Recall 26V261000: 2026–2027 Mack Anthem AN (4), 2025–2027 Mack Pioneer PR (4)

Updated from NHTSA data · How we count

Report date
Apr 23, 2026
Vehicles affected
2,772
Models
2
Initiated by
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.

Affected vehicles

Details

NHTSA campaign
26V261000
Manufacturer campaign
SC0494
Manufacturer
Mack Trucks, Inc.
Owner letters
Jun 8, 2026
Components
Service brakes, air:antilock:control unit/module (Brakes)

Recall repairs are free at authorized dealers. To see if your vehicle is included, enter your VIN at NHTSA.gov or call the manufacturer.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) Office of Defects Investigation public data. Complaints are submitted by owners and are not verified by NHTSA or by us; a complaint does not prove a defect exists. Methodology