2025–2027 Mack Anthem AN (4), Mack Pioneer PR (4): Service Brakes, Air recall
NHTSA campaign 26V261000 · 2,772 units potentially affected · filed Apr 23, 2026
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).
Why it matters
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 details
- NHTSA campaign
- 26V261000
- Manufacturer no.
- SC0494
- Manufacturer
- Mack Trucks, Inc.
- Component
- SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
- Units affected
- 2,772
- Report received
- Apr 23, 2026
- Owner letters
- Jun 8, 2026
- Type
- Vehicle
Check whether your vehicle is included with the official NHTSA VIN lookup or your dealer. Repairs for safety recalls are free.
Vehicles covered
- Mack Anthem AN (4) 2026, 2027
- Mack Pioneer PR (4) 2025, 2026, 2027