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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: Engine are shown. Show all

Bulletins, newest first
CBR-2417 2024112024-11-27. Service bulletin. ENGINE. CBR - 11L Engine block compatibility and Backward Conversion Parts Requirements
CBR-2409 2024112024-11-27. Service bulletin. ENGINE. CBR - 13L Engine - Rear Main Oil Seal Leak Model Year 2025
CBR-2411 2024102024-11-04. Service bulletin. ENGINE. CBR - One-Box SCR Weld Leaks.
CBR-2409 2024102024-11-04. Service bulletin. ENGINE. CBR - 13L Engine - Rear Main Oil Seal Leak - Model Year 2025
CBR-2263 2024102024-11-04. Service bulletin. ENGINE. CBR - Mack Chassis - Timing Gear Plate Repair
CBR-561 2024082024-09-04. Service bulletin. ENGINE. CBR: 11L, 13L, And 16L Engine Oil Analysis Specifications - US10 And Newer Emissions
CBR-523 2024082024-09-04. Service bulletin. ENGINE. CBR: Overhead Wear Overview - Model Year2018 To Current (Common Rail Fuel System ONLY)
CBR-2214 2024072024-08-01. Service bulletin. ENGINE. CBR: Turbo Compound 2nd Generation - EGR And O r DPF Diagnostic Trouble Codes(DTC), Diagnostic And Repair Information
CBR-2214 2024042024-05-01. Service bulletin. ENGINE AND ENGINE COOLING. CBR: Turbo Compound 2nd Generation - EGR And / Or DPF Diagnostic Trouble Codes (DTC), Diagnostic And Repair Information.
CBR-2013 2024042024-05-01. Service bulletin. ENGINE AND ENGINE COOLING. CBR: Turbo Compound (TC) Hot Side Noise, Diagnostic Information.
CBR-2139 2024032024-04-02. Service bulletin. ENGINE AND ENGINE COOLING. CBR: Vehicles built with an 11 liter engine may experience a complaint of excessive fuel in the oil. It is possible that the source of the fuel is the rear fuel galley plug in the cylinder head.

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