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: Body and frame are shown. Show all
| CBR 2429 202608 | 2026-09-01. 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. |
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| CBR 2540-7 202604 | 2026-05-05. Service bulletin. SEAT BELTS; STRUCTURE:BODY; UNKNOWN OR OTHER. CBR - Upper Bunk Restraint System – Plastic Gable Retention Field Fix. |
| S4808 032026 | 2026-04-02. Service campaign. STRUCTURE:BODY. SC - Certain model PR’s could experience grille surround trim detaching due to insufficient retention. |
| CBR 2540-5 202601 | 2026-02-03. Service bulletin. UNKNOWN OR OTHER; STRUCTURE:BODY. CBR - Upper Bunk Restraint System – Plastic Gable Retention Field Fix. |
| CBR 2540 202512 | 2026-01-06. Service bulletin. STRUCTURE:BODY; UNKNOWN OR OTHER. Upper Bunk Restraint System – Plastic Gable Retention Field Fix |
| CBR 2500 092025 | 2025-10-01. Service bulletin. STRUCTURE:BODY; UNKNOWN OR OTHER. This procedure describes the standardized method for repairing failed inserts pulled out of a table surface. It applies only when the receiving hole is not significantly damaged. Acceptable conditions include surface fraying or peeling at the painted layer only, with no full-depth cracking. |
The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.