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Service bulletins for the 2027 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.

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

By type

By component

By trouble code

By topic

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

Bulletins, newest first
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
CBR 2441-8 2026 2026042026-05-04. Service bulletin. UNKNOWN OR OTHER; ELECTRICAL SYSTEM. CBR - Key Fob Calibration and/or Replacement.
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.

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