Antilock: control unit/moduleRecall 26V-261 · Mack vehicles
Mack Trucks, Inc. recall 26V-261 covers 2,772 Mack vehicles for a antilock: control unit/module problem, reported to NHTSA on April 23, 2026. The manufacturer's latest report (2026 Q3) shows 60% of affected vehicles repaired.
Source: NHTSA recall 26V261000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
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).
The risk
A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.
The fix
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.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
60%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.
Vehicles in this recall
Built from October 22, 2024 to April 21, 2026. Not every vehicle in these model years is included; check by VIN.