# Mack Trucks, Inc.: Rear Brake Modulators May Short Circuit (26V261000)

**Recall Urgency Score:** 35/100

| Field | Value |
|---|---|
| Manufacturer | Mack Trucks, Inc. |
| Subject | Rear Brake Modulators May Short Circuit |
| NHTSA ID | 26V261000 |
| Manufacturer campaign | SC0494 |
| Recall type | Vehicle |
| Component | SERVICE BRAKES, AIR |
| Units potentially affected | 2772 |
| Do not drive | No |
| Park outside | No |
| Defect | 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). |
| Consequence | 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 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. |

## Why this score
- Safety-critical component (service brakes).
- 2,772 units affected.

Source: U.S. National Highway Traffic Safety Administration (NHTSA) recalls, via data.transportation.gov (https://www.nhtsa.gov/recalls?nhtsaId=26V261000). Last refreshed: 2026-11-03T18:08:10.172Z.
Recall data comes from NHTSA and is summarized automatically; check the official notice and VIN lookup before acting. Informational only.