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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
CBR 2441-8 2026 2026042026-05-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. CBR - Key Fob Calibration and/or Replacement.
CBR 2570-1 0320262026-04-02. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. CBR - EBS - Electro-Pneumatic Module - Signal Compare Failure DTC C109562 - AN (4) - PR.
CBR 2565-1 0320262026-04-02. Service bulletin. ELECTRICAL SYSTEM. CBR - Trailer, 12Volt Right/Left Direction Indicator Circuit Warning - AN (4) - PR.
CBR 2712-7 0320262026-04-02. Service bulletin. ELECTRICAL SYSTEM; UNKNOWN OR OTHER. CBR - No Start Condition After Over the Air Programing.
CBR 2514 0220262026-03-03. Service bulletin. ELECTRICAL SYSTEM. CBR - This procedure provides a temporary corrective action for the “Lost Communication to Alternator” message and Vehicle Master Control Unit (VMCU) DTC C103508 caused by a software issue.
CBR 2545-1 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - U114688 VMCU Communication Fault - AN (4) - PR (4).
CBR 2516-6 2026012026-02-03. Service bulletin. VEHICLE SPEED CONTROL; ELECTRICAL SYSTEM. CBR - CMS Black Screen Troubleshooting - PR (4) - AN (4).
CBR 2502-2 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Mack Chassis - Battery Sensor Diagnostic and Calibration Procedure - PR (4) - AN (4).
CBR 2496-9 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - The purpose of this CBR is outline the interim software solution for PR(4) and AN(4).
CBR 2443-3 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM; SERVICE BRAKES. CBR - Trailer Tandem Adjustment Procedure - PR (4) - AN (4).
CBR 2408-16 2026012026-02-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Air Production Modulator (APM) DTC C10129B - High/Excessive Flow - PR (4).
CBR 2542 2025122026-01-06. Service bulletin. ELECTRICAL SYSTEM. This document provides mandatory interim parameter settings to ensure proper vehicle operation.
CBR 2526 2025122026-01-05. Service bulletin. ELECTRICAL SYSTEM. The purpose of this CBR is to address driver complaint of parking heater inoperative.
CBR 2527-1 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Center Chassis Input Output Module(CCIOM) Fault Code U3000-94 - PR(4)
CBR 2526-4 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM; ENGINE. CBR - Parking Heater Inoperative - PR(4) - AN (4).
CBR 2521-1 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Xantrex Inverter Sub-hardware Mismatch.
CBR 2514-2 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Lost Communication to Alternator Message - DTC C103508.
CBR 2496-5 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Mack Chassis - PR (4) - AN (4) - B2_T2_2.0.
CBR 2467-5 2025112025-12-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Service Required Message PR(4), AN(4).
CBR 2408-15 2025112025-12-03. Service bulletin. ENGINE; ELECTRICAL SYSTEM. CBR - Air Production Modulator (APM) DTC C10129B - High/Excessive Flow PR(4).
CBR 2480-72025-11-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Resolution Process for Locked Control Unit(s)
CBR 2516-3 1020252025-11-03. Service bulletin. ELECTRICAL SYSTEM; VISIBILITY/WIPER; VEHICLE SPEED CONTROL. CBR - CMS Black Screen Troubleshooting.
CBR 2514-1 1020252025-11-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Lost Communication to Alternator Message.
CBR 2511-1 1020252025-11-03. Service bulletin. ELECTRICAL SYSTEM. CBR - Inverter Low/No Power Shutoff Bypass
CBR 2505 0920252025-10-01. Service bulletin. ELECTRICAL SYSTEM. The purpose of this CBR is to address the issue with Eco Roll disable switch notworking.

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