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Network/ United States/ Mack/ 25V026000

Mack · United States · High

Mack Pinnacle (Pi/Pn), Pioneer PR (4): Service brakes — reservoir/tank

Affects Mack Pinnacle (Pi/Pn), Pioneer PR (4) · 2024–2025 — about 21 vehicles.

The hazard

Insufficient air volume can reduce braking performance and increase the risk of a crash.

What to do

Dealers will install the correct volume air tanks, free of charge. Owner notification letters were mailed February 10, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0473.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational