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VEHICLE RECALLMODERATE
Mack Pioneer and Anthem Rear Brake Modulator
Mack is recalling 2025–2027 Pioneer and 2026–2027 Anthem trucks over rear brake modulator short-circuit risk affecting ABS and stability control.
What to do
Contact Mack Trucks immediately to schedule service. Do not operate the vehicle until the rear brake modulator connectors have been inspected and repaired by an authorized dealer.
Why it was recalled
A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.
Other recent recalls from Mack Trucks, Inc.
Editorial summary by Recall Canary · last updated 2026-04-29 · primary source: U.S. National Highway Traffic Safety Administration · severity reflects the agency's published classification