NHTSA recall 26V261000 · Apr 23, 2026
Mack Trucks, Inc.: Rear Brake Modulators May Short Circuit
Product
2025-2027 Pioneer (4) and 2026-2027 Anthem (4) vehicles
Hazard
A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.
What to do
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.
Got a car, truck or motorcycle? The surest check is your 17-character VIN, which is on your registration, insurance card, or the driver-side dashboard. NHTSA's free lookup shows any open recall that hasn't been repaired on that exact vehicle.
Check my VIN on NHTSA.govRecall details
- Summary
- 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).
- Component
- SERVICE BRAKES, AIR
- Recall type
- Vehicle
- Potentially affected
- 2,772
- Manufacturer campaign number
- SC0494
Source: National Highway Traffic Safety Administration (NHTSA) notice.
Copied from the agency record without changes. Data as of Oct 14, 2026, 1:15 AM EDT. The agency notice is the final word.
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