Mack Trucks: Rear Brake Modulators May Short Circuit (service Brakes, Air)

Recall Summary Mack Trucks is recalling certain 2025-2027 Pioneer and 2026-2027 Anthem vehicles because the rear brake modulators may have unprotected electrical connectors that can short circuit, disabling the anti-lock brake system and electronic stability control. This loss of braking functions increases the risk of crashes or injuries. Dealers will inspect the connectors, install protective covers, and replace the modulators if needed at no cost.

Recalling firm

Mack Trucks, Inc.

Product

Component: SERVICE BRAKES, AIR. 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).

Reason

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 are expected to be mailed June 22, 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.

Classification

Class I

Category

vehicle recall

Country

United States

Agency

National Highway Traffic Safety Administration

Recall date

2026-04-23

Status

Ongoing

Distribution

Nationwide

Official recall notice from National Highway Traffic Safety Administration

Recall details on Nibble Recalls: https://trynibble.app/recalls/225db415-f1b8-4263-8205-c1261277616b