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).
Compare the exact product and every lot, model, serial range or date listed in the official notice. A similar name alone does not establish that your product is included.
Identifiers in this source record
2027 MACK PIONEER PR (4)Manufacturer campaign: SC0494Part: 247101042025 MACK PIONEER PR (4)2026 MACK PIONEER PR (4)2026 MACK ANTHEM AN (4)2027 MACK ANTHEM AN (4)Vehicle: VIN plus the year, make and model. Car seat or equipment: Manufacturer, model and production date from the label. Tire: Brand, tire line, size and DOT tire identification number.
Read the vehicles identification guideWhy this notice was issued
A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.
Official action
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.
Follow the specific instructions and use the contact details in the announcement if you need help confirming a match or arranging the remedy.
Read the full official instructionsProduct & source details
- Product
- 2027 MACK PIONEER PR (4)
- Brand or manufacturer
- MACK
- Source
- NHTSA
- Notice type
- Recall
- Source reference
- 26V261000
- Category
- Vehicles & road safety