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NHTSA Campaign 26V261000

SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE

Issued by Mack Trucks, Inc. · Reported Apr 23, 2026 · 2,354 vehicles affected

What's wrong

Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-2027 Anthem (4) vehicles. The rear brake modulators may have unprotected electrical connectors that can short circuit and lead to a loss of the anti-lock brake system (ABS) and electronic stability control (ESC).

Consequence

A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.

Remedy

Dealers will inspect the rear brake modulator electrical connectors, install a protective cover, and replace the rear brake modulators, as necessary, free of charge. Owner notification letters were mailed June 8, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0494. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning April 30, 2026.

Vehicles affected by this recall

Make Model Year Units
MACK ANTHEM AN (4) 2026 2,354
MACK ANTHEM AN (4) 2027 2,354
MACK PIONEER PR (4) 2025 2,354
MACK PIONEER PR (4) 2026 2,354
MACK PIONEER PR (4) 2027 2,354

Source: NHTSA Campaign 26V261000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.