U100687 And A Startability Issue.
CBR-2496-16 2026062026-06-29. Service bulletin. ELECTRICAL SYSTEM. The purpose of this CBR is outline the interim software solution for PR(4) and AN(4).
CBR-2465-7 2026062026-06-29. Service bulletin. ELECTRICAL SYSTEM. The purpose of this CBR is to help diagnosis issues with the Proactive Engine Restart system and Hood Open popup message.
GDC26-02 2026052026-06-02. Service bulletin. ELECTRICAL SYSTEM; SEAT BELTS; AIR BAGS. Fault diagnostic information for Supplemental Restraint / Airbag Inflation System (SRS)
CBR 2587-1 2026052026-06-02. Service bulletin. ELECTRICAL SYSTEM. CBR to provide steps on how to protect the alternator power cable connection from corrosion.
CBR 2585-1 2026052026-06-02. Service bulletin. ELECTRICAL SYSTEM; WHEELS; SERVICE BRAKES. CBR to provide support for fault codes C106718 and/or C106818.
CBR 2584-4 2026052026-06-02. Service bulletin. SUSPENSION; ELECTRICAL SYSTEM. Electronically controlled suspension (ECS) calibration procedure.
CBR 2583-1 2026052026-06-02. Service bulletin. ELECTRICAL SYSTEM. Tire Pressure Monitoring System U101A / U101B Fault Solution
CBR 2502-7 2026052026-06-02. Service bulletin. ELECTRICAL SYSTEM. Mack Chassis - Battery Sensor Diagnostic, Calibration, and Configuration Procedure
CBR 2496-14 2026052026-06-02. Service bulletin. ELECTRICAL SYSTEM. CBR to address when you should update to 3.0 service pack software update.
CBR 2465-6 2026052026-06-02. Service bulletin. ELECTRICAL SYSTEM; ENGINE. CBR to diagnosis issues with the Proactive Engine Restart system and Hood Open message.
CBR 2456-6 2026052026-06-02. Service bulletin. ELECTRICAL SYSTEM. Infotainment Update for Missing Apps, Navigation, and Apple/Android CarPlay Issues
CBR 2568-3 2026042026-05-05. Service bulletin. ELECTRICAL SYSTEM. CBR - Communication Lost With Ultracapacitor Message With Associated CCIOM DTC U100687 and a Startability Issue.
CBR 2562-15 2026042026-05-05. Service bulletin. ELECTRICAL SYSTEM. CBR - Electric Pneumatic Module (EPM) Fault

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.